activity
20092016
most citedMid-Infrared Evidence for Accelerated Evolution in Compact Group Galaxies

51 citations · 267 across the 13 of their papers we have counts for

collaborators

13 papers

astro-ph.IM2016★ 21 cited

Two NIRCam channels are Better than One: How JWST Can Do More Science with NIRCam's Short-Wavelength Dispersed Hartmann Sensor

Everett Schlawin, Marcia Rieke, Jarron Leisenring +8

The James Webb Space Telescope (JWST) offers unprecedented sensitivity, stability, and wavelength coverage for transiting exoplanet studies, opening up new avenues for measuring at…

astro-ph.GA2016★ 15 cited

The Ultraviolet and Infrared Star Formation Rates of Compact Group Galaxies: An Expanded Sample

Laura Lenkic, Panayiotis Tzanavaris, Sarah Gallagher +8

Compact groups of galaxies provide insight into the role of low-mass, dense environments in galaxy evolution because the low velocity dispersions and close proximity of galaxy memb…

astro-ph.GA2016★ 17 cited

Hierarchical Formation in Action: Characterizing Accelerated Galaxy Evolution in Compact Groups Using Whole-Sky WISE Data

Catherine Zucker, Lisa May Walker, Kelsey Johnson +3

Compact groups provide an environment to study the growth of galaxies amid multiple prolonged interactions. With their dense galaxy concentrations and relatively low velocity dispe…

astro-ph.GA2015★ 10 cited

Exploring X-ray Binary Populations in Compact Group Galaxies with

P. Tzanavaris, A. E. Hornschemeier, S. C. Gallagher +5

We obtain total galaxy X-ray luminosities, , originating from individually detected point sources in a sample of 47 galaxies in 15 compact groups of galaxies (CGs). For the gr…

astro-ph.GA2015★ 11 cited

Global Properties of Neutral Hydrogen in Compact Groups

Lisa May Walker, Kelsey E. Johnson, Sarah C. Gallagher +5

Compact groups of galaxies provide a unique environment to study the evolution of galaxies amid frequent gravitational encounters. These nearby groups have conditions similar to th…

astro-ph.HE2014★ 16 cited

Some Like It Hot: Linking Diffuse X-ray Luminosity, Baryonic Mass, and Star Formation Rate in Compact Groups of Galaxies

Tyler D. Desjardins, Sarah C. Gallagher, Ann E. Hornschemeier +6

We present an analysis of the diffuse X-ray emission in 19 compact groups of galaxies (CGs) observed with Chandra. The hottest, most X-ray luminous CGs agree well with the galaxy c…

astro-ph.GA2013★ 28 cited

High Resolution Radio and Optical Observations of the Central Starburst in the Low-Metallicity Dwarf Galaxy II Zw 40

Amanda A. Kepley, Amy E. Reines, Kelsey E. Johnson +1

The extent to which star formation varies in galaxies with low masses, low metallicities, and high star formation rate surface densities is not well-constrained. To gain insight in…

astro-ph.CO2013★ 33 cited

The Optical Green Valley vs Mid-IR Canyon in Compact Groups

Lisa May Walker, Natalie Butterfield, Kelsey Johnson +7

Compact groups of galaxies provide conditions similar to those experienced by galaxies in the earlier universe. Recent work on compact groups has led to the discovery of a dearth o…

astro-ph.CO2013★ 21 cited

Stellar Populations in Compact Galaxy Groups: a Multi-Wavelength Study of HCGs 16, 22, and 42, their Star Clusters and Dwarf Galaxies

I. S. Konstantopoulos, A. Maybhate, J. C. Charlton +10

We present a multi-wavelength analysis of three compact galaxy groups, HCGs 16, 22, and 42, which describe a sequence in terms of gas richness, from space- (Swift, HST, Spitzer) an…

astro-ph.CO2012★ 31 cited

Examining the Role of Environment in a Comprehensive Sample of Compact Groups

Lisa May Walker, Kelsey E. Johnson, Sarah C. Gallagher +2

(Abridged) Compact groups, with their high number densities, small velocity dispersions, and an interstellar medium that has not been fully processed, provide a local analog to con…

astro-ph.CO2011★ 13 cited

The merger history, AGN and dwarf galaxies of Hickson Compact Group 59

I. S. Konstantopoulos, S. C. Gallagher, K. Fedotov +16

Compact group galaxies often appear unaffected by their unusually dense environment. Closer examination can, however, reveal the subtle, cumulative effects of multiple galaxy inter…

astro-ph.CO2010★ 51 cited

Mid-Infrared Evidence for Accelerated Evolution in Compact Group Galaxies

Lisa May Walker, Kelsey E. Johnson, Sarah C. Gallagher +5

Compact galaxy groups are at the extremes of the group environment, with high number densities and low velocity dispersions that likely affect member galaxy evolution. To explore t…

astro-ph.CO2009

Mid-Infrared Evidence for Accelerated Evolution in Compact Group Galaxies

Lisa May Walker, Kelsey E. Johnson, Sarah C. Gallagher +4

We find evidence for accelerated evolution in compact group galaxies from the distribution in mid-infrared colorspace of 42 galaxies from 12 Hickson Compact Groups (HCGs) compared…