PUBLICATIONS
last update: August 2021

CHRISTOPHER W CHURCHILL
PROFESSOR
DEPARTMENT OF ASTRONOMY
NEW MEXICO STATE UNIVERSITY



Submitted (under review)

02. Mathes, N.L., Churchill, C.W., & Murphy, M.T., submitted to ApJ
      The Vulture Survey I: Analyzing the Evolution of MgII Absorbers
      | ADS Abstract | arXiv:1701.05624 | Citations | References | Metrics |

01. Churchill, C.W., Klimek, E., Medina, A., & Vander Vliet, J.R., submitted to ApJ
      Ionization Modeling Astrophysical Gaseous Structures. I. The Optically Thin Regime
      | ADS Abstract | arXiv:1409.0916 | Citations | References | Metrics | Download the Code |

Refereed Journal Articles

2021

100. Hasan, F., Churchill, C.W., Stemock, B., Nielsen, N.M., Kacprzak, G.G., Croom, M., & Murphy, M.T. 2021, ApJ, accepted
      Evolution of CIV Absorbers. II. Where Does CIV Live?
      | ADS Abstract | arXiv:2108.04942 | Citations | References | Metrics |

99. Marra, R., Churchill, C.W., Doughty, C., Kacprzak, G.G., Charlton, J.C., Sameer, Nielsen, N.M., Ceverino, D., & Trujillo-Gomez, S. 2021, MNRAS, accepted
      Using Cosmological Simulations and Synthetic Absorption Spectra to Assess the Accuracy of Observationally Derived CGM Metallicities
      | ADS Abstract | arXiv:2108.03254 | Citations | References | Metrics |

98. Norris, J.M., Muzahid, S., Charlton, J.C., Kacprzak, G.G., Wakker, B., & Churchill, C.W., MNRAS, 506, 5640
      Discovery of Extremely Low-Metallicity Circumgalactic Gas at z=0.5 Toward Q0454-220
      | ADS Abstract | arXiv:2106.12972 | Citations | References | Metrics |

97. Marra, R., Churchill, C.W., Kacprzak, G.G., Vander Vliet, R., Ceverino, D., Lewis, J.G., Nielsen, N.M., Muzahic, S., & Charlton, J.C. 2021, ApJ, 907, 8
      Spatial Distribution of OVI Covering Fractions in the Simulated Circumgalactic Medium
      | ADS Abstract | arXiv:2012:00727 | Citations | References | Metrics |

96. Sameer, S.X., Charlton, J.C., Norris, J.M., Gebhardt, M., Churchill, C.W., Kacprzak, G.G., N.M., Muzahid, S., Narayanan, A., Nielsen, N.M.,
      Richter, P., & Wakker, B.P. 2021, MNRAS, 501, 2112
      Cloud-by-Cloud Multiphase Bayesian Modeling: Application to Four Weak, Low-Ionization Absorbers
      | ADS Abstract | arXiv:2012:00021 | Citations | References | Metrics |

95. Nateghi, H., Kacprzak, G.G., Nielsen, N.M., Muzahid, S., Churchill, C.W., Pointon, S.K., & Charlton, J.C. 2021, MNRAS, 500, 3987
      Discovery of a Dwarf Galaxy Around a Multi-Phase Extreme Metallicty Absorber Thought to Originate from a Massive Star-Forming Galaxy at z~0.4
      | ADS Abstract | arXiv:2011.06071 | Citations | References | Metrics |

94. Kacprzak, G.G., Nielsen, N.M., Nateghi, H., Churchill, C.W., Pointon, S.K., Nanayakkara, T., Muzhid, S., & Charlton, J.C. 2021, MNRAS, 500, 2289
      Evidence for Galaxy Quenching in a Green Valley Galaxy Caused by a Lack of a Circumgalactic Medium
      | ADS Abstract | arXiv:2011.02589 | Citations | References | Metrics |

2020

93. Nielsen, N.M. Kacprzak, G.G., Pointon, S.K., Murphy, M.T., Churchill, C.W., & Dave, R. 2020, ApJ, 904, 164
      The CGM at Cosmic Noon with KCWI: Outflows from Edge-On Galaxies at z=2.07
      | ADS Abstract | arXiv:2002.08516 | Citations | References | Metrics |

92. Hasan, F., Churchill, C.W., Stemock, B., Mathes, N., Nielsen, N.M., Finlator, K., Croom, M., Kacprzak, G.G., & Murphy, M.T. 2020, ApJ, 904, 44
      Evolution of CIV Absorbers. I. The Cosmic Incidence
      | ADS Abstract | arXiv:2007.11751 | Citations | References | Metrics |

91. Churchill, C.W., Evans, J.L., Stemock, B., Nielsen, N.M., Kacprzak, G.G., & Murphy, M.T. 2020, ApJ, 904, 28
      MgII Absorbers in High-Resolution Quasar Spectra. I. Voigt Profile Models
      | ADS Abstract | arXiv:2008.08487 | Citations | References | Metrics |

90. Hassan, S., Finlator, K., Dave', R., Churchill, C.W., & Prochaska, J.X. 2020, MNRAS, 492, 2835
      Testing Cosmological Simulations with Damped Ly-alpha Abundance and Metallicity Evolution
      | ADS Abstract | arXiv:1910.07541 | Citations | References | Metrics |

2019

89. Kacprzak, G.G., Pointon, S.K., Nielsen, N.M., Churchill, C.W., Muzahid, S., & Charlton, J.C. 2019, ApJ, 886, 91
      The Relationship Between Galaxy ISM and Circumgalactic Gas Metallicity
      | ADS Abstract | arXiv:1910.04310 | Citations | References | Metrics |

