2005MNRAS.362..879S


Query : 2005MNRAS.362..879S

2005MNRAS.362..879S - Mon. Not. R. Astron. Soc., 362, 879-890 (2005/September-3)

High-mass X-ray binaries in the Small Magellanic Cloud: the luminosity function.

SHTYKOVSKIY P. and GILFANOV M.

Abstract (from CDS):

We study a population of compact X-ray sources in the Small Magellanic Cloud (SMC) using archival data from the XMM-Newton observatory. The total area of the survey is ~1.5 deg2 with the limiting sensitivity of ~10–14 erg/s/cm2, corresponding to a luminosity of ~4.3 x1033 erg/s at the SMC distance. Out of ∼150 point sources detected in the 2-8 keV energy band, ∼3/4 are cosmic X-ray background sources, observed through the SMC. Based on the properties of the optical and near-infrared counterparts of the detected sources, we identified likely high-mass X-ray binary (HMXB) candidates and sources whose nature is uncertain, thus providing lower and upper limits on the luminosity distribution of HMXBs in the observed part of the SMC.

The observed number of HMXBs is consistent with the prediction based on star formation rate (SFR) estimates derived from the supernovae frequency and an analysis of colour-magnitude diagrams for the stellar population. If, on the contrary, the true value of the SFR is better represented by far-infrared-, Hα- and ultraviolet-based estimators, then the abundance of HMXBs in the SMC may significantly (by a factor of as much as ∼10) exceed the value derived for the Milky Way and other nearby galaxies. The shape of the observed distribution at the bright end is consistent with the universal HMXB X-ray luminosity function. At the faint end, LX≲ 2x1035 erg/s, the upper limit on the luminosity function is consistent with the L–0.6 power law, while the lower limit is significantly flatter than this.


Abstract Copyright: 2005 RAS

Journal keyword(s): stars: neutron - Magellanic Clouds - X-rays: binaries - X-rays: galaxies

Nomenclature: Table 2: [SG2005] SMC NN (Nos 1-50).

