2009A&A...508..895K


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.08CET19:56:11

2009A&A...508..895K - Astronomy and Astrophysics, volume 508, 895-900 (2009/12-3)

Optical and X-ray outbursts of Be/X-ray binary system SAX J2103.5+4545.

KIZILOGLU U., OZBILGEN S., KIZILOGLU N. and BAYKAL A.

Abstract (from CDS):

The main goal of this study is to investigate the relationship between the optical and X-ray behaviours of the Be/X-ray binary system SAX J2103.5+4545. We present the relations between the Hα equivalent width, optical brightness and X-ray flux of the system, by analysing the optical photometric and spectroscopic observations together with the X-ray observations. The X-ray outburst of the system occurred just after the optical outburst. The nearly symmetric Hα emission line profiles observed during the beginning of the optical outburst turn into asymmetric profiles with increased EW values during the dissipation of the Be disc. A correlation between the Hα emission line strength and the X-ray flux was found. The Hα line indicates the existence of an equatorial disc around the Be star. The Hα line changed from emission to absorption during the observation period. The observed double peaked HeI emission lines might come from the accretion disc of neutron star which is temporarily formed at the time of X-ray outburst.

Abstract Copyright:

Journal keyword(s): stars: emission-line, Be - stars: early-type - stars: variables: general - X-rays: binaries

CDS comments: Table 1 Stars 1 to 3 are respectively USNO-A2.0 1350-13353370, USNO-A2.0 1350-13354224 and USNO-A2.0 1350-13363020 in Simbad.

Simbad objects: 9

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Number of rows : 9

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 V* V635 Cas HXB 01 18 31.9704429246 +63 44 33.071137750 17.05 16.64 15.19 14.34 13.22 B0.2Ve 673 0
2 V* BQ Cam HXB 03 34 59.9116460415 +53 10 23.296351781   17.16 15.42 14.26 13.04 O8.5Ve 411 1
3 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 100 0
4 HD 245770 HXB 05 38 54.5749436467 +26 18 56.839215267 9.30 9.84 9.39 8.77 8.30 O9/B0III/Ve 885 0
5 V* V2246 Cyg HXB 20 32 15.2744631713 +37 38 14.839930326   22.16 19.41 17.32 15.18 B0Ve 383 0
6 USNO-A2.0 1350-13353370 * 21 03 20.0953981660 +45 45 13.892372495   14.9   12.1   ~ 1 0
7 USNO-A2.0 1350-13354224 * 21 03 21.997 +45 44 55.30   15.5   14.3   ~ 1 0
8 GSC 03588-00834 HXB 21 03 35.7101268891 +45 45 05.568943629   15.34 14.20 13.49 12.75 B0Ve 153 0
9 USNO-A2.0 1350-13363020 * 21 03 40.3171609659 +45 46 22.472383041   13.6   13.3   ~ 1 0

    Equat.    Gal    SGal    Ecl

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2021.03.08-19:56:11

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