2010A&A...522A.107R


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST20:49:42

2010A&A...522A.107R - Astronomy and Astrophysics, volume 522, A107-107 (2010/11-1)

The optical counterpart to IGR J06074+2205: a Be/X-ray binary showing disc loss and V/R variability.

REIG P., ZEZAS A. and GKOUVELIS L.

Abstract (from CDS):

Current X-ray missions are regularly discovering new X/γ-ray sources, so identifying the counterparts of these high-energy sources at other wavelengths is important for determining their nature.In particular, optical observations are crucial in the study of X-ray binary populations in our Galaxy. The main goal of this work is to determine the properties of the optical counterpart to theINTEGRAL sourceIGR J06074+2205 and study its long-term optical variability. Although its nature as a high-mass X-ray binary has been suggested, little is known about its physical parameters. We have been monitoringIGR J06074+2205 since 2006 in the optical band. We present optical photometric BVRI and spectroscopic observations covering the wavelength band 4000-7000Å. The blue spectra allow us to determine the spectral type and luminosity class of the optical companion and the red spectra, together with the photometric magnitudes, were used to derive the colour excess E(B-V) and estimate the distance. We have carried out the first detailed optical study of the massive component in the high-mass X-ray binary IGR J06074+2205. We find that the optical counterpart to IGR J06074+2205 is a V=12.3 B0.5Ve star located at a distance of ∼4.5kpc. Monitoring of the Hα line reveals V/R variability and an overall decline in its equivalent width. The Hα line has been seen to revert from an emission to an absorption profile. We attribute this variability to global changes in the structure of the Be star's circumstellar disc that eventually led to the complete loss of the disc. The density perturbation that gives rise to the V/R variability vanishes when the disc becomes too small.

Abstract Copyright:

Journal keyword(s): supernovae: individual: IGR J06074+2205 - stars: emission-line, Be - stars: neutron - X-rays: binaries

Simbad objects: 18

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Number of rows : 18

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 V* V635 Cas HXB 01 18 31.9704429246 +63 44 33.071137750 17.05 16.64 15.19 14.34 13.22 B0.2Ve 661 0
2 EM* GGA 104 HXB 01 47 00.2121223849 +61 21 23.661992704 11.76 12.09 11.366 11.00 10.52 B1IIIe 168 0
3 V* BQ Cam HXB 03 34 59.9116460415 +53 10 23.296351781   17.16 15.42 14.26 13.04 O8.5Ve 398 1
4 V* X Per HXB 03 55 23.0778791365 +31 02 45.045745259 6.090 6.840 6.720     O9.5III 901 0
5 * eps Per bC* 03 57 51.2320472 +40 00 36.775143 1.71 2.71 2.89 2.96 3.14 B1.5III 494 0
6 LS V +44 17 HXB 04 40 59.3295352454 +44 31 49.258751047 11.02 11.42 10.73 10.28 9.76 B0.2Ve 97 0
7 V* CM Tau Psr 05 34 31.93830 +22 00 52.1758           ~ 4803 1
8 M 1 SNR 05 34 31.94 +22 00 52.2           ~ 5594 4
9 HD 36960 * 05 35 02.6807398 -06 00 07.303539 3.52 4.50 4.72     B1/2Ib/II 241 0
10 * c Ori Y*O 05 35 23.16427 -04 50 18.0881 3.46 4.40 4.59 4.67 4.85 B1V 193 0
11 HD 245770 HXB 05 38 54.5749436467 +26 18 56.839215267 9.30 9.84 9.39 8.77 8.30 O9/B0III/Ve 870 0
12 NVSS J060718+220452 Rad 06 07 18 +22 04.9           ~ 5 1
13 IGR J06074+2205 HXB 06 07 26.6120418797 +22 05 47.759512772   12.85 12.21 11.80 11.32 B0.5Ve 31 1
14 V* V572 Pup HXB 08 12 28.3576629560 -31 14 52.138780764 12.14 13.03 12.74 12.44   B0.2IVe 60 0
15 WRAY 15-793 HXB 11 20 57.1736252056 -61 55 00.165172193 12.81 13.06 12.12     O9.5III/Ve 172 0
16 HD 102567 Be* 11 48 00.0214627917 -62 12 24.900348094 8.24 9.06 9.00 9.62   O/Bne 287 0
17 V* V850 Cen HXB 13 01 17.0966951298 -61 36 06.636402972   15.6       B2Vne 273 0
18 GSC 03588-00834 HXB 21 03 35.7101268891 +45 45 05.568943629   15.34 14.20 13.49 12.75 B0Ve 147 0

    Equat.    Gal    SGal    Ecl

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2020.07.04-20:49:42

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