88. Ng, M., Nielsen, N.M., Kacprzak, G.G., Pointon, S.K., Muzahid, S., Churchill, C.W., & Charlton, J.C. 2019, ApJ, 886, 66
      The Kinematics of OVI Circumgalactic Medium: Halo Mass and Outflow Signatures
      | ADS Abstract | arXiv:1904.08564 | Citations | References | Metrics |

87. Pointon, S.K., Kacprzak, G.G., Nielsen, N.M., Muzahid, S., Murphy, M.T., Churchill, C.W., & Charlton, J.C. 2019, ApJ, 883, 78
      Relationship Between the Metallicity of the Circumgalactc Medium and Galaxy Orientation
      | ADS Abstract | arXiv:1907.05557 | Citations | References | Metrics |

86. Martin, C.M., Ho, S.H., Kacprzak, G.G., & Churchill, C.W. 2019, ApJ, 878, 84
      Kinematics of Circumgalactic Gas: Feeding Galaxies and Feedback
      | ADS Abstract | arXiv:1901.09123 | Citations | References | Metrics |

85. Kacprzak, G.G., Vander Vliet, J.R., Nielsen, N.M., Muzahid, S., Pointon, S.K., Churchill, C.W., Ceverino, D., Arraki, K.S.,
      Klypin, A., Charlton, J.C., Lewis, J., 2019, ApJ, 870, 137
      The Relation Between Galaxy ISM and Circumgalactic OVI Gas Kinematics Derived from Observations and ΛCDM Simulations
      | ADS Abstract | arXiv:1811.06028 | Citations | References | Metrics |

2018

84. Nielsen, N.M., Kacprzak, G.G., Churchill, C.W., Pointon, S.K., & Murphy, M.T. 2017, ApJ, 869, 153
      MAGiiCAT VI. The Circumgalactic Medium in Group Environments
      | ADS Abstract | arXiv:1808.09562 | Citations | References | Reads History |

83. Muzahid, S., Fonseca, G., Roberts, A., Rosenwasser, B., Richter, P., Narayanan, A., Churchill, C.W., & Charlton, J.C. 2018, MNRAS, 476, 4965
      COS-Weak: Probing the CGM Using Analogs of Weak MgII Absorbers at z<0.3
      | ADS Abstract | arXiv:1709.03999 | Citations | References | Reads History |

82. Rosenwasser, B., Muzahid, S., Charlton, J.C., Kacprzak, G.G., Churchill, C.W., & Walker, B.P. 2018, MNRAS, 476, 2258
      Understanding the Strongest Intervening OVI Absorber at z∽0.93 towards PG1206+459
      | ADS Abstract | arXiv:1802.00026 | Citations | References | Reads History |

2017

81. Pointon, S.K., Nielsen, N.M., Kacprzak, G.G., Muzahid, S., Churchill, C.W., & Charlton, J. C. 2017, ApJ, 844, 23
      The Impact of the Group Environment on the OVI Circumgalactic Medium
      | ADS Abstract | arXiv:1707.03895 | Citations | References | Reads History |

80. Ho, S.H., Martin, C.M., Kacprzak, G.G., & Churchill, C.W. 2017, ApJ, 835, 267
      Quasars Probing Qalaxies: I. Signature of Gas Accretion at Redshift z~0.2
      | ADS Abstract | arXiv:1611.04579 | Citations | References | Reads History |

79. Nielsen, N.M., Kacprzak, G.G., Sowgat, M., Churchill, C.W., Murphy, M.T., & Charlton, J.C., 2017, ApJ, 834, 148
      The Highly Ionized Circumgalactic Medium is Kinematically Uniform Around Galaxies
      | ADS Abstract | arXiv:1611.07585 | Citations | References | Reads History |

2016

78. Muzahid, S., Kacprzak, G.G., Charlton, J.C., & Churchill, C.W. 2016, ApJ, 823, 66
      Molecular Hydrogen Absorption from the Halo of a z~0.4 Galaxy
      | ADS Abstract | arXiv:1601.06782 | Citations | References | Reads History |

77. Nielsen, N.M., Churchill, C.W., Kacprzak, G.G., Murphy, M.T., & Evans, J.L. 2016, ApJ, 818, 171
      MAGiiCAT IV. Kinematics of the Circumgalactic Medium
      | ADS Abstract | arXiv:1512.06969 | Citations | References | Reads History |

2015

76. Kacprzak, G.G., Muzahid, S., Churchill, C.W., Charlton, J.C., & Nielsen 2015, ApJ, 815, 22
      The Azimuthal Dependence of Outflows and Accretion Detected Using OVI Absorption
      | ADS Abstract | arXiv:1511.03275 | Citations | References | Reads History |

75. Nielsen, N.M., Churchill, C.W., Kacprzak, G.G., Murphy, M.T., & Evans, J.L. 2015, ApJ, 812, 83
      MAGiiCAT V. Orientation of Outflows and Accretion Determined the Kinematics and Column Densities of the Circumgalactic Medium
      | ADS Abstract | arXiv:1505.07167 | Citations | References | Reads History |

74. Muzahid, S., Kacprzak, G.G., Churchill, C.W., Charlton, J.C., Nielsen, N.M., Mathes, N.L., & Trujillo-Gomez, S. 2015, ApJ, 811, 132
      An Extreme Metallicity, Large-Scale Outflow from a Star-Forming Galaxy at z~0.4
      | ADS Abstract | arXiv:1506.01028 | Citations | References | Reads History |

