2008A&A...489..327H


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.02CEST15:26:37

2008A&A...489..327H - Astronomy and Astrophysics, volume 489, 327-348 (2008/10-1)

XMM-Newton observations of the Small Magellanic Cloud: Be/X-ray binary pulsars active between October 2006 and June 2007.

HABERL F., EGER P. and PIETSCH W.

Abstract (from CDS):

We analysed eight XMM-Newton observations toward the Small Magellanic Cloud (SMC), performed between October 2006 and June 2007, to investigate high mass X-ray binary systems. We produced images from the European Photon Imaging Cameras (EPIC) and extracted X-ray spectra and light curves in different energy bands from sources that yielded a sufficiently high number of counts for a detailed temporal and spectral analysis. To search for periodicity we applied Fourier transformations and folding techniques and determined pulse periods using a Bayesian approach. To identify optical counterparts we produced X-ray source lists for each observation using maximum likelihood source detection techniques and correlated them with optical catalogues. The correlations were also used for astrometric boresight corrections of the X-ray source positions. We found new X-ray binary pulsars with periods of 202s (XMMUJ005929.0-723703), 342s (XMMUJ005403.8-722632), 645s (XMMUJ005535.2-722906) and 325s (XMMUJ005252.1-721715), in the latter case confirming the independent discovery in Chandra data. In addition we detected sixteen known Be/X-ray binary pulsars and six ROSAT-classified candidate high mass X-ray binaries. From one of the candidates, RXJ0058.2-7231, we discovered X-ray pulsations with a period of 291s which makes it the likely counterpart of XTEJ0051-727. From the known pulsars, we revise the pulse period of CXOUJ010206.6-714115 to 967s, and we detected the 18.37s pulsar XTEJ0055-727 (=XMMJ004911.4-724939) in outburst, which allowed us to localise the source. The pulse profiles of the X-ray pulsars show a wide variety of shapes from smooth to highly structured patterns and differing energy dependence. For all the candidate high mass X-ray binaries, optical counterparts can be identified with magnitudes and colours consistent with Be stars. Twenty of the Be/X-ray binaries were detected with X-ray luminosities in the range 1.5x1035-5.5x1036erg/s. The majority of the spectra is well represented by an absorbed power-law with an average power-law index of 0.93. The absorption (in addition to the Galactic foreground value) varies over a wide range between a few 1020cm–2 and several 1022cm–2. An overall correlation of the absorption with the total SMC HI column density suggests that the absorption seen in the X-ray spectra is often largely caused by interstellar gas.

Abstract Copyright:

Journal keyword(s): galaxies: individual: Small Magellanic Cloud - galaxies: stellar content - stars: emission-line, Be - stars: neutron - X-rays: binaries

