2013A&A...558A..74V


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.10CEST02:48:38

2013A&A...558A..74V - Astronomy and Astrophysics, volume 558A, 74-74 (2013/10-1)

Swift J053041.9-665426, a new Be/X-ray binary pulsar in the Large Magellanic Cloud.

VASILOPOULOS G., MAGGI P., HABERL F., STURM R., PIETSCH W., BARTLETT E.S. and COE M.J.

Abstract (from CDS):

We observed the newly discovered X-ray source SwiftJ053041.9-665426 in the X-ray and optical regime to confirm its proposed nature as a high mass X-ray binary. We obtained XMM-Newton and Swift X-ray data, along with optical observations with the ESO Faint Object Spectrograph, to investigate the spectral and temporal characteristics of SwiftJ053041.9-665426. The XMM-Newton data show coherent X-ray pulsations with a period of 28.77521(10)s (1σ). The X-ray spectrum can be modelled by an absorbed power law with photon index within the range 0.76 to 0.87. The addition of a black body component increases the quality of the fit but also leads to strong dependences of the photon index, black-body temperature and absorption column density. We identified the only optical counterpart within the error circle of XMM-Newton at an angular distance of ∼0.8", which is 2MASSJ05304215-6654303. We performed optical spectroscopy from which we classify the companion as a B0-1.5Ve star. The X-ray pulsations and long-term variability, as well as the properties of the optical counterpart, confirm that SwiftJ053041.9-665426 is a new Be/X-ray binary pulsar in the Large Magellanic Cloud.

Abstract Copyright:

Journal keyword(s): galaxies: individual: Large Magellanic Cloud - X-rays: binaries - stars: emission-line, Be - stars: neutron - pulsars: individual: Swift J053041.9-665426

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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9446 1
2 [MA93] 1367 HXB 01 03 13.9174859851 -72 09 14.259395723   14.70 14.79 15.0   B0.5IV-V 87 2
3 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5669 1
4 MACHO 44.1741.17 HXB 04 51 06.80 -69 48 03.2     14.70     ~ 13 1
5 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14832 1
6 NGC 2002 Cl* 05 30 21.000 -66 53 06.20   11.28 10.84     ~ 58 0
7 KMHK 987 Cl* 05 30 32.430 -66 54 07.31     12.32     ~ 7 0
8 SWIFT J053041.9-665426 X 05 30 41.9 -66 54 26           ~ 5 0
9 2MASS J05304215-6654303 IR 05 30 42.1458169030 -66 54 30.242945153           ~ 1 0
10 LS 1698 HXB 10 37 35.3144388592 -56 47 55.866836619   12.00 11.48 11.38   B0III/V:e 94 0

    Equat.    Gal    SGal    Ecl

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2020.07.10-02:48:38

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