SIMBAD references

2016ApJ...821...54S - Astrophys. J., 821, 54-54 (2016/April-2)

X-ray sources in the dwarf spheroidal galaxy Draco.

SONBAS E., RANGELOV B., KARGALTSEV O., DHUGA K.S., HARE J. and VOLKOV I.

Abstract (from CDS):

We present the spectral analysis of an 87 ks XMM-Newton observation of Draco, a nearby dwarf spheroidal galaxy. Of the approximately 35 robust X-ray source detections, we focus our attention on the brightest of these sources, for which we report X-ray and multiwavelength parameters. While most of the sources exhibit properties consistent with active galactic nuclei, few of them possess the characteristics of low-mass X-ray binaries (LMXBs) and cataclysmic variable (CVs). Our analysis places constraints on the population of X-ray sources with LX > 3 x 1033 erg s-1 in Draco, suggesting that there are no actively accreting black hole and neutron star binaries. However, we find four sources that could be quiescent state LMXBs/CVs associated with Draco. We also place constraints on the central black hole luminosity and on a dark matter decay signal around 3.5 keV.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): dark matter - galaxies: dwarf - galaxies: individual: Draco dwarf - novae, cataclysmic variables - stars: carbon - X-rays: binaries

VizieR on-line data: <Available at CDS (J/ApJ/821/54): table3.dat>

Simbad objects: 40

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2021.05.15-10:11:57

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