230 citations · 2k across the 69 of their papers we have counts for
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Chemical enrichment of the Perseus cluster core seen by XRISM/Resolve
XRISM Collaboration, Marc Audard, Hisamitsu Awaki +143
The intracluster medium (ICM) is rich in chemical elements, produced by core-collapse (SNcc) and Type Ia supernovae (SNIa) over the last 12 Gyr. Whereas cluster outskirts are…
A Fast, Hot Wind from a Nuclear Starburst
XRISM Collaboration, Marc Audard, Hisamitsu Awaki +137
Galaxies with intense star formation often host multiphase, galaxy-scale winds powered by supernovae and fast stellar winds. These are strong enough to disrupt the star-forming int…
A XRISM/Resolve view of the dynamics in the hot gaseous atmosphere of M87
XRISM Collaboration, M. Audard, H. Awaki +138
The XRISM/Resolve microcalorimeter directly measured the gas velocities in the core of the Virgo Cluster, the closest example of AGN feedback in a cluster. This proximity allows us…
Comparing XRISM cluster velocity dispersions with predictions from cosmological simulations: are feedback models too ejective?
XRISM Collaboration, Marc Audard, Hisamitsu Awaki +147
The dynamics of the intra-cluster medium (ICM), the hot plasma that fills galaxy clusters, are shaped by gravity-driven cluster mergers and feedback from supermassive black holes (…
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…
Elevated Hot Gas and High-Mass X-ray Binary Emission in Low Metallicity Galaxies: Implications for Nebular Ionization and Intergalactic Medium Heating in the Early Universe
Bret D. Lehmer, Rafael T. Eufrasio, Antara Basu-Zych +4
High-energy emission associated with star formation has been proposed as a significant source of interstellar medium (ISM) ionization in low-metallicity starbursts and an important…
A Chandra Virgo cluster survey of spiral galaxies. I. Introduction to the survey and a new ULX sample
Roberto Soria, Mari Kolehmainen, Alister W. Graham +10
We present an analysis of the ultraluminous X-ray source (ULX) population in 75 Virgo cluster late-type galaxies, including all those with a star formation rate >~ 1 M_{sun}/yr and…
A 60-kpc Galactic Wind Cone in NGC 3079
Edmund Hodges-Kluck, Mihoko Yukita, Ryan Tanner +3
Galactic winds are associated with intense star formation and AGNs. Depending on their formation mechanism and velocity they may remove a significant fraction of gas from their hos…
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 =…
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…
NuSTAR Hard X-ray View of Low-luminosity Active Galactic Nuclei: High-energy Cutoff and Truncated Thin Disk
George Younes, Andrew Ptak, Luis C. Ho +5
We report the analysis of simultaneous XMM-Newton+NuSTAR observations of two low-luminosity Active Galactic Nuclei (LLAGN), NGC 3998 and NGC 4579. We do not detect any significant…
Black Holes and Neutron Stars in Nearby Galaxies: Insights from NuSTAR
Neven Vulic, Ann E. Hornschemeier, Daniel R. Wik +8
Nearby galaxy surveys have long classified X-ray binaries (XRBs) by the mass category of their donor stars (high-mass and low-mass). The NuSTAR observatory, which provides imaging…
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.…
Identification of the Hard X-ray Source Dominating the E > 25 keV Emission of the Nearby Galaxy M31
M. Yukita, A. Ptak, A. E. Hornschemeier +15
We report the identification of a bright hard X-ray source dominating the M31 bulge above 25 keV from a simultaneous NuSTAR-Swift observation. We find that this source is the count…
A Hard X-ray Study of the Normal Star-Forming Galaxy M83 with NuSTAR
M. Yukita, A. E. Hornschemeier, B. D. Lehmer +19
We present results from sensitive, multi-epoch NuSTAR observations of the late-type star-forming galaxy M83 (d=4.6 Mpc), which is the first investigation to spatially resolve the h…
The Evolution of Normal Galaxy X-ray Emission Through Cosmic History: Constraints from the 6 Ms Chandra Deep Field-South
B. D. Lehmer, A. R. Basu-Zych, S. Mineo +17
We present measurements of the evolution of normal-galaxy X-ray emission from 0-7 using local galaxies and galaxy samples in the 6 Ms Chandra Deep Field-South (CDF-S) s…
Exploring the Overabundance of ULXs in Metal- and Dust-poor Local Lyman Break Analogs
Antara R. Basu-Zych, Bret Lehmer, Tassos Fragos +4
We have studied high mass X-ray binary (HMXB) populations within two low-metallicity, starburst galaxies, Haro 11 and VV 114. These galaxies serve as analogs to high-redshift (z>2)…
The 0.3-30 keV Spectra of Powerful Starburst Galaxies: NuSTAR and Chandra Observations of NGC 3256 and NGC 3310
B. D. Lehmer, J. B. Tyler, A. E. Hornschemeier +13
We present nearly simultaneous Chandra and NuSTAR observations of two actively star-forming galaxies within 50 Mpc: NGC 3256 and NGC 3310. Both galaxies are detected by both Chandr…
A Focused, Hard X-ray Look at Arp 299 with NuSTAR
A. Ptak, A. Hornschemeier, A. Zezas +19
We report on simultaneous observations of the local starburst system Arp 299 with NuSTAR and Chandra, which provides the first resolved images of this galaxy up to energies of ~ 45…
The X-ray Luminosity Functions of Field Low Mass X-ray Binaries in Early-Type Galaxies: Evidence for a Stellar Age Dependence
B. D Lehmer, M. Berkeley, A. Zezas +11
We present direct constraints on how the formation of low-mass X-ray binary (LMXB) populations in galactic fields depends on stellar age. In this pilot study, we utilize Chandra an…
Extra-Nuclear Starbursts: Young Luminous Hinge Clumps in Interacting Galaxies
Beverly J. Smith, Roberto Soria, Curtis Struck +3
Hinge clumps are luminous knots of star formation near the base of tidal features in some interacting galaxies. We use archival Hubble Space Telescope UV/optical/IR images and Chan…
X-Ray Emission from the Supergiant Shell in IC 2574
Mihoko Yukita, Douglas A. Swartz
The M81 group member dwarf galaxy IC 2574 hosts a supergiant shell of current and recent star-formation activity surrounding a 1000 x 500 pc hole in the ambient Hi gas distribution…