2008A&A...489.1239S


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.21CEST23:33:16

2008A&A...489.1239S - Astronomy and Astrophysics, volume 489, 1239-1242 (2008/10-3)

The 2007 outburst of the X-ray binary XTE J1856+053.

SALA G., GREINER J., AJELLO M. and PRIMAK N.

Abstract (from CDS):

On 28 February 2007 a new outburst of the previously known transient source XTE J1856+053 was detected with RXTE/ASM. We present here the results of an XMM-Newton (0.5-10.0keV) Target of Opportunity observation performed on 14 March 2007, aimed at constraining the mass of the compact object in this X-ray binary and determining its main properties. The EPIC-pn camera was used in Timing mode and its spectrum fit together with the RGS data. IR observations with GROND at the 2.2 m telescope in La Silla provide further information on the system. The X-ray light curve shows that both the 1996 and the 2007 outbursts had two peaks. The X-ray spectrum is well fit with a thermal accretion disk model, with kTin=0.75(±0.01)keV and foreground absorption NH=4.5(±0.1)x1022cm–2. The low disk temperature favours a black-hole as accreting object, with an estimated mass in the range 1.3-4.2M. From the IR upper limits we argue that XTE J1856+053 is a low mass X-ray binary. We estimate the orbital period of the system to be between 3 and 12h.

Abstract Copyright:

Journal keyword(s): X-rays: binaries - stars: binaries: close - X-rays: individual: XTE J1856+053

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 [KRL2007b] 312 LXB 18 17 43.537 -33 01 07.80           ~ 135 0
2 INTREF 948 LXB 18 56 42.920 +05 18 34.30           ~ 41 0
3 NAME Galactic Ridge ? ~ ~           ~ 407 1

    Equat.    Gal    SGal    Ecl

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2019.10.21-23:33:16

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