73. Churchill, C.W., Vander Vliet, J.R., Trujillo-Gomez, S., Kacprzak, G.G., & Klypin, A. 2015, ApJ, 802, 10
      Direct Insights into Observational Absorption Line Analysis Methods of the Circumgalactic Medium Using Cosmological Simulations
      | ADS Abstract | arXiv:1409.0914 | Citations | References | Reads History |

72. Kacprzak, G.G., Churchill, C.W., Murphy, M.T., & Cooke, J. 2015, MNRAS, 446, 2861
      Probing the Circumgalactic Medium of Active-Galactic Nuclei with Background Quasars
      | ADS Abstract | arXiv:1411.2611 | Citations | References | Reads History |

2014

71. Mathes, N.L., Churchill, C.W., Kacprzak, G.G., Nielsen, N.M., Trujillo-Gomez, S., Charlton, J.C., & Muzahid, S. 2014, ApJ, 792, 128
      Halo Mass Dependence of HI and OVI Absorption: Evidence for Differential Kinematics
      | ADS Abstract | arXiv:1406.2314 | Citations | References | Reads History |

70. Kacprzak, G.G., Martin, C., Bouche, N., Churchill, C.W., Cooke, J., LeReun, A., Schroetter, I., Ho, S. & Klimek, E. 2014, ApJ, 792, L12
      New Perspective on Galaxy Outflows From the First Detection of Both Intrinsic and Traverse Metal-Line Absorption
      | ADS Abstract | arXiv:1407.4126 | Citations | References | Reads History |

69. Ceverino, D., Klypin, A., Klimek, E., Trujillo-Gomez, S., Churchill, C.W., & Primack, J. 2014, NMRAS, 442, 1545
      Radiative Feedback and the Low Efficiency of Galaxy Formation in Low-Mass Halos at High Redshift
      | ADS Abstract | arXiv:1307.0943 | Citations | References | Reads History |

68. Bordoloi, R., Lilly, S.J., Kacprzak, G.G. & Churchill, C.W. 2014, ApJ, 784, 108
      Modeling the Distribution of MgII Absorbers Around Galaxies Using Background Galaxies and Quasars
      | ADS Abstract | arXiv:1121.3774 | Citations | References | Reads History |

2013

67. Churchill, C.W., Trujillo-Gomez, S., Nielsen, N.M, & Kacprzak, G.G., 2013, ApJ, 779, 87
      MAGiiCAT III. Interpreting the Self-Similarity of the Circumgalactic Medium with Virial Mass using MgII Absorption
      | ADS Abstract | arXiv:1308.2618 | Citations | References | Reads History | MAGiiCAT Home Page |

66. Kacprzak, G.G, Cooke, J., Churchill, C.W., Ryan-Weber, E.V., & Nielsen, N.M, 2013, ApJ, 777, L11
      The Smooth MgII Gas Distribution Throught the Interstellar/Extra-Planar/Halo Interface
      | ADS Abstract | arXiv:1310.1918 | Citations | References | Reads History |

65. Nielsen, N.M., Churchill, C.W., & Kacprzak, G.G. 2012, ApJ, 776, 115
      MAGiiCAT II. General Characteristics of the MgII Absorbing Circumgalactic Medium
      | ADS Abstract | arXiv:1121.1380 | Citations | References | Reads History | MAGiiCAT Home Page |

64. Nielsen, N.M., Churchill, C.W., & Kacprzak, G.G. & Murphy, M.T. 2013, ApJ, 776, 114
      MAGiiCAT I. The MgII Absorber-Galaxy Catalog
      | ADS Abstract | arXiv:1304.6716 | Citations | References | Reads History | MAGiiCAT Home Page |

63. Evans, J.L, Churchill, C.W., Murphy, M.T., Nielsen, N.M, & Klimek, E. 2013, ApJ, 768, 3
      The Redshift Distribution of Intervening Weak MgII Quasar Absorbers and a Curious Dependence on Quasar Luminosity
      | ADS Abstract | arXiv:1303.2111 | Citations | References | Reads History |

62.Churchill, C.W., Nielsen, N.M, Kacprzak, G.G., & Trujillo-Gomez, S. 2013, ApJ, 763, L42
      The Self-Similarity of the Circumgalactic Medium with Galaxy Virial Mass: Implications for Cold-Mode Accretion
      | ADS Abstract | arXiv:1121.1008 | Citations | References | Reads History | MAGiiCAT Home Page |

2012

61. Kacprzak, G.G, Churchill, C.W., & Nielsen, N.M, 2012, ApJ, 760, L7
      Tracing Outflows and Accretion: A Bimodal Azimuthal Dependence of MgII Absorption
      | ADS Abstract | arXiv:1205.0245 | Citations | References | Reads History | MAGiiCAT Home Page |

60. Churchill, C.W., Kacprzak, G.G, Steidel, C.C., Spitler, L.R., Holtzman, J.A., Nielsen, N.M., & Trujillo-Gomez, S. 2012, ApJ, 760, 68
      Quenched Accretion of a Large Scale Metal-Poor Filement due to Virial Shocking in the Halo of a Massive z=0.7 Galaxy
      | ADS Abstract | arXiv:1205.0595 | Citations | References | Reads History |

59. Kacprzak, G.G, Churchill, C.W., Steidel, C., Spitler, L.R., & Holtzman, J.A. 2012, MNRAS, 427, 3029
      Discovery of Multi-Phase Cold Accretion in a Massive Galaxy at z=0.7
      | ADS Abstract | arXiv:1208.4098 | Citations | References | Reads History |