Simbad objects: 57

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Number of rows : 57
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 [SG2005] SMC 42 HXB 00 47 19.9 -73 08 22     17.3     ~ 1 0
2 [MA93] 172 HXB 00 47 23.3377530166 -73 12 27.369187063   15.85 15.85   16.00 B1-B1.5V 49 0
3 [SG2005] SMC 46 HXB 00 48 04.0 -73 17 01     17.0     ~ 1 0
4 SXP 25.5 HXB 00 48 14.1215900525 -73 10 03.937457542 15.06 15.56 15.30   15.51 B1.5e 26 1
5 MQS J004818.65-732100.1 QSO 00 48 18.77 -73 20 59.9   16.43 16.57   16.69 ~ 10 0
6 [SG2005] SMC 40 HXB 00 48 33.4 -73 23 55     17.7     ~ 2 0
7 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
8 [SG2005] SMC 47 HXB 00 49 05.4 -73 14 10     18.0     ~ 2 0
9 SNR B0047-73.5 SNR 00 49 07.75 -73 14 02.0           ~ 54 0
10 SXP 18.3 HXB 00 49 11.4584818147 -72 49 37.500630189 15.16 15.80 15.61 15.42 15.525 ~ 38 0
11 RX J0049.2-7311 HXB 00 49 13.6245604462 -73 11 37.870502830   16.52 16.51   16.21 B1e 46 1
12 LIN 139 HXB 00 49 42.0074565521 -73 23 14.677257632 14.09 15.00 14.98   14.70 O9.5-B0.5III-V 67 0
13 [SG2005] SMC 50 HXB 00 50 20.2 -73 11 17     17.0     ~ 2 0
14 V* DZ Tuc HXB 00 50 44.7076463726 -73 16 05.432580504 14.46 15.37 15.44   15.31 B0-B0.5V 72 0
15 SXP 292 HXB 00 50 47.9890020190 -73 18 18.053053252   15.352 15.303 15.30 15.087 B0 13 0
16 [MA93] 414 HXB 00 50 57.1196772402 -73 10 08.172222946   14.43 14.35     B0.5e 23 0
17 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
18 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9859 1
19 V* CF Tuc RS* 00 53 07.7682099536 -74 39 05.609032263   8.31 7.90   6.730 G2/5V+F0 222 0
20 [SG2005] SMC 43 HXB 00 53 35.8 -72 34 24     17.2     ~ 1 0
21 SXP 342 HXB 00 54 03.8562706190 -72 26 32.967594502 13.82 14.95 14.94 14.80 14.79 ~ 17 0
22 [SG2005] SMC 36 HXB 00 54 32.2 -72 18 09     16.6     ~ 3 0
23 [SG2005] SMC 41 HXB 00 54 41.1 -72 17 20     15.7     ~ 2 0
24 LIN 268 HXB 00 54 55.8842919896 -72 45 10.956178546 13.83 14.73 15.0 14.73   B1e 46 0
25 [MA93] 810 HXB 00 54 56.1753852837 -72 26 47.860478480 14.17 15.24 15.28   15.11 O9V 70 0
26 RX J0055.2-7238 HXB 00 55 18.436 -72 38 51.85   16.02 15.87     O9.5V 33 0
27 RX J0055.4-7210 HXB 00 55 27.746 -72 10 58.74           ~ 32 2
28 SXP 645 HXB 00 55 35.1436215338 -72 29 06.635278060 13.60 14.65 14.69 14.21 14.67 ~ 18 0
29 [MA93] 904 HXB 00 56 05.5342353201 -72 21 59.448671305   15.84 15.88     B1V 31 0
30 LIN 301 HXB 00 56 14.6500150924 -72 37 55.373001497   14.618 14.568   14.219 B1-5(II) 14 0
31 [SG2005] SMC 38 HXB 00 56 18.853 -72 28 02.71     15.3     ~ 6 0
32 2dFS 1224 HXB 00 57 23.9552544411 -72 23 56.636041352 13.60 14.64 14.71   14.92 B1.5e 13 1
33 [MA93] 1020 HXB 00 57 36.0156494976 -72 19 34.057560848 14.89 15.95 15.97 15.79 15.791 B0/4e 39 0
34 [MA93] 1036 HXB 00 57 49.5743958452 -72 02 35.873771227   15.52 15.64     B0-B2III-V 52 0
35 [MA93] 1038 HXB 00 57 50.3832156922 -72 07 56.133951497 14.63 15.64 15.69   15.47 B1-2(Be-Fe) 39 0
36 RX J0058.2-7231 HXB 00 58 12.5870706987 -72 30 48.761117528 13.91 14.98 14.87   14.62 B0IIIe 58 0
37 SXP 202 HXB 00 59 21.0392917410 -72 23 17.304931904 13.81 14.96 14.97   15.07 B0-B1V 37 0
38 2E 245 X 00 59 25.7 -72 10 11           ~ 27 1
39 [SG2005] SMC 45 HXB 01 00 22.9 -72 11 27     17.0     ~ 3 0
40 LIN 365 HXB 01 00 30.0411508295 -72 20 33.457373673   14.53 14.6     B1.5e 19 0
41 [SG2005] SMC 39 HX? 01 00 37.3 -72 13 17   16.62 16.7     B2V 6 0
42 PSR J0100-7211 Psr 01 00 42.86 -72 11 33.3   17.69 17.82     B3V 88 0
43 [MA93] 1240 HXB 01 01 02.8879875982 -72 06 58.964896307   15.68 15.72 15.52   B0-B2III-V 44 0
44 [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
45 RX J0101.6-7204 HXB 01 01 29.80 -72 04 02.0   16.4 17.7     Be 16 0
46 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
47 [MA93] 1367 HXB 01 03 13.9174859851 -72 09 14.259395723   14.70 14.79 15.0   B0.5IV-V 87 2
48 OGLE J010328.46-720653.6 EB* 01 03 28.5 -72 06 51   16.69 16.67   16.86 ~ 4 0
49 [MA93] 1393 HXB 01 03 37.5346803264 -72 01 33.205470837   14.54 14.65     B0III-V 58 0
50 SNR B0102-72.3 SNR 01 04 01.2 -72 01 52           ~ 356 1
51 [SG2005] SMC 44 HXB 01 04 37.4 -72 06 30     18.0     ~ 1 0
52 SNR B0103-72.6 SNR 01 05 05.6 -72 23 20           ~ 75 1
53 RX J0105.1-7211 HXB 01 05 09.941 -72 11 47.00   15.62 15.63 18.3   B1-B2III-V 52 1
54 [MA93] 1557 HXB 01 05 55.4 -72 03 49 14.63 15.61 15.63 15.54   ~ 23 0
55 SK 160 HXB 01 17 05.1447530244 -73 26 36.015353425 12.23 13.00 13.15   13.17 O9.7Ia+ 814 0
56 [MA93] 1867 HXB 01 19 39.0125466505 -73 30 11.585055504   15.77 15.8 15.99 15.54 B1.5-B2III-Ve 11 1
57 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1854 1

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2021.08.01-05:57:29

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