2007A&A...461..631N


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.16CEST03:06:10

2007A&A...461..631N - Astronomy and Astrophysics, volume 461, 631-639 (2007/1-2)

A search for counterparts to massive X-ray binaries using photometric catalogues.

NEGUERUELA I. and SCHURCH M.P.E.

Abstract (from CDS):

The X-ray and γ-ray observatory INTEGRAL has discovered large numbers of new hard X-ray sources, many of which are believed to be high mass X-ray binaries. However, for a significant fraction, their counterparts remain unidentified. We explore the use of photometric catalogues to find optical counterparts to high mass X-ray binaries and search for objects likely to be early-type stars within the error circles of several INTEGRAL sources. Candidates were selected from 2MASS photometry by means of a reddening free Q parameter. Sufficiently bright candidates were spectroscopically observed. Many of the candidates selected turned out to be moderately reddened late A or early F stars. Optically visible OB stars are very scarce even in these Galactic Plane fields. Our method is able to identify the counterpart to IGR J16207-5129, confirmed by a Chandra localisation. We classify this object as a B0 supergiant. In the field of AX J1820.5-1434, we find a mid or early B-type star, but we cannot confirm it as the counterpart. For IGR J16320-4751 we rule out the optically visible candidate as a possible counterpart. For AX J1700.2-4220, we do not find any suitable candidate within the ASCA error circle. We classify HD 153295, a marginal candidate to be the counterpart, as B0.5IVe, and find a distance compatible with membership in Sco OB1. In the case of IGR J17091-3624, the object associated with a variable radio source in the field is a late F star. We derive a spectral type B0IIIe for HD 100199, previously identified as the counterpart to IGR J11305-6256. The procedure used is able to correctly identify OB stars and, in about one third of the cases, may lead to the localisation of the correct counterpart. However, the majority of INTEGRAL error circles do not contain any suitable optically visible counterpart. Deep infrared searches are going to be necessary in order to locate the counterparts to these sources.

Abstract Copyright:

Journal keyword(s): binaries: close - stars: supergiants - X-rays: binaries - stars: emission line, Be

