2016A&A...591A..87C


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.23CET00:48:36

2016A&A...591A..87C - Astronomy and Astrophysics, volume 591A, 87-87 (2016/7-1)

Multiwavelength study of the fast rotating supergiant high-mass X-ray binary IGR J16465-4507.

CHATY S., LEREUN A., NEGUERUELA I., COLEIRO A., CASTRO N., SIMON-DIAZ S., ZURITA HERAS J.A., GOLDONI P. and GOLDWURM A.

Abstract (from CDS):

Context. Since its launch, the X-ray and γ-ray observatory INTEGRAL satellite has revealed a new class of high-mass X-ray binaries (HMXB) displaying fast flares and hosting supergiant companion stars. Optical and infrared (OIR) observations in a multi-wavelength context are essential to understand the nature and evolution of these newly discovered celestial objects.
Aims. The goal of this multiwavelength study (from ultraviolet to infrared) is to characterise the properties of IGR J16465-4507, to confirm its HMXB nature and that it hosts a supergiant star.
Methods. We analysed all OIR, photometric and spectroscopic observations taken on this source, carried out at ESO facilities.
Results. Using spectroscopic data, we constrained the spectral type of the companion star between B0.5 and B1 Ib, settling the debate on the true nature of this source. We measured a high rotation velocity of v=320±8km/s from fitting absorption and emission lines in a stellar spectral model. We then built a spectral energy distribution from photometric observations to evaluate the origin of the different components radiating at each energy range.
Conclusions. We finally show that, having accurately determined the spectral type of the early-B supergiant in IGR J16465-4507, we firmly support its classification as an intermediate supergiant fast X-ray transient (SFXT).

Abstract Copyright: © ESO, 2016

Journal keyword(s): stars: abundances - stars: rotation - supergiants - infrared: stars - X-rays: individuals: IGR J16465-4507 - X-rays: binaries

CDS comments: Table 1 standard stars SJ NNNN not identified.

Simbad objects: 10

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Number of rows : 10

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 * k Ori PM* 06 16 26.6187785712 +12 16 19.790924635   5.46   4.8   F5V 122 0
2 HD 306414 s*b 11 21 46.8237210288 -59 51 47.969821291 10.12 10.69 10.23 10.00   B1Ia 132 0
3 HD 143885 PM* 16 05 05.4556088595 -48 49 40.539439549   9.948 9.283     G2V 24 0
4 IGR J16318-4848 HXB 16 31 48.3102815892 -48 49 00.664215918           ~ 155 0
5 PG 1633+099 HS* 16 35 24.0242205151 +09 47 49.892841991 13.215 14.205 14.396 14.481 14.609 sdB 104 0
6 HD 150248 PM* 16 41 49.7946763722 -45 22 07.509805896   7.66 7.03     G3V+? 71 0
7 2MASS J16463526-4507045 HXB 16 46 35.2592332854 -45 07 04.609816032   15.2       O9.5Ia 87 1
8 HD 155755 * 17 15 30.6442844775 -42 46 41.008505665   9.17 8.56     G2V 23 0
9 CD-44 12736 PM* 18 36 25.9487430436 -44 18 36.919462094   10.83 10.22     G0 192 0
10 IGR J18483-0311 HXB 18 48 17.2064881183 -03 10 16.876608322 23.702 25.162 21.884 17.888 15.88 B0.5Ia 108 0

    Equat.    Gal    SGal    Ecl

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2020.01.23-00:48:36

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