58. Bouche, N., Hohensee, W., Vargas, R., Kacprzak, G.G., Martin, C.L.,, Cooke, J., & Churchill, C.W., 2012 MNRAS, 426, 801
      Physical Properties of Galactic Winds Using Background Quasars
      | ADS Abstract | arXiv:1110.5877 | Citations | References | Reads History |

2011

57. Kacprzak, G.G., & Churchill, C.W. 2011, ApJL, 743, L34
      The HI Mass Density in Galactc Halos, Winds, and Cold Accretion as Traced by MgII Absorption
      | ADS Abstract | arXiv:1111.3359 | Citations | References | Reads History |

56. Kacprzak, G.G., Churchill, C.W., Evans, J.L., Murphy, M.T., & Steidel, C.C. 2011, MNRAS, 416, 3118
      Morphological Properties of z~0.5 Absorption-selected Galaxies: The Role of Inclination
      | ADS Abstract | arXiv:1106.3068 | Citations | References | Reads History |

55. Kacprzak, G.G., Churchill, C.W., Barton, E.J., Cooke, J. 2011, ApJ, 733, 105
      Halo Gas and Galaxy Disk Kinematics of a Volume-Limited Sample of MgII Absorption-Selected Galaxies at z~0.1
      | ADS Abstract | arXiv:1102.4339 | Citations | References | Reads History |

2010

54. Kacprzak, G.G., Murphy, M.T., & Churchill, C.W. 2010, MNRAS, 406, 445
      Galaxy Group at z=0.3 Associated with the Damped Lyman Alpha System Towards Quasar Q1127-145
      | ADS Abstract | arXiv:1003.3669 | Citations | References | Reads History |

53. Kacprzak, G.G., Churchill, C.W., Ceverino, D., Steidel, C.C., Klypin, A., & Murphy, M.T. 2010, ApJ, 711, 533
      Halo Gas and Galaxy Disk Kinematics Derived from Observations and LCDM Simulations of MgII Absorption Selected Galaxies at Intermediate Redshift
      | ADS Abstract | arXiv:0912.2746 | Citations | References | Reads History |

2008

52. Lawton, B., Churchill, C.W., York, B.A., Ellison, S.L., Snow, T.P., Johnson, R.A., Ryan, S.G., & Benn, C.R. 2008, AJ, 136, 994
      Diffuse Interstellar Bands in Seven Intermediate Redshift Damped Ly-alpha Absorbers
      | ADS Abstract | arXiv:0801.0447 | Citations | References | Reads History |

51. Kacprzak, G.G., Churchill, C.W., Steidel, C.C., & Murphy, M.T. 2008, AJ, 135, 922
      Halo Gas Cross Sections And Covering Fractions of MgII Absorption Selected Galaxies
      | ADS Abstract | arXiv:0710.5765 | Citations | References | Reads History |

2007

50. Mshar, A.C., Charlton, J.C., Lynch, R.S. Churchill, C.W., & Kim, T.-S. 2006, ApJ, 669, 135
      The Kinematic Evolution of Strong MgII Absorbers
      | ADS Abstract | arXiv:0706.0515 | Citations | References | Reads History |

49. Kacprzak, G.G., Churchill, C.W., Steidel, C.C., Murphy, M.T., Sargent, W.L.W., & Rauch, M. 2007, ApJL, 662, 909
      A Correlation Between Galaxy Morphology and MgII Halo Absorption Strength
      | ADS Abstract | arXiv:astro-ph/0703377 | Citations | References | Reads History |

48. Churchill, C.W., Kacprzak, G.G., Steidel, C.C., & Evans, J.L. 2007, ApJ, 661, 714
      On the Heterogeneity of Metal--Line and Ly-alpha Absorption in Galaxy Halos at z=0.7
      | ADS Abstract | arXiv:astro-ph/0612560 | Citations | References | Reads History |

2006

47. York, B.A., Ellison, S. E., Lawton, B., Churchill, C.W., Snow, T.P., Johnson, R., & Ryan, S.G. 2006, ApJ, 647, L29
      Detection of the 5780 Diffuse Interstellar Band in a z=0.5 Damped Lyman-alpha System
      | ADS Abstract | arXiv:astro-ph/0605471 | Citations | References | Reads History |

46. Kondo, S., Kobayashi, N., Minowa, Y., Tsijimoto, T. Churchill, C. W., + 13 co-authors, ApJ, 643, 667
      First Detection of NaI D lines in High-Redshift Damped Lyman-alpha Systems
      | ADS Abstract | arXiv:astro-ph/0603290 | Citations | References | Reads History |

2005

45. Masiero, J.R., Charlton, J.C., Ding, J., Churchill, C.W., & Kacprzak, G.G. 2005, ApJ, 623, 57
      Models of Five Absorption Line Systems Along the Line of Sight Toward PG 0117+213
      | ADS Abstract | arXiv:astro-ph/0501139 | Citations | References | Reads History |

44. Ding, J., Charlton, J.C., & Churchill, C.W. 2005, ApJ, 621, 615
      The Absorption Signature of Six MgII-Selected Systems Over 0.5 < z < 0.9
      | ADS Abstract | arXiv:astro-ph/0412384 | Citations | References | Reads History |

2004

43. Ellison, S.L, Churchill, C.W., Rix, S.A., & Pettini, M. 2004, ApJ, 615, 118
      The Number Density of 0.6 < z < 1.7 Mg II Systems from CORALS: Observational Biases at Intermediate Redshift
      | ADS Abstract | arXiv:astro-ph/0407237 | Citations | References | Reads History |

