2008A&A...492..163R


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.22CEST00:01:08

2008A&A...492..163R - Astronomy and Astrophysics, volume 492, 163-166 (2008/12-2)

IGR J18483-0311: a new intermediate supergiant fast X-ray transient.

RAHOUI F. and CHATY S.

Abstract (from CDS):

IGR J18483-0311 is a high-mass X-ray binary recently discovered by INTEGRAL. Its periodic fast X-ray transient activity and its position in the Corbet diagram - although uncertain - led to the conclusion that the source was probably a Be/X-ray binary (BeXB), even if a supergiant fast X-ray transient (SFXT) nature could not be excluded. We aimed at identifying the companion star of IGR J18483-0311 and discriminate between a BeXB and a SFXT nature for this source. Optical and near-infrared photometry, as well as near-infrared spectroscopy of the companion star were performed to identify its spectral type. We also assembled and fitted its broad-band spectral energy distribution to derive its physical parameters. We show that the companion star of IGR J18483-0311 is an early-B supergiant, probably a B0.5a, and that its distance is about 3-4kpc. The early-B supergiant nature of its companion star, as well as its fast X-ray transient activity indicate that IGR J18483-0311 has an SFXT nature. Nevertheless, the long duration and the periodicity of its outbursts, as well as its high level of quiescence, are consistent with IGR J18483-0311 being an intermediate SFXT, in-between classical supergiant X-ray binaries (SGXBs) characterised by small and circular orbits, and classical SFXTs with large and eccentric orbits.

Abstract Copyright:

Journal keyword(s): infrared: stars - X-rays: binaries - stars: individual: IGR J18483-0311 - binaries: general - supergiants - stars: fundamental parameters

CDS comments: Paragraph 2.1 The four photometric standard stars are probably misprint for PG 1657+078, A, B, C.

Simbad objects: 8

goto Full paper

goto View the reference in ADS

Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 GSC 00976-01862 * 16 59 31.9810249603 +07 42 07.331573380 15.460 15.421 14.724 14.307 13.886 ~ 3 0
2 PG 1657+078 HS* 16 59 32.2152633688 +07 43 31.413989790 13.919 14.877 15.019 15.098 15.115 sdB 51 0
3 GSC 00976-01857 * 16 59 33.2091407154 +07 42 19.403350946 15.835 15.100 14.032 13.463 12.927 ~ 5 0
4 GSC 00976-01656 * 16 59 35.277 +07 42 26.64 16.444 16.062 15.225 14.721 14.260 ~ 4 0
5 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12263 0
6 IGR J18483-0311 HXB 18 48 17.2064881183 -03 10 16.876608322 23.702 25.162 21.884 17.888 15.88 B0.5Ia 111 0
7 NAME Sgr Arm PoG 19 00 -30.0           ~ 547 1
8 HD 184317 PM* 19 34 26.0240744280 -12 55 36.043793701   8.35 7.72     G3V 30 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2008A&A...492..163R and select 'bookmark this link' or equivalent in the popup menu


2021.06.22-00:01:08

© Université de Strasbourg/CNRS

    • Contact