SIMBAD references

2020ApJ...901...57B - Astrophys. J., 901, 57-57 (2020/September-3)

The MAVERIC survey: Chandra/ACIS catalog of faint X-ray sources in 38 Galactic globular clusters.

BAHRAMIAN A., STRADER J., MILLER-JONES J.C.A., CHOMIUK L., HEINKE C.O., MACCARONE T.J., POOLEY D., SHISHKOVSKY L., TUDOR V., ZHAO Y., LI K.L., SIVAKOFF G.R., TREMOU E. and BUCHNER J.

Abstract (from CDS):

Globular clusters host a variety of lower-luminosity (LX < 1035 erg s–1) X-ray sources, including accreting neutron stars (NSs) and black holes (BHs), millisecond pulsars (MSPs), cataclysmic variables, and chromospherically active binaries. In this paper, we provide a comprehensive catalog of more than 1100 X-ray sources in 38 Galactic globular clusters (GCs) observed by the Chandra X-ray Observatory's Chandra/ACIS detector. The targets are selected to complement the MAVERIC survey's deep radio continuum maps of Galactic GCs. We perform photometry and spectral analysis for each source, determine a best-fit model, and assess the possibility of it being a foreground or background source based on its spectral properties and location in the cluster. We also provide basic assessments of variability. We discuss the distribution of X-ray binaries in GCs and their X-ray luminosity function, and we carefully analyze systems with LX > 1033 erg s–1. Among these moderately bright systems, we discover a new source in NGC 6539 that may be a candidate accreting stellar-mass BH or a transitional MSP. We show that quiescent NS low-mass X-ray binaries in GCs may spend ∼2% of their lifetimes as transitional MSPs in their active (LX > 1033 erg s–1) state. Finally, we identify a substantial underabundance of bright (LX > 1033 erg s–1) intermediate polars in GCs compared to the Galactic field, in contrast with the literature of the past two decades.

Abstract Copyright: © 2020. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Globular star clusters - Low-mass x-ray binary stars - Neutron stars - Astrophysical black holes - Stellar accretion disks - Celestial objects catalogs

Nomenclature: Table A1: [BSM2020b] CXOU JHHMMSS.ss+DDMMSS.s N=1667.

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 71

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2021.07.26-02:38:49

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