42. Zonak, S.G., Charlton, J.C., Ding, J., & Churchill, C.W. 2004, ApJ, 606, 196
      The Absorption Signatures of Dwarf Galaxies: The z=1.04 Multicloud Weak Mg II Absorber toward PG 1634+706
      | ADS Abstract | arXiv:astro-ph/0403121 | Citations | References | Reads History |

2003

41. Churchill, C.W., Mellon, R.R., Charlton, J.C & Vogt, S.S, 2003, ApJ, 593, 203
      The Spatial, Ionization, and Kinematic Conditions of the z=1.39 DLA in Q0957+061 A,B
      | ADS Abstract | arXiv:astro-ph/0212120 | Citations | References | Reads History |

40. Ding, J., Charlton, J.C., Churchill, C.W., & Palma, C. 2003, ApJ, 590, 746
      The Multiphase Absorption System Toward PG 1206+459
      | ADS Abstract | arXiv:astro-ph/0303102 | Citations | References | Reads History |

39. Charlton, J.C., Ding, J., Zonak, S.G., Churchill, C.W., Bond, N.A., & Rigby, J.R. 2003, ApJ, 589, 111
      High Resolution STIS/HST and HIRES/KECK Spectra of Three Weak Absorbers toward PG 1634+706
      | ADS Abstract | arXiv:astro-ph/0302394 | Citations | References | Reads History |

38. Ding, J., Charlton, J.C., Bond, N. A., Zonak, S.G., & Churchill, C.W. 2003, ApJ, 587, 551
      A Quadruple Phase Strong Mg II Absorber at z=0.9902 Toward PG 1634+706
      | ADS Abstract | arXiv:astro-ph/0302298 | Citations | References | Reads History |

37. Churchill, C.W., Vogt, S.S, & Charlton, J.C. 2003, AJ, 125, 98
      The Physical Conditions of Intermediate Redshift Mg II Absorbing Clouds from Voigt Profile Analysis
      | ADS Abstract | arXiv:astro-ph/0210196 | Citations | References | Reads History |

2002

36. Steidel, C.C., Kollmeier, J.A., Shapely, A.E., Churchill, C.W., Dickinson, M., & Pettini, M. 2002, ApJ, 570, 526
      The Kinematic Connection Between Absorbing Gas Toward QSOs and Galaxies at Intermediate Redshift
      | ADS Abstract | arXiv:astro-ph/0201353 | Citations | References | Reads History |

35. Rigby, J.R., Charlton, J.C., & Churchill, C.W. 2002, ApJ, 565, 743
      The Population of Weak Mg II Absorbers. II The Properties of Single Cloud Systems
      | ADS Abstract | arXiv:astro-ph/0110191 | Citations | References | Reads History |

2001

34. Bond, N.A., Churchill, C.W., Charlton, J.C., & Vogt, S.S. 2001, ApJ, 562, 641
      High Redshift Superwinds as the Source of the Strongest Mg II Absorbers: A Feasibility Analysis
      | ADS Abstract | arXiv:astro-ph/0108062 | Citations | References | Reads History |

33. Murphy, M.T., Webb, J.K., Flambaum, V.V., Churchill, C.W., & Prochaska, J.X. 2001, MNRAS, 327, 1223
      Possible Evidence for a Variable Fine Structure Constant from QSO Absorption Lines: Systematics Errors
      | ADS Abstract | arXiv:astro-ph/0012420 | Citations | References | Reads History |

32. Murphy, M.T., Webb, J.K., Flambaum, V.V., Dzuba, V.A., Churchill, C.W., Prochaska, J.X., Barrow, J.D., & Wolfe, A.M. 2001, MNRAS, 327, 1208
      Possible Evidence for a Variable Fine Structure Constant from QSO Absorption Lines: Motivations, Analysis, and Results
      | ADS Abstract | arXiv:astro-ph/0012419 | Citations | References | Reads History |

31. Churchill, C.W. 2001, ApJ, 560, 92
      Mg II Absorbers Number Density at z~0.05: Implications for Omega(DLA) Evolution
      | ADS Abstract | arXiv:astro-ph/0105044 | Citations | References | Reads history |

30. Webb, J.K., Murphy, M.T., Flambaum, V.V., Dzuba, V.A., Barrow, J.D., Churchill, C.W., Prochaska, J.X., & Wolfe, A.M. 2001, Phys. Rev. Lett, 87, 091301
      Further Evidence for Cosmological Evolution of the Fine Structure Constant
      | ADS Abstract | arXiv:astro-ph/0012539 | Citations | References | Reads History |

29. Bond, N.A., Churchill, C.W., Charlton, J.C., & Vogt S.S. 2001, ApJ, 557, 761
      Evidence for Expanding Superbubbles in a Galaxy at z=0.7443
      | ADS Abstract | arXiv:astro-ph/0101049 | Citations | References | Reads History |

28. Churchill, C.W., & Vogt, S.S. 2001, AJ, 122, 679
      The Kinematics of Intermediate Redshift Mg II Absorbers
      | ADS Abstract | arXiv:astro-ph/0106006 | Citations | References | Reads history |

27. Bouche', N., Lowenthal, J.D., Charlton, J.C., Bershady, M.A., Churchill, C. W., & Steidel, C.C. 2001, ApJ, 550, 585
      H-Alpha Imaging with HST+NICMOS of an Elusive DLA Cloud at z=0.6
      | ADS Abstract | arXiv:astro-ph/0011374 | Citations | References | Reads History |

26. Ganguly, R. Eracleous, M., Charlton, J.C., Brandt, W.N., & Churchill, C.W. 2001, ApJ, 549, 133
      On the Origin of Intrinsic Narrow Absorption Lines in z < 1 QSOs
      | ADS Abstract | arXiv:astro-ph/0010192 | Citations | References | Reads History |

