Calendar

Feb
23
Fri
Colloquium Thesis Proposal: Jodi Berdis
Feb 23 @ 3:15 pm – 4:15 pm
Colloquium Thesis Proposal: Jodi Berdis @ BX102

Colloquium Title

Jodi Berdis, NMSU

Abstract text

Feb
26
Mon
Pizza Lunch: Shuo Wang
Feb 26 @ 12:30 pm – 1:30 pm
Pizza Lunch: Shuo Wang @ AY 119
Mar
5
Mon
Pizza Lunch: Rene Walterbos
Mar 5 @ 12:30 pm – 1:30 pm
Pizza Lunch: Rene Walterbos @ AY 119
Mar
12
Mon
Pizza Lunch: Caitlin Doughty
Mar 12 @ 12:30 pm – 1:30 pm
Pizza Lunch: Caitlin Doughty @ AY 119

Using CGM metal absorbers to look for galaxies

Mar
15
Thu
Colloquium Thesis Proposal: Drew Chojnowski
Mar 15 @ 3:15 pm – 4:15 pm
Colloquium Thesis Proposal: Drew Chojnowski @ Domenici Hall 102

The Circumstellar Disks and Binary Companions of Be Stars

Drew Chojnowski, NMSU

Tremendous progress has been made over the past two decades toward understanding Be stars, but a number of key aspects of them remain enigmatic. The unsolved mysteries include identification of the mechanism responsible for disk formation, the reason this mechanism occasionally turns off or on unexpectedly, the source of viscosity in the circumstellar disks, and the cause of slowly precessing density perturbations in the disks of many or most Be stars. On a deeper level, the origin of Be stars’ near-critical rotation is unknown, with one possible explanation being spin-up due to interaction with a binary companion. A better understanding of these stars is needed, with a particular focus on high-mass binaries being warranted in the age of gravitational wave astronomy. In this dissertation, I will extend the knowledge and understanding of Be stars through a series of three projects. First, I will present and describe the largest ever homogeneous, spectroscopic sample of Be stars to date. I will then focus on investigation of a rare class of Be stars found in binary systems with hot, low mass companions. The second project will present detailed characterization and modeling of HD~55606, a newly discovered member of this class. Finally, I will discuss the results of spectroscopic monitoring of seven newly discovered systems and establish or place limits on the orbital parameters of the binary components.

Apr
2
Mon
Pizza Lunch: Michael Engelhardt (Physics), “The quarks in the proton go round and round …”
Apr 2 @ 12:30 pm – 1:30 pm
Pizza Lunch: Michael Engelhardt (Physics), "The quarks in the proton go round and round ..." @ AY 119

The quarks in the proton go round and round …

Apr
13
Fri
Colloquium Thesis Proposal: Emma Dahl
Apr 13 @ 3:15 pm – 4:15 pm
Colloquium Thesis Proposal: Emma Dahl @ BX102

Colloquium Title

Emma Dahl, NMSU

Abstract text

Apr
16
Mon
Pizza Lunch: Inclusive Astronomy
Apr 16 @ 12:30 pm – 1:30 pm
Apr
23
Mon
Pizza Lunch: Moire Prescott
Apr 23 @ 12:30 pm – 1:30 pm
Pizza Lunch: Moire Prescott @ AY 119

 Glowing Cosmic Gas at Low and High Redshift

Apr
30
Mon
Pizza Lunch: Jon Holtzman
Apr 30 @ 12:30 pm – 1:30 pm
Pizza Lunch: Jon Holtzman @ AY 119

APOGEE and the Milky Way disk