117 citations · 819 across the 29 of their papers we have counts for
29 papers
Three Ultraluminous X-ray Sources Hosted by Globular Clusters in NGC 1316
Kristen C. Dage, Arunav Kundu, Erica Thygesen +8
We have identified three ultraluminous X-ray sources (ULXs) hosted by globular clusters (GCs) within NGC 1316's stellar system. These discoveries bring the total number of known UL…
X-Ray Spectroscopy of Newly Identified ULXs Associated With M87's Globular Cluster Population
Kristen C. Dage, Stephen E. Zepf, Erica Thygesen +5
We have identified seven ultraluminous X-ray sources (ULXs) which are coincident with globular cluster candidates (GCs) associated with M87. ULXs in the old GC environment represen…
Slow Decline and Rise of the Broad [OIII] Emission Line in Globular Cluster Black Hole Candidate RZ2109
Kristen C. Dage, Stephen E. Zepf, Arash Bahramian +6
RZ2109 is the first of several extragalactic globular clusters shown to host an ultraluminous X-ray source. RZ2109 is particularly notable because optical spectroscopy shows it has…
X-Ray Spectral Variability of Ultraluminous X-Ray Sources in Extragalactic Globular Clusters
Kristen C. Dage, Stephen E. Zepf, Mark B. Peacock +4
A number of ultraluminous X-ray sources (ULXs) are physically associated with extragalactic globular clusters (GCs). We undertake a systematic X-ray analysis of eight of the bright…
Optical spectroscopy and demographics of redback millisecond pulsar binaries
Jay Strader, Samuel J. Swihart, Laura Chomiuk +12
We present the first optical spectroscopy of five confirmed (or strong candidate) redback millisecond pulsar binaries, obtaining complete radial velocity curves for each companion…
Hubble Space Telescope FUV observations of M31's globular clusters suggest a spatially homogeneous helium-enriched sub population
Mark Peacock, Stephen Zepf, Thomas Maccarone +4
We present high spatial resolution, far ultraviolet (FUV) F140LP observations of 12 massive globular clusters in M 31 obtained using the ACS/SBC on the Hubble Space Telescope (HST)…