Search
Skip to Search Results- 2Koch, Eric W
- 1Ball, Brianna D.
- 1Green, Kaylie
- 1Koning, Alice H.
- 1Nokes, Charles D. A.
- 1Peltonen, Joshua CW
-
Fall 2021
Molecular abundance ratios have been proposed to trace the chemical and evolutionary state of star forming molecular clouds because the formation and destruction of such molecules is dependent on the local environmental conditions, like the density and radiation field that both evolve with time....
-
Clusters, Clouds, and Correlations: Relating Young Clusters to Giant Molecular Clouds in M33 and M31
DownloadFall 2023
Using young clusters and giant molecular clouds (GMCs), we constrain timescales and distances involved in the star formation process in the Triangulum (M33) and Andromeda (M31) galaxies. The young star clusters come from the PHATTER catalogue, with 1214 clusters in M33 and the PHAT catalogue,...
-
Connecting galactic to local scales in the neutral interstellar medium across the Local Group
DownloadFall 2020
Star formation drives secular galaxy evolution by linking stars and gas in galaxies. This link forms part of the "baryonic cycle," where stars form from interstellar gas, and a portion of that gas is returned to the interstellar medium upon the star’s death. Understanding the baryonic cycle and...
-
Diffuse Molecular Gas in the Cygnus X Star Forming Region and its Effect on the Star Formation Law
DownloadFall 2015
Observations of star forming regions in our Milky Way show that there are two different forms of molecular gas: bright star forming molecular clouds and large diffuse clouds. What is not yet known is the difference in physical properties between these two types of molecular gas and the...
-
Spring 2019
The ionospheric Alfvén resonator (IAR) is an area of space that, due to sharp Alfvén speed gradients, has the ability to trap electromagnetic plasma wave energy, where it bounces in the Alfvén mode between near-Earth space and the lower ionosphere. Here we present research that, by comparing...
-
Spring 2016
I use Keck I spectroscopic observations of 701 Hα sources in the nearby spiral galaxy M33 to determine oxygen, nitrogen, sulfur, and neon abundances in HII regions across the face of the galactic disk. Abundance measurements are obtained with two separate methods (PyNeb and NEAT) through the use...
-
Fall 2016
I present new observations of 21-cm hydrogen line emission from the nearby spiral galaxy M33 (Triangulum) using the Jansky Very Large Array (VLA) in New Mexico. I have spent the majority of the past two years calibrating and imaging these new observations. This was a particularly time-consuming...
-
The Missing Supernova Remnant Problem: Searching for Galactic Supernova Remnants with EMU & POSSUM
DownloadFall 2023
Supernova remnants (SNRs) are an important part of the stellar feedback cycle that regulates star formation and influences the evolution of galaxies. They disperse the heavy elements formed in the cores of massive stars back into the interstellar medium, are responsible for forming and destroying...