2005A&A...442..925B


C.D.S. - SIMBAD4 rel 1.7 - 2019.09.23CEST23:01:33

2005A&A...442..925B - Astronomy and Astrophysics, volume 442, 925-928 (2005/11-2)

The recurrent ultra-luminous X-ray transient [LB2005] NGC 253 ULX1.

BAUER M. and PIETSCH W.

Abstract (from CDS):

We present the results of ROSAT and XMM-Newton observations of the recurrent ultraluminous X-ray source (ULX) NGC 253 ULX1. This transient is one of the few ULXs that was detected during several outbursts. The luminosity reached 1.4x1039erg/s and 0.5x1039erg/s in the detections by ROSAT and XMM-Newton, respectively, indicating a black hole X-ray binary (BHXRB) with a mass of the compact object of ≥11M. In the ROSAT detection NGC 253 ULX1 showed significant variability, whereas the luminosity was constant in the detection from XMM-Newton. The XMM-Newton EPIC spectra are well-fit by a bremsstrahlung model (kT=2.24keV, NH=1.74x1020cm–2), which can be used to describe a comptonized plasma. No counterpart was detected in the optical I, R, B, NUV and FUV bands to limits of 22.9, 24.2, 24.3, 22 and 23mag, respectively, pointing at a XRB with a low mass companion.

Abstract Copyright:

Journal keyword(s): X-rays: stars

Simbad objects: 9

goto Full paper

goto View the reference in ADS

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 - 2019
#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 2847 2
2 [LB2005] NGC 253 X20 UX? 00 48 19.99 -25 10 09.8           ~ 2 0
3 X LMC X-3 HXB 05 38 56.6325045489 -64 05 03.321118015   17 17.2     B2.5Ve 624 0
4 NGC 4038 GiP 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1259 1
5 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1524 0
6 NGC 4039 GiP 12 01 53.8 -18 53 06   11.08   9.77   ~ 1120 1
7 [JRW2005b] 122 UX? 14 03 32.38 +54 21 03.0   21.13       ~ 95 0
8 V* V4134 Sgr LXB 17 58 40.0 -33 48 27   19.20 18.5     ~ 159 0
9 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 3841 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2005A&A...442..925B and select 'bookmark this link' or equivalent in the popup menu


2019.09.23-23:01:33

© Université de Strasbourg/CNRS

    • Contact