2000

25. Charlton, J.C., Mellon, R.R., Rigby, J.C., & Churchill, C.W. 2000, ApJ, 545, 635
      Anticipating High-Resolution STIS Spectra of Four Multiphase Mg II Absorbers: A Test of Photoionization Models
      | ADS Abstract | Citations | References |

24. Charlton, J. C., Churchill, C.W., & Rigby, J. R. 2000, ApJ 544, 702
      QSO Absorption Line Constraints on Intragroup High-Velocity Clouds
      | ADS Abstract | arXiv:astro-ph/0002001 | Citations | References |

23. Churchill, C.W., Mellon, R.R., Charlton, J.C., Jannuzi, B.T., Kirhakos, S., Steidel, C.C., & Schneider, D.P. 2000, ApJ, 543, 577
      Low and High Ionization Absorption Properties of Mg II Absorption Selected Galaxies at Intermediate Redshifts. II. Taxonomy, Kinematics, and Galaxies
      | ADS Abstract | arXiv:astro-ph/0005586 | Citations | References | Reads History |

22. Churchill, C.W., Mellon, R.R., Charlton, J.C., Jannuzi, B.T., Kirhakos, S., Steidel, C.C., & Schneider, D.P. 2000, ApJS, 130, 91
      Low and High Ionization Absorption Properties of Mg II Absorption Selected Galaxies at Intermediate Redshifts. I. General Properties
      | ADS Abstract | arXiv:astro-ph/0005585 | Citations | References | Reads History |

1999

21. Churchill, C.W., Mellon, R.R., Charlton, J.C., Jannuzi, B.T., Kirhakos, S., Steidel, C.C., & Schneider, D.P. 1999, ApJ, 519, L43
      The C IV Absorption - Mg II Kinematics Connection in z~0.7 Galaxies
      | ADS Abstract | arXiv:astro-ph/9904273 | Citations | References |

20. Churchill, C.W., & Charlton, J.C. 1999, AJ, 118, 59
      The Multiple Phases of Intermediate/Halo Gas in a Possible Group of Galaxies at z~1
      | ADS Abstract | arXiv:astro-ph/9809042 | Citations | References |

19. Ganguly, R., Eracleous, M., Charlton, J.C., & Churchill, C.W. 1999, AJ, 117, 2594
      Intrinsic Narrow Line Absorption in Keck/HIRES Spectra of a Sample of Six Quasars
      | ADS Abstract | Citations | References |

18. Churchill, C.W., Schneider, D.P. Schmidt, M., & Gunn, J.E. 1999, AJ, 117, 2573
      An Unusual "Mini-BAL" Quasar at z=4.59
      | ADS Abstract | arXiv:astro-ph/9902371 | Citations | References |

17. Webb, J.K., Flambaum, V.V., Churchill, C.W., Drinkwater, M.J., & Barrow, J.D. 1999, Phys. Rev. Lett., 82, 884
      A Search for Time Variation in the Fine Structure Constant
      | ADS Abstract | arXiv:astro-ph/9803165 | Citations | References |

16. Churchill, C.W., Rigby, J.R., Charlton, J.C., & Vogt, S.S. 1999, ApJS, 120, 51
      The Population of Weak Mg II Absorbers I. A Survey of 26 QSO HIRES/Keck Spectra
      | ADS Abstract | arXiv:astro-ph/9807131 | Citations | References | Reads History |

1998

15. Smith, G.H., & Churchill, C.W. 1998, MNRAS, 297, 388
      Chromospheric Ca II H and K Emission Among Subdwarfs
      | ADS Abstract | arXiv:astro-ph/9803124 | Citations | References |

14. Churchill, C.W., & Le Brun, V. 1998, ApJ, 499, 677
      High Metallicity Mg II Absorbers in the z < 1 Ly-alpha Forest of PKS 0454+039: Giant LSB Galaxies?
      | ADS Abstract | arXiv:astro-ph/9801124 | Citations | References |

13. Charlton, J.C., & Churchill, C.W. 1998, ApJ, 499, 181
      The Kinematic Composition of Mg II Absorbers
      | ADS Abstract | arXiv:astro-ph/9712235 | Citations | References |

12. Ganguly, R., Churchill, C.W., & Charlton, J.C. 1998, ApJ, 498, L103
      An Aluminum Enhanced Cloud in a C IV Absorber at z=1.94
      | ADS Abstract | arXiv:astro-ph/9803122 | Citations | References |

1997 (Year of Ph.D.)

11. Churchill, C.W. 1997, Ph.D. University of California, Santa Cruz
      The Low Ionization Gaseous Context in Intermediate Redshift Galaxies
      | ADS Abstract | on-line version | Citations |

10. Churchill, C.W. 1997, PASP, 109, 738
      The Low Ionization Gaseous Context in Intermediate Redshift Galaxies
      | ADS Abstract | Reads History |

09. Smith, G.H., Shetrone, M.D., Bell, R., Churchill, C.W., Briley, M. 1997, PASP, 109, 236
      CNO Abundances of Bright Giants in the Globular Cluster M5
      | ADS Abstract | Citations | References |

1996

08. Charlton, J.C., & Churchill, C.W. 1996, ApJ, 465, 461
      Mg II Absorption in Galaxies: Halos or Disks
      | ADS Abstract | Citations | References |

07. Churchill, C.W, Steidel C.C, & Vogt, S.S 1996, ApJ, 471, 164
      On the Spatial and Kinematic Distribution of Mg II Absorbing Gas in z~0.7 Galaxies
      | ADS Abstract | arXiv:astro-ph/9605180 | Citations | References |