Simbad objects: 42

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Number of rows : 42

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 [MA93] 172 HXB 00 47 23.3377530166 -73 12 27.369187063   15.85 15.85   16.00 B1-B1.5V 49 0
2 LHA 115-N 19 HII 00 48 06 -73 08.7           ~ 61 0
3 SXP 25.5 HXB 00 48 14.104 -73 10 04.52 15.06 15.56 15.30   15.51 B1.5e 19 0
4 LIN 110 HXB 00 48 34.1206830477 -73 02 31.310801020 14.00 14.79 14.84 14.66 14.833 B1.5e 20 0
5 RX J0049.0-7250 HXB 00 49 03.3 -72 50 52   17.01 16.92   16.68 B3:V 47 0
6 SXP 18.3 HXB 00 49 11.4584818147 -72 49 37.500630189 15.16 15.80 15.61 15.42 15.525 ~ 38 0
7 RX J0049.2-7311 HXB 00 49 13.6245604462 -73 11 37.870502830   16.52 16.51   16.21 B1e 45 1
8 [MA93] 300 HXB 00 49 29.848 -73 10 58.33 15.36 15.85 15.66 15.38   B1e 19 1
9 [MA93] 302 HXB 00 49 30.612 -73 31 05.00   14.6 14.655   14.5 ~ 15 0
10 LIN 139 HXB 00 49 42.0074565521 -73 23 14.677257632 14.09 15.00 14.98   14.70 O9.5-B0.5III-V 65 0
11 V* DZ Tuc HXB 00 50 44.7076463726 -73 16 05.432580504 14.46 15.37 15.44   15.31 B0-B0.5V 71 0
12 SXP 4.78 HXB 00 51 38.7739800334 -72 17 04.797056212 14.63 15.66 15.63   15.44 B0V-B1Ve 38 0
13 LIN 193 HXB 00 51 52.0247273096 -73 10 34.142453336 13.39 14.38 14.45 14.24 14.28 O9.5-B0V 69 0
14 AzV 102 HXB 00 51 53.1358268638 -72 31 48.721856328 13.66 14.79 14.38   14.40 B0-5(II) 67 0
15 LIN 198 HXB 00 52 05.6254079356 -72 26 04.230639207 13.86 14.91 14.91 14.91   B0-5(II)e 124 0
16 SXP 82.4 HXB 00 52 08.9597026315 -72 38 03.308947558 14.33 15.15 15.23   14.83 B1-5(II)e 34 0
17 LIN 203 HXB 00 52 13.9960952088 -73 19 18.814054598   14.66 14.67   14.534 O9.5IIIe/B0Ve 76 0
18 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9439 1
19 NAME DEM S 68SE SNR 00 52 43.00 -72 37 06.0           ~ 41 0
20 SXP 327 HXB 00 52 52.22 -72 17 15.1 15.83 16.41 16.62 16.43 16.82 ~ 21 0
21 RX J0053.4-7227 HXB 00 53 23.8588224453 -72 27 15.446832856 15.06 16.11 16.19   16.14 B1-B2IV-V 29 0
22 RX J0053.9-7226 HXB 00 53 55.181 -72 26 44.88   14.65 14.72     B1III 83 0
23 SXP 342 HXB 00 54 03.8562706190 -72 26 32.967594502 13.82 14.95 14.94 14.80 14.79 ~ 16 0
24 [SG2005] SMC 36 HXB 00 54 32.2 -72 18 09     16.6     ~ 3 0
25 LIN 268 HXB 00 54 55.8842919896 -72 45 10.956178546 13.83 14.73 15.0 14.73   B1e 45 0
26 [MA93] 810 HXB 00 54 56.1753852837 -72 26 47.860478480 14.17 15.24 15.28   15.11 O9V 67 0
27 SXP 645 HXB 00 55 35.1436215338 -72 29 06.635278060 13.60 14.65 14.69 14.21 14.67 ~ 18 0
28 [MA93] 1020 HXB 00 57 36.0156494976 -72 19 34.057560848 14.89 15.95 15.97 15.79 15.791 B0/4e 38 0
29 RX J0058.2-7231 HXB 00 58 12.5870706987 -72 30 48.761117528 13.91 14.98 14.87   14.62 B0IIIe 56 0
30 LHA 115-N 67 PN 00 58 37.095 -71 35 48.80   16.3 16.4 15.27 17.66 ~ 87 0
31 RX J0059.2-7138 HXB 00 59 12.7444160995 -71 38 44.962593751   14.07 14.01 14.36   B1-B1.5II-III 80 0
32 SXP 202 HXB 00 59 21.0392917410 -72 23 17.304931904 13.81 14.96 14.97   15.07 B0-B1V 37 0
33 [MA93] 1147 HXB 00 59 28.6845508943 -72 37 04.201964304 14.55   15.31     B0-5(III)e 13 0
34 LIN 389 HXB 01 01 52.2957229970 -72 23 34.046468784 13.84 14.57 14.94 15.48 14.85 O9-B0III 36 0
35 AzV 294 HXB 01 02 06.6796872488 -71 41 16.120453701 13.54 14.52 14.60 15.20 14.42 B0-B0.5III-V 28 0
36 SXP 6.85 HXB 01 02 53.3181214914 -72 44 35.166325803   14.51 14.59     O9.5-B0IV-V 55 0
37 [MA93] 1367 HXB 01 03 13.9174859851 -72 09 14.259395723   14.70 14.79 15.0   B0.5IV-V 87 2
38 [MA93] 1393 HXB 01 03 37.5346803264 -72 01 33.205470837   14.54 14.65     B0III-V 57 0
39 SXP 65.8 HXB 01 07 12.6093687487 -72 35 33.882350582 14.72 15.52 15.64 15.5 15.73 B1-B1.5II-III 21 0
40 SK 160 HXB 01 17 05.1447530244 -73 26 36.015353425 12.23 13.00 13.15   13.17 O9.7Ia+ 798 0
41 EM* GGA 104 HXB 01 47 00.2121223849 +61 21 23.661992704 11.76 12.09 11.366 11.00 10.52 B1IIIe 168 0
42 V* X Per HXB 03 55 23.0778791365 +31 02 45.045745259 6.090 6.840 6.720     O9.5III 901 0

    Equat.    Gal    SGal    Ecl

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2020.07.02-15:26:37

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