2012A&A...542A.120N


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.21CET13:09:02

2012A&A...542A.120N - Astronomy and Astrophysics, volume 542A, 120-120 (2012/6-1)

Chandra, Swift, and HST studies of the CXOM31 J004253.1+411422. Very bright X-ray transient in M31.

NOORAEE N., CALLANAN P.J., BARNARD R., GARCIA M.R., MURRAY S.S. and MOSS A.

Abstract (from CDS):

A very bright transient X-ray source, CXOM31 J004253.1+411422, was found by Chandra/HRC in the M31 bulge. We present Chandra, Swift, and Hubble Space Telescope (HST) observations of this source. Since this source is the brightest known X-ray transient in M31, we want to study its nature with Chandra and Swift. Comparing the results of Galactic transients and M31 transients can give a better understanding of the nature of extragalactic binaries. We fitted disk black body and power law models to X-ray data from Chandra and Swift. Follow-up HST/ACS imaging during and after the outburst revealed a transient optical counterpart. Our HST observations show an optical counterpart with optical magnitude B=23.91±0.08. Using the empirical relations between X-ray luminosity and absolute visual magnitude, we estimate the orbital period of the system is about ∼15h. Our optical identification of the brightest X-ray transient so far discovered in M31 suggests an orbital period of about 15h. The decay light curve is consistent with previous models of X-ray novae outbursts.

Abstract Copyright:

Journal keyword(s): X-rays: general - X-rays: binaries - galaxies: groups: individual: M 31

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 - 2020
#notes
1 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10588 1
2 CXOM31 J004253.1+411422 ULX 00 42 53.15 +41 14 22.9           ~ 24 0
3 V* KV UMa HXB 11 18 10.7922353051 +48 02 12.319175505     12.25     K5V-M1V 707 0

    Equat.    Gal    SGal    Ecl

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2019.11.21-13:09:02

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