IGR J17463-2854, a possible symbiotic binary system in the galactic center region

Abstract

This paper is devoted to determining the nature of the hard X-ray source IGR J17463-2854 located toward the Galactic bulge. Using data from the INTEGRAL and Chandra X-ray observatories, we show that five point X-ray sources with approximately identical fluxes in the 2-10 keV energy band are detected in the error circle of the object under study. In addition, significant absorption at low energies has been detected in the spectra of all these sources. Based on data from the VVV (VISTA/ESO) infrared Galactic Bulge Survey, we have unambiguously identified three of the five sources, determined the J, H and K magnitudes of the corresponding stars, and obtained upper limits on the fluxes for the remaining two sources. Analysis of the color-magnitude diagrams has shown that one of these objects most likely belongs to a class of rarely encountered objects, symbiotic binary systems (several tens are known with certainty), i.e., low-mass binary systems consisting of a white dwarf and a red giant. Note that all our results were obtained using improved absorption values and an extinction law differing in this direction from the standard one.

GRO J1750–27: A neutron star far behind the Galactic Center switching into the propeller regime

“…This, of course, requires a knowledge of an extinction law in the direction to the source. It is especially important, taking into account preliminary estimates of the distance to GRO J1750−27 as > 12 kpc (Scott et al 1997;Shaw et al 2009) and a number of previous publications, where it was shown that the extinction law for the central regions of the Galaxy might significantly differ from the standard one (see, e.g., Nishiyama et al 2009;Revnivtsev et al 2010;Karasev et al 2010Karasev et al , 2015Alonso-García et al 2017;Karasev & Lutovinov 2018). For the following analysis we used the absorption law and extinction ratios in different filters, obtained by Alonso-García et al (2017) from the VVV survey data for the Galactic Center direction.…”

Determining the Absolute Magnitudes of Galactic-Bulge Red Clump Giants in the Z and Y Filters of the Vista Sky Surveys and the IRAC Filters of the Spitzer Sky Surveys

“…Our results are based on the use of narrow vertical strips to determine the colors of RCGs in different filters and the extinction law. This method was proposed by Karasev et al (2015) and developed further in this paper.…”

“…First of all, note that bulge RCGs have been comprehensively studied previously, and the general approaches are well known (see, e.g., Paczynski and Stanek 1998;Dutra et al 2003;Revnivtsev et al 2010;Gontcharov and Bajkova 2013). This section is based on the method proposed by Karasev et al (2015) to determine the local extinction by in-vestigating the distribution of RCGs in narrow strips perpendicular to the Galactic plane. The strip width is 2 , which allows the scatter of distances to RCGs due to the variability of the bulge structure along the Galactic longitude to be minimized (Nishiyama et al 2009;Gonzalez et al 2012).…”

INTEGRAL view on Cataclysmic Variables and Symbiotic Binaries

“…After the aforementioned compilation by [114], [115] reported the first detection of the X-ray emission from eight more symbiotic systems using Swif t/XRT, thus bringing the total number of known symbiotic systems as X-ray sources to 33 (see also [38]). 561213) [120], IGR J17164-3803 [121] and IGR J17463-2854 [122].…”