2001A&A...369L..29S


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.25CET09:11:32

2001A&A...369L..29S - Astronomy and Astrophysics, volume 369, L29-32 (2001/4-2)

Discovery of pulsations from the Be/X-ray binary RX J0101.3-7211 in the SMC by XMM-Newton.

SASAKI M., HABERL F., KELLER S. and PIETSCH W.

Abstract (from CDS):

We report pulsations in the X-ray flux of RX J0101.3-7211 in the Small Magellanic Cloud (SMC) with a period of (455±2)s in XMM-Newton EPIC-PN data. The X-ray spectrum can be described by a power-law with a photon index of 0.6±0.1. Timing analysis of ROSAT PSPC and HRI archival data confirms the pulsations and indicates a period increase of ∼5s since 1993. RX J0101.3-7211 varied in brightness during the ROSAT observations with timescales of years with a maximum unabsorbed flux of 6x10–13erg/cm2/s (0.1-2.4keV). The flux during the XMM-Newton observation in the ROSAT band was lower than during the faintest ROSAT detection. The unabsorbed luminosity derived from the EPIC-PN spectrum is 2x1035erg/s (0.2-10.0keV) assuming a distance of 60kpc. Optical spectra of the proposed counterpart taken at the 2.3m telescope of MSSSO in Australia in August 2000 show strong Hα emission and indicate a Be star. The X-ray and optical data confirm RX J0101.3-7211 as a Be/X-ray binary pulsar in the SMC.

Abstract Copyright:

Journal keyword(s): Stars: binaries: general - stars: emission-line, Be - galaxies: Magellanic Clouds - X-rays: stars

Simbad objects: 5

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Number of rows : 5

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 LIN 139 HXB 00 49 42.0074565521 -73 23 14.677257632 14.09 15.00 14.98   14.70 O9.5-B0.5III-V 66 0
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9559 1
3 [MA93] 1257 HXB 01 01 20.6637174159 -72 11 18.966252559 14.41 15.36 15.49   15.53 B0.5-B2IV-V 45 0
4 SNR B0102-72.3 SNR 01 04 01.2 -72 01 52           ~ 346 1
5 SK 160 HXB 01 17 05.1447530244 -73 26 36.015353425 12.23 13.00 13.15   13.17 O9.7Ia+ 801 0

    Equat.    Gal    SGal    Ecl

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2020.10.25-09:11:32

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