06. Lu, L, Sargent, W.L.W., Barlow, T.A., Churchill, C.W., & Vogt, S.S. 1996, ApJS, 107, 457
      Abundances at High Redshift: The Chemical Enrichment History of DLA Galaxies
      | ADS Abstract | arXiv:astro-ph/9606044 | Citations | References |

05. Smith, G.H., Shetrone, M.D., Bell, R., & Churchill, C.W., Briley, M. 1996, AJ, 112, 1511
      CNO Abundances of Bright Giants in the Globular Cluster M3 and M13
      | ADS Abstract | Citations | References |

1995

04. Charlton, J.C., Churchill, C.W, & Linder, S.M 1995, ApJL, 452, L81
      Ly-alpha Absorbers with Double Lines of Sight
      | ADS Abstract | arXiv:astro-ph/9508052 | Citations | References |

03. Churchill, C.W., & Allen, S.L. 1995, PASP, 107, 193
      Treatment for Background Correction on the Hamilton Echelle Spectrograph
      | ADS Abstract | Citations | References | Code Download |

1992

02. Penny, A.J., Smith, G.H., & Churchill, C.W. 1992, MNRAS, 257, 89
      CN and CH Inhomogeneities Among Lower Giant Branch Stars in M71
      | ADS Abstract | Citations | References |

01. Smith, G.H., Dupree, A.K., & Churchill, C.W. 1992, AJ, 104, 2005
      Spectroscopy of the Ca II K Line of Metal-Poor Field Red Giants I. Southern Hemisphere Observations
      | ADS Abstract | Citations | References |


Proceedings and Articles

Post 2005, conferences have not been requiring proceedings articles since the organizers now place the presentations online.

2005

Churchill, C.W., Kacprzak, G.G., & Stiedel, C.C. 2005, IAU, 199, 24
MgII Absorption Through Intermeidate Galaxies
in "Probing Galaxies through Quasar Absorption Lines", eds. P.R. Williams, C-G Shu, & B. Menard

Churchill, C.W., Steidel, C.C., & Kacprzak, G.G. 2005, ASP Conf. Proc, V331, 387
Mg II Absorbing Galaxies: Morphologies and Kinematics
in "Extraplanar Gas", ed. R. Braun

Kacprzak, G.G., Churchill, C.W., & Stiedel, C.C. 2005 IAU, 199, 80
Galaxy Morphology - Halo Gas Connections
in "Probing Galaxies through Quasar Absorption Lines", eds. P.R. Williams, C-G Shu, & B. Menard

Lawton, B., York, B., Ellison, S.L., Churchill, C.W., Johnson, R. A, & Snow, T.P 2005, IAU, 199, 430
A Search for Organic Molecules in Intermediate Redshift DLAs
in "Probing Galaxies through Quasar Absorption Lines", eds. P.R. Williams, C-G Shu, & B. Menard

Lawton, B., York, B., Ellison, S.L., Churchill, C.W., Johnson, R. A, & Snow, T.P 2005, IAU, 231, p228
A Search for Diffuse Interstellar Bands in Intermediate Redshift DLAs
in "Astrochemistry Throughout the Universe", eds. D.C. Lis, G.A. Blake, & E. Herbst

2004

Ellison, S.L., Pettini, M. Churchill, C.W., Hook, I.M., Lopez, S. Rix, S., Shaver, P., Wall, J.V., & Ysn, L. 2004, ESO Messenger, 113, 64
The CORALS Survey - A Review and Progress Report on The Search for Dust Obscured Quasar Absorption Line Systems

2003

Churchill, C.W., & Steidel, C.C. 2003, ASSL Conf. Proc., V281, 149
MgII/CIV Kinematics vs. Stellar Kinematics in Galaxies
in "The IGM/Galaxy Connection: The Distribution of Baryons at z=0", eds. J.L. Rosenberg & M.E. Putman

Ellison, S.E., Churchill, C.W., Pettnin, M., & Rix, S. 2003, IAUJD, 15, 7
The Corals Survey: Dust & Metals in 0.5 < z < 0.7 Absorbers
in "Elemental Abundances in Old Stars and Damped Lyman-alpha Systems"

2002

Charlton, J.C., Churchill, C.W., Ding, J., Zonak, S. Bond, N., & Rigby, J.R. 2002, ASP Conf. Proc., V254, 122
Phase Structure of Weak MgII Absorbers: Star Forming Pockets Outside of Galaxies
in "Extragalactic Gas at Low Redshift", eds. J.S. Mulchaey & J. Stocke

Churchill, C.W., Charlton, J.C., & Masiero, J. 2002, ASP Conf. Proc., V254, 236
Mapping Metal-Enriched High Velocity Clouds to Very Low HI Column Densities
in "Extragalactic Gas at Low Redshift", eds. J.S. Mulchaey & J. Stocke

2001

Charlton, J.C., Churchill, C.W., & Rigby,, J.R. 2001, ASP Conf. Proc., V240, 487
QSO Absorption Line Constraints on Intra-group High-Velocity Clouds
in "Gas and Galaxy Evolution", eds. J.E. Hibbard, M. Rupen, & J.H. van Gorkom

Churchill, C.W. 2001, ASP Conf. Proc., V240, 31
Kinematics of log N(HI)~17 cm-2, Metal-Rich Gas Extended Around Intermediate Redshift Galaxies
in "Gas and Galaxy Evolution", eds. J.E. Hibbard, M. Rupen, & J.H. van Gorkom

