2006A&A...458..591D


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.22CET15:11:17

2006A&A...458..591D - Astronomy and Astrophysics, volume 458, 591-595 (2006/11-1)

Infrared polarimetry of the microquasars H1743-322, XTE J1550-564 and GRO J1655-40.

DUBUS G. and CHATY S.

Abstract (from CDS):

The optical/IR emission from X-ray binaries can be intrinsically polarised because of light scattered within the system or because there is significant synchrotron emission at high frequencies from a compact jet. We report on polarised light observations of three microquasars (X-ray binaries with radio jets). Ks band polarimetric observations were obtained at the ESO NTT using SOFI. The linear polarisation of the three systems is derived relative to that of other stars in the field-of-view, so as to distinguish intrinsic polarisation from interstellar polarisation. H1743-322 was observed in outburst in 2003 and 2004. We measure a linear polarisation of 2.25±0.75% comparable to that of other nearby stars. The polarisation is very likely interstellar, consistent with the large extinction (AV≃11) along the line-of-sight. GRO J1655-40 was observed in quiescence and shows no evidence for intrinsic polarisation. XTE J1550-564 was observed during a weak X-ray outburst. It shows a higher polarisation (at the 2.5σ level) than neighbouring stars within 1'. Further studies are needed to establish the nature of this possible intrinsic polarisation.

Abstract Copyright:

Journal keyword(s): techniques: polarimetric - binaries: close - infrared: stars - X-rays: binaries

Simbad objects: 16

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Number of rows : 16

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 1A 0620-00 HXB 06 22 44.5420315454 -00 20 44.289428950 10.60 11.40 11.2     K3V-K7V 1030 0
2 HD 64299 * 07 52 25.5094669434 -23 17 46.749151162   10.27 10.11     A1V 27 0
3 V* KV UMa HXB 11 18 10.7922353051 +48 02 12.319175505     12.25     K5V-M1V 707 0
4 V* BW Cir HXB 13 58 09.700 -64 44 05.80 17.90 18.00 16.9     ~ 188 1
5 V* V381 Nor HXB 15 50 58.6520652623 -56 28 35.309070422   17.95 16.6     K3III 1000 0
6 V* V818 Sco LXB 16 19 55.0688745859 -15 38 25.019920749 11.60 12.40 11.1     Oev 1514 0
7 V* V1033 Sco HXB 16 54 00.137 -39 50 44.90   15.20 14.2 16.14   F5IV 1669 1
8 V* HZ Her LXB 16 57 49.8110797681 +35 20 32.487435684 11.90 14.89 13.63 13.88   B3/6ep 1902 0
9 V* V821 Ara HXB 17 02 49.3810714542 -48 47 23.163091737 16.20 16.30 15.5     ~ 1705 0
10 HD 155197 * 17 10 15.7465813473 -04 50 03.657819982   10.16 9.56     F0V 42 0
11 NAME XTE J17464-3213 LXB 17 46 15.59637 -32 14 00.8600           ~ 569 0
12 SS 433 HXB 19 11 49.5645897701 +04 58 57.824087535   16.3 13.0     A7Ib: 1899 3
13 Granat 1915+105 LXB 19 15 11.54938 +10 56 44.7585           ~ 2236 0
14 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 3850 0
15 V* V1521 Cyg HXB 20 32 25.78 +40 57 27.9           WN4/5-6/7 1743 2
16 V* V1341 Cyg LXB 21 44 41.1544523872 +38 19 17.065856122 15.00 15.20 14.7     A9III 1060 0

    Equat.    Gal    SGal    Ecl

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2019.11.22-15:11:17

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