Calendar

Mar
25
Fri
NMSU Spring Holiday
Mar 25 all-day
Mar
31
Thu
Tea time
Mar 31 @ 2:00 pm – 2:45 pm

Each week a student or faculty member will be bringing some tasty treats to share with the department. Hot coffee and tea will also be served. To sign up, or to see who will be bringing the goodies, please see the following link: https://docs.google.com/spreadsheets/d/15rcVq9iHKqX9lWkHWs3HlawO5QW1k3E-4GcZ0mc1GM4/edit#gid=0  Don’t miss it!

Apr
7
Thu
Tea time
Apr 7 @ 2:00 pm – 2:45 pm

Each week a student or faculty member will be bringing some tasty treats to share with the department. Hot coffee and tea will also be served. To sign up, or to see who will be bringing the goodies, please see the following link: https://docs.google.com/spreadsheets/d/15rcVq9iHKqX9lWkHWs3HlawO5QW1k3E-4GcZ0mc1GM4/edit#gid=0  Don’t miss it!

Apr
14
Thu
Tea time
Apr 14 @ 2:00 pm – 2:45 pm

Each week a student or faculty member will be bringing some tasty treats to share with the department. Hot coffee and tea will also be served. To sign up, or to see who will be bringing the goodies, please see the following link: https://docs.google.com/spreadsheets/d/15rcVq9iHKqX9lWkHWs3HlawO5QW1k3E-4GcZ0mc1GM4/edit#gid=0  Don’t miss it!

Apr
20
Wed
Colloquium Thesis Proposal: Sten Hasselquist
Apr 20 @ 1:00 pm – 2:00 pm
Colloquium Thesis Proposal:  Sten Hasselquist @ Hardman/Jacobs 225

Title:  TBD

Sten Hasselquist

 

Apr
21
Thu
Tea time
Apr 21 @ 2:00 pm – 2:45 pm

Each week a student or faculty member will be bringing some tasty treats to share with the department. Hot coffee and tea will also be served. To sign up, or to see who will be bringing the goodies, please see the following link: https://docs.google.com/spreadsheets/d/15rcVq9iHKqX9lWkHWs3HlawO5QW1k3E-4GcZ0mc1GM4/edit#gid=0  Don’t miss it!

Apr
28
Thu
Tea time
Apr 28 @ 2:00 pm – 2:45 pm

Each week a student or faculty member will be bringing some tasty treats to share with the department. Hot coffee and tea will also be served. To sign up, or to see who will be bringing the goodies, please see the following link: https://docs.google.com/spreadsheets/d/15rcVq9iHKqX9lWkHWs3HlawO5QW1k3E-4GcZ0mc1GM4/edit#gid=0  Don’t miss it!

May
5
Thu
Tea time
May 5 @ 2:00 pm – 2:45 pm

Each week a student or faculty member will be bringing some tasty treats to share with the department. Hot coffee and tea will also be served. To sign up, or to see who will be bringing the goodies, please see the following link: https://docs.google.com/spreadsheets/d/15rcVq9iHKqX9lWkHWs3HlawO5QW1k3E-4GcZ0mc1GM4/edit#gid=0  Don’t miss it!

Sep
9
Fri
Colloquium Thesis Proposal: Lauren Kahre
Sep 9 @ 3:15 pm – 4:15 pm
Colloquium Thesis Proposal: Lauren Kahre @ Biology Annex 102

Extinction mapping with LEGUS

Lauren Kahre

The study of star formation and galaxy evolution in nearby galaxies depends on obtaining accurate stellar photometry in those galaxies. However, dust in the galaxies hinders our ability to obtain accurate stellar photometry, particularly in star-forming galaxies that have the highest concentrations of dust. This proposal presents a thesis project to develop a method for generating extragalactic extinction maps using photometry of massive stars from the Hubble Space Telescope. This photometry spans nearly 50 galaxies observed by the Legacy Extragalactic Ultraviolet Survey (LEGUS). The derived extinction maps can be used to correct other stars and Halpha maps (from the Halpha LEGUS) for extinction, and will be used to constrain changes in the dust-to-gas ratio across the galaxy sample and in different star formation rate, metallicity and morphological environments. Previous studies have found links between galaxy metallicty and the dust-to-gas mass ratio. The relationship between these two quantities can be used to constrain chemical evolution models.

Selected galaxies will also be compared to IR-derived dust maps for comparison to recent M31 results from Dalcanton et al. (2015) which found a minimum factor of 2 inconsistency between their extinction-derived maps and emission-derived maps from Draine et al. (2014).

Sep
20
Tue
Colloquium Thesis Proposal: Ethan Dederick
Sep 20 @ 3:00 pm – 4:00 pm
Colloquium Thesis Proposal: Ethan Dederick @ Science Hall 310

Utilizing Planetary Oscillations to Constrain the Interior Structure of the Jovian Planets

Ethan Dederick

Seismology has been the premier tool of study for understanding the
interior structure of the Earth, the Sun, and even other stars. Yet in this
thesis proposal, we wish to utilize these tools to understand the interior
structure of the Jovian planets, Saturn in particular. Recent observations
of spiral density structures in Saturn’s rings caused by its oscillations
have provided insight into which modes exist within Saturn and at what
frequencies. Utilizing these frequencies to compare to probable mode can-
didates calculated from Saturn models will also us to ascertain the interior
profiles of state variables such as density, sound speed, rotation, etc. Using
these profiles in a Saturn model, coupled with tweaking the interior struc-
ture of the model, i.e. the inclusion of stably stratified regions, should
allow us to explain which modes are responsible for the density structures
in the rings, as well as predict where to look to find more such structures.
In doing so, we will not only have a much greater understanding of Sat-
urn’s interior structure, but will have constructed a method that can also
be applied to Jupiter once observations of its mode frequencies become
available. In addition, we seek to explain if moist convection on Jupiter is
responsible for exciting its modes. We aim to do this by modeling Jupiter
as a 2D harmonic oscillator. By creating a resonance between moist con-
vective storms and Jovian modes, we hope to match the expected mode
energies and surface displacements of Jupiter’s oscillations.