VizieR on-line data: <Data not supplied by the author>

Simbad objects: 46

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Number of rows : 46

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 HD 100199 HXB 11 31 06.9123810954 -62 56 48.929152927 7.33 8.147 8.17 8.98   B0/1(III)n(e) 86 0
2 [KRL2007b] 98 HX? 11 32.1 -53 11           ~ 15 0
3 2MASS J16202603-5129275 IR 16 20 26.03 -51 29 27.6           ~ 1 0
4 USNO-B1.0 0385-00554515 * 16 20 26.1782876975 -51 29 28.800680848   17.9   16.1   ~ 1 0
5 2MASS J16202935-5130457 IR 16 20 29.35 -51 30 45.7           ~ 1 0
6 HD 146803 Em* 16 20 36.3347901012 -51 29 35.313848611   10.35 10.39     A1IV 12 0
7 CXOU J162046.2-513006 HXB 16 20 46.2655398336 -51 30 06.046848280   18.9   16.28 13.4 B8IIIe 56 0
8 SSTGLMC G335.3241+00.1030 gam 16 28 09.84 -48 38 59.0           ~ 1 0
9 USNO-B1.0 0413-00504855 * 16 28 09.84 -48 38 59.0   14.9   14.2   K 1 0
10 2MASS J16281083-4838560 HXB 16 28 10.83 -48 38 56.1           OBsg 31 1
11 IGR J16283-4843 gam 16 28.3 -48 43           ~ 3 0
12 IGR J16318-4848 HXB 16 31 48.3102815892 -48 49 00.664215918           ~ 155 0
13 2MASS J16320175-4752289 IR 16 32 01.76 -47 52 29.0           ~ 6 1
14 3FHL J1631.6-4756e HXB 16 32 01.87 -47 52 28.3           O8I 141 3
15 2MASS J16320215-4752322 * 16 32 02.1636048300 -47 52 32.294200860   17.3 16.1     K 7 1
16 2MASS J16390535-4642137 IR 16 39 05.36 -46 42 13.7           ~ 12 1
17 IGR J16393-4641 gam 16 39.3 -46 41           ~ 5 1
18 2MASS J16415078-4532253 HXB 16 41 50.7854893198 -45 32 25.452141297           O8.5(sg?) 89 2
19 2MASS J16463526-4507045 HXB 16 46 35.2592332854 -45 07 04.609816032   15.2       O9.5Ia 87 1
20 2MASS J16480656-4512068 HXB 16 48 06.56 -45 12 06.8           O8.5Iab 117 2
21 USNO-B1.0 0447-00531332 * 16 48 06.8543388749 -45 12 07.981988216           ~ 4 0
22 NAME Sco OB 1 As* 16 53.5 -41 57           ~ 187 0
23 NGC 6231 OpC 16 54 08.51 -41 49 36.0   2.83 2.6     ~ 473 0
24 2MASS J17001531-4219395 * 17 00 15.3212641671 -42 19 39.529622571           F2III 1 0
25 2MASS J17001663-4219078 * 17 00 16.6380227800 -42 19 07.876292721           ~ 1 0
26 2MASS J17001950-4219410 * 17 00 19.5048351122 -42 19 41.096267333           ~ 1 0
27 2MASS J17002524-4219003 HXB 17 00 25.244 -42 19 00.30   9.58 9.15     Be 31 1
28 HD 153295 Be* 17 00 25.2449 -42 19 00.284 9.05 9.61 9.10 9.52   O/Be 42 1
29 IRAS 16569-4213 * 17 00 27.1253043065 -42 17 37.285776069           ~ 3 0
30 GSC 07877-00412 Em* 17 00 28.0861042185 -42 16 53.258232446     12.0     ~ 2 0
31 2MASS J17090199-3623260 * 17 09 01.9903231706 -36 23 26.160755949   16.3 15.4     ~ 3 1
32 2MASS J17090219-3623292 IR 17 09 02.1909812216 -36 23 29.440210522           ~ 1 0
33 [KRL2007b] 222 LXB 17 09 07.61 -36 24 25.7           ~ 202 1
34 2XMM J172511.3-361658 HXB 17 25 11.392 -36 16 57.53           B0-1Ia 104 2
35 AX J1739.1-3020 HXB 17 39 11.5521531365 -30 20 37.783172824   17.0 14.8     O8.5Iab(f) 141 0
36 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 10996 0
37 IGR J17544-2619 HXB 17 54 25.2724584579 -26 19 52.578788584   14.71 12.94 12.10 10.38 O9Ib 162 0
38 IGR J18029-2016 HXB 18 02 39.9 -20 17 13           B1b 68 1
39 SAX J1818.6-1703 HXB 18 18 37.8990045305 -17 02 47.970872274     17.4 17.4   ~ 95 0
40 [KRL2007b] 314 HXB 18 20 29.5 -14 34 24           O9.5-B0Ve 55 1
41 2MASS J18203114-1434193 * 18 20 31.1440313041 -14 34 19.351341266           ~ 3 1
42 TYC 5125-3070-1 * 18 40 46.8868607283 -05 40 50.214677226   12.66 11.87     ~ 1 1
43 IGR J18406-0539 Em* 18 40 47.0 -05 40 51     10.8     ~ 14 2
44 [KRL2007b] 332 HXB 18 41 00.43 -05 35 46.5           B1Ib 115 1
45 * bet Scl PM* 23 32 58.2589788 -37 49 05.757000 3.92 4.28 4.37 4.37 4.44 B9.5IIIpHgMnSi 162 0
46 NAME Galactic Bulge reg ~ ~           ~ 3231 0

    Equat.    Gal    SGal    Ecl

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2019.10.16-03:06:10

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