2018A&A...610A..50P


Query : 2018A&A...610A..50P

2018A&A...610A..50P - Astronomy and Astrophysics, volume 610A, 50-50 (2018/2-1)

Supergiant fast X-ray transients versus classical supergiant high mass X-ray binaries: Does the difference lie in the companion wind?

PRADHAN P., BOZZO E. and PAUL B.

Abstract (from CDS):

We present a comparative study of stellar winds in classical supergiant high mass X-ray binaries (SgXBs) and supergiant fast X-ray transients (SFXTs) based on the analysis of publicly available out-of-eclipse observations performed with Suzaku and XMM-Newton. Our data set includes 55 observations of classical SgXBs and 21 observations of SFXTs. We found that classical SgXBs are characterized by a systematically higher absorption and luminosity compared to the SFXTs, confirming the results of previous works in the literature. Additionally, we show that the equivalent width of the fluorescence Kα iron line in the classical SgXBs is significantly larger than that of the SFXTs (outside X-ray eclipses). Based on our current understanding of the physics of accretion in these systems, we conclude that the most likely explanation of these differences is ascribed to the presence of mechanisms inhibiting accretion most of the time in SFXTs, thereby leading to a much less efficient photoionization of the stellar wind compared to classical SgXBs. We do not find evidence for the previously reported anticorrelation between the equivalent width of the fluorescence iron line and the luminosity of SgXBs.

Abstract Copyright: © ESO 2018

Journal keyword(s): X-rays: binaries

Simbad objects: 30

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Number of rows : 30
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 BD+60 73 HXB 00 37 09.6358153296 +61 21 36.487888344 9.79 10.14 9.66     B1Ib 76 0
2 V* V662 Cas HXB 01 18 02.6976641952 +65 17 29.829200388 12.27 11.99 11.14 10.33 9.58 B1Iae 252 0
3 V* GP Vel HXB 09 02 06.8608812864 -40 33 16.899168060 6.85 7.37 6.87 6.31 6.05 B0.5Ia 1443 0
4 HD 306414 s*b 11 21 46.8238550520 -59 51 47.970396396 10.12 10.69 10.23 10.00   B1Ia 144 0
5 V* BP Cru HXB 12 26 37.5605188992 -62 46 13.261044684   12.70 10.66     B1.5Iaeq 650 0
6 V* QV Nor HXB 15 42 23.3633146128 -52 23 09.577395960   16.3 14.5     B0.2Ia:e 398 1
7 IGR J16195-4945 HXB 16 19 32.1832111152 -49 44 30.565493340   17.4 16.8 15.3 15.6 B1sg 51 0
8 CXOU J162046.2-513006 HXB 16 20 46.2644580432 -51 30 06.045320232   18.9   16.28 13.4 B8IIIe 59 0
9 IGR J16318-4848 HXB 16 31 48.3090342864 -48 49 00.665054832           ~ 166 0
10 3FHL J1633.0-4746e HXB 16 32 01.87 -47 52 28.3           O8I 165 3
11 SWIFT J1633.8-4724B HXB 16 32 37.850 -47 23 41.45           O8Iafpe 35 0
12 NAME AX J163904-4642 HXB 16 39 06 -46 42.2           BIV-V 89 1
13 2MASS J16415078-4532253 HXB 16 41 50.7984926736 -45 32 25.366995132           O8.5(sg?) 100 2
14 2MASS J16480656-4512068 HXB 16 48 06.56 -45 12 06.8           O8.5Iab 127 2
15 2MASS J16492695-4349090 HXB 16 49 26.95 -43 49 09.0           B0.5Ib 52 0
16 NAME OAO 1657-41 HXB 17 00 48.884 -41 39 21.46           Ofpe/WN9 226 0
17 HD 153919 HXB 17 03 56.7725629224 -37 50 38.913331452 6.06 6.78 6.51 6.08 5.90 O6Iafcp 787 1
18 2MASS J17251139-3616575 HXB 17 25 11.392 -36 16 57.53     14.30     B0-1Ia 117 2
19 IGR J17354-3255 HX? 17 35 27.6058982616 -32 55 54.425912052           O9Iab 46 2
20 AX J1739.1-3020 HXB 17 39 11.5515537336 -30 20 37.787917704     14.40 13.91   O8.5Iab(f) 150 1
21 IGR J17544-2619 HXB 17 54 25.2722906112 -26 19 52.576928292   14.71 12.94 12.10 10.38 O9Ib 173 0
22 IGR J18029-2016 HXB 18 02 39.9 -20 17 13           B1b 77 1
23 SAX J1818.6-1703 HXB 18 18 37.8984077808 -17 02 47.967846180     17.4 17.4   ~ 97 0
24 [KRL2007b] 332 HXB 18 41 00.43 -05 35 46.5           B1Ib 125 1
25 [KRL2007b] 335 HXB 18 45 01.5 -04 33 58   16.24 14.06 12.71 11.42 O9Ia 83 0
26 2MASS J18461279-0222261 HX? 18 46 12.7939574952 -02 22 26.040674640   20.5   16.6   ~ 16 0
27 IGR J18483-0311 HXB 18 48 17.2064716656 -03 10 16.865225040 23.702 25.162 21.884 17.888 15.88 B0.5Ia 116 0
28 2MASS J18553040-0236167 HXB 18 55 30.4058947392 -02 36 16.737653700           B0Iaep 88 0
29 4U 1908+075 HXB 19 10 48.2133201408 +07 35 51.707133960           O7.5-9.5sg 112 0
30 INTEGRAL1 111 HXB 19 14 04.2271468632 +09 52 58.399995144   18.6 16.4     B0.5I 94 0

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2022.12.08-07:43:24

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