279 citations · 1.7k across the 51 of their papers we have counts for
14 papers · 1 filter
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…
Modeling the High-Energy Ionizing Output from Simple Stellar and X-ray Binary Populations
Kristen Garofali, Antara R. Basu-Zych, Benjamin D. Johnson +9
We present a methodology for modeling the joint ionizing impact due to a "simple X-ray population" (SXP) and its corresponding simple stellar population (SSP), where "simple" refer…
X-ray Binary Luminosity Function Scaling Relations in Elliptical Galaxies: Evidence for Globular Cluster Seeding of Low-Mass X-ray Binaries in Galactic Fields
Bret D. Lehmer, Andrew P. Ferrell, Keith Doore +10
We investigate X-ray binary (XRB) luminosity function (XLF) scaling relations for Chandra detected populations of low-mass XRBs (LMXBs) within the footprints of 24 early-type galax…
X-ray Binary Luminosity Function Scaling Relations for Local Galaxies Based on Subgalactic Modeling
Bret D. Lehmer, Rafael T. Eufrasio, Panayiotis Tzanavaris +7
We present new Chandra constraints on the X-ray luminosity functions (XLFs) of X-ray binary (XRB) populations, and their scaling relations, for a sample of 38 nearby galaxies (D =…
Cosmic evolution of supermassive black holes: A view into the next two decades
Francesca Civano, Nico Cappelluti, Ryan Hickox +38
The discoveries made over the past 20 years by Chandra and XMM-Newton surveys in conjunction with multiwavelength imaging and spectroscopic data available in the same fields have s…
Astro2020: Hot Drivers of Stellar Feedback from 10 to 10,000 pc
Edmund Hodges-Kluck, Laura A. Lopez, Mihoko Yukita +5
Stellar feedback -- stars regulating further star formation through the injection of energy and momentum into the interstellar medium -- operates through a complex set of processes…
The physics and astrophysics of X-ray outflows from Active Galactic Nuclei
Sibasish Laha, Randall Smith, Panayiotis Tzanavaris +20
The highly energetic outflows from Active Galactic Nuclei detected in X-rays are one of the most powerful mechanisms by which the central supermassive black hole (SMBH) interacts w…
Cosmic Pathways for Compact Groups in the Milli-Millennium Simulation
P. Tzanavaris, S. C. Gallagher, S. Ali +3
We detected 10 compact galaxy groups (CGs) at in the semi-analytic galaxy catalog of Guo et al. (2011) for the milli-Millennium Cosmological Simulation (sCGs in mGuo2010a). W…
The Occurrence of Compact Groups of Galaxies Through Cosmic Time
Christopher D. Wiens, Trey V. Wenger, Panayiotis Tzanavaris +3
We use the outputs of a semi-analytical model of galaxy formation run on the Millennium Simulation to investigate the prevalence of 3D compact groups (CGs) of galaxies from $z = 11…
On the Spatially Resolved Star-Formation History in M51 II: X-ray Binary Population Evolution
B. D. Lehmer, R. T Eufrasio, L. Markwardt +7
We present a new technique for empirically calibrating how the X-ray luminosity function (XLF) of X-ray binary (XRB) populations evolves following a star-formation event. We first…
On the Spatially Resolved Star Formation History in M51 I: Hybrid UV+IR Star Formation Laws and IR Emission from Dust Heated by Old Stars
R. T. Eufrasio, B. D. Lehmer, A. Zezas +10
We present Lightning, a new spectral energy distribution (SED) fitting procedure, capable of quickly and reliably recovering star formation history (SFH) and extinction parameters.…
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…
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…
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…