48 citations · 215 across the 11 of their papers we have counts for
11 papers
Characterizing the star cluster populations in Stephan's Quintet using HST and JWST observations
P. Aromal, S. C. Gallagher, K. Fedotov +14
Stephan's Quintet (SQ) is a local compact galaxy group system that exhibits significant star formation activity. A history of tidal interactions between its four member galaxies an…
A Tale of Two Tails: Exploring Stellar Populations in the Tidal Tails of NGC 3256
Michael Rodruck, Iraklis Konstantopoulos, Karen Knierman +7
We have developed an observing program using deep, multiband imaging to probe the chaotic regions of tidal tails in search of an underlying stellar population, using NGC 3256's 400…
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…
A View of Point Sources in Hickson Compact Groups: High AGN fraction but a dearth of strong AGNs
P. Tzanavaris, S. C. Gallagher, A. E. Hornschemeier +6
We present X-ray point source catalogs for 9 Hickson Compact Groups (HCGs, 37 galaxies) at distances Mpc. We perform detailed X-ray point source detection and p…
Shocks and Star Formation in Stephan's Quintet. I. Gemini Spectroscopy of Hα-bright knots
I. S. Konstantopoulos, P. N. Appleton, P. Guillard +8
We present a Gemini-GMOS spectroscopic study of HST-selected Hα-emitting regions in Stephan's Quintet (HCG 92), a nearby compact galaxy group, with the aim of disentangling the pro…
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…