Rigby, J.R., Charlton, J.C., & Churchill, C.W. 2001, ASP Conf. Proc., V240, 58
Weak Mg II Absorbers at z~1: Low N(HI) HVCs, SNR in Dwarf Galaxies, or Population III Remnants?
in "Gas and Galaxy Evolution", eds. J.E. Hibbard, M. Rupen, & J.H. van Gorkom

2000

Charlton, J.C., & Churchill, C.W. 2000, (e-book), article 2366
Quasistellar Objects: Intervening Absorption Lines
Mac Millan: on-line version
abs/astro-ph/0006002
in Encyclopedia of Astronomy and Astrophysics, ed. P. Murdin

Churchill, C.W. 2000, ASP Conf. Ser., V200, 271
On the Possibility that Mg II Absorbers can track the Merger Evolution of Galaxy Groups from High Redshift
in "Clustering at High Redshift", eds. A. Mazure, O. Le Fevre, and V. Le Brun

Churchill, C.W., Mellon, R.R., Charlton, J.C., & Jannuzi, B.T. 2000, HST Conf., p24
Multiphase Gas in Intermediate Redshift Galaxies
in "A Decade of HST Science", eds. M. Livio, K. Noll, & M. Stiavelli

Ganguly, R. Bond, N.A., Charlton, J.C., Eracleous, M.E., Brandt, W.N., & Churchill, C.W. 2000, HST Conf., p36
On the Origins of QSO-intrinsic Narrow Absorption Lines
in "A Decade of HST Science", eds. M. Livio, K. Noll, & M. Stiavelli

1999

Le Brun, V., & Churchill, C.W., 1999, ASP Conf. Ser., V170, 315
Using Weak Mg II Lines to Chart Low Surface Brightness Galaxies
in "The low Surface Brightness Universe", eds J.I. Davies, C. Impey, &S. Phillipp

1998

Charlton, J.C., & Churchill, C.W. 1998, Proc. of 13th IAP Coll., p223
The Distribution of Gas In and Around Galaxies
in "Structure et Evolution du Milieu Inter-Galactique Revele par Raies D'Absorption dans le Spectre des Quasars", eds. P. Petitjean & S. Charlot

Churchill, C.W. 1998, Proc. of 13th IAP Coll., p229
Mg II Selected Absorbers: Ionization Structures and a Survey of Weak Systems
in "Structure et Evolution du Milieu Inter-Galactique Revele par Raies D'Absorption dans le Spectre des Quasars", eds. P. Petitjean & S. Charlot

Churchill, C.W., & Charlton, J.C. 1998, , PASP Conf. Proc., V136, 187
Kinematics and Cloud to Cloud Abundance Ratios: A Rosetta Stone for Disk and Halo Components in Mg II Absorbers
in "Galactic Halos", ed. D. Zaritsky

Churchill, C.W., & Le Brun, V. 1998, Proc. of 13th IAP Coll., p378
Mg II Detection in the Lyman Alpha Forest: Metal Rich Cloud or LSB/Dwarf Galaxy?
in "Structure et Evolution du Milieu Inter-Galactique Revele par Raies D'Absorption dans le Spectre des Quasars", eds. P. Petitjean & S. Charlot

1997

Charlton, J.C., & Churchill, C.W. 1997, ASP Conf. Proc., V114, 55
Mg II Absorbers: Disks, Halos, Satellites, and Pairs?
in "Young Galaxies and QSO Absorption-Line Systems", ed. S.M. Viegas, R. Gruenwald, R.R. de Carvalho

Churchill, C.W. 1997, ASP Conf. Proc., V114, 59
Establishing the Connections Between Galaxies and Mg II Absorbing Gas
in "Young Galaxies and QSO Absorption-Line Systems", ed. S.M. Viegas, R. Gruenwald, R.R. de Carvalho

Churchill, C.W. 1997, PhD, Source DAI-B 58/06, p3087
The Low Ionization Gaseous Context in Intermediate Redshift Galaxies
Advisor: Steven S. Vogt

Churchill, C.W. 1997, AIP Conf. Proc., V408, 313
QSO Absorption Lines: The UV Rest-Frame from 0 < z < 4
in "The Ultraviolet Universe at Low and High Redshift: Probing the Progress of Galaxy Evolution", eds. W.H. Waller, et al.

1996

Charlton, J.C., & Churchill, C.W. 1996, ASP Conf. Ser., V112, 63
QSO Absorption Line Systems as a Probe of Galaxies Like the Milky Way
in "The History of the Milky Way and Its Satellite System", eds. A. Burkert, D. Hartmann, & S. Majewski

Churchill, C.W., & Vogt, S.S. 1996, ASP Conf. Ser., V92, 501
The Halo from the Outside In: QSO Absorption Lines
in "Formation of the Galactic Halo: Inside and Out", eds. H. Morrison & A. Sarajedini

1995

Churchill, C.W., Vogt, S.S., & Steidel, C.C. 1995, ESO Astrophysics Symposia, p153
From Metal-Line Absorption to Halo Kinematics?
in "QSO Absorption Lines", ed. G. Meylan


Technical Reports

1997

Harlow, J., Ramsey, L., Churchill, C.W., Ciardullo, R., Engel, L., Feldmeier, J., & Schneider, D. 1997, Penn State Internal Report,
Department of Astronomy and Astrophysics, V9707
The UFOE Spectrograph Instrument Reference Manual

1995

Churchill, C.W. 1995, Lick Observatory Technical Report, 74
Introduction to Echelle Data Reduction Using the Image Reduction Analysis Facility: Emphasizing the Hamilton Echelle Spectrograph


AAS Abstracts

Author or Co-author on abstracts published in the Bulletin of the American Astronomical Society (1992-present)
NASA/ADS Listing