2015ApJ...809...40G


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.18CEST11:44:04

2015ApJ...809...40G - Astrophys. J., 809, 40 (2015/August-8)

Classifying X-ray binaries: a probabilistic approach.

GOPALAN G., VRTILEK S.D. and BORNN L.

Abstract (from CDS):

In X-ray binary star systems consisting of a compact object that accretes material from an orbiting secondary star, there is no straightforward means to decide whether the compact object is a black hole or a neutron star. To assist in this process, we develop a Bayesian statistical model that makes use of the fact that X-ray binary systems appear to cluster based on their compact object type when viewed from a three-dimensional coordinate system derived from X-ray spectral data where the first coordinate is the ratio of counts in the mid- to low-energy band (color 1), the second coordinate is the ratio of counts in the high- to low-energy band (color 2), and the third coordinate is the sum of counts in all three bands. We use this model to estimate the probabilities of an X-ray binary system containing a black hole, non-pulsing neutron star, or pulsing neutron star. In particular, we utilize a latent variable model in which the latent variables follow a Gaussian process prior distribution, and hence we are able to induce the spatial correlation which we believe exists between systems of the same type. The utility of this approach is demonstrated by the accurate prediction of system types using Rossi X-ray Timing Explorer All Sky Monitor data, but it is not flawless. In particular, non-pulsing neutron systems containing "bursters" that are close to the boundary demarcating systems containing black holes tend to be classified as black hole systems. As a byproduct of our analyses, we provide the astronomer with the public R code which can be used to predict the compact object type of XRBs given training data.

Abstract Copyright: © 2015. The American Astronomical Society. All rights reserved.

Journal keyword(s): methods: data analysis - methods: statistical - pulsars: general - stars: black holes - stars: neutron - X-rays: binaries

Simbad objects: 41

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Number of rows : 41

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 SK 160 HXB 01 17 05.1447530244 -73 26 36.015353425 12.23 13.00 13.15   13.17 O9.7Ia+ 813 0
2 V* V635 Cas HXB 01 18 31.9704429246 +63 44 33.071137750 17.05 16.64 15.19 14.34 13.22 B0.2Ve 674 0
3 V* X Per HXB 03 55 23.0778791365 +31 02 45.045745259 6.090 6.840 6.720     O9.5III 920 0
4 HD 245770 HXB 05 38 54.5749436467 +26 18 56.839215267 9.30 9.84 9.39 8.77 8.30 O9/B0III/Ve 887 0
5 X LMC X-3 HXB 05 38 56.6325045489 -64 05 03.321118015   17 17.2     B2.5Ve 637 0
6 X LMC X-1 HXB 05 39 38.8285930597 -69 44 35.533031148   14.8 14.5     O8(f)p 576 2
7 V* V1055 Ori LXB 06 17 07.3 +09 08 13   18.80 18.5     ~ 522 1
8 2E 1752 HXB 06 58 17.2878555250 -07 12 35.203675058   12.38 10.9 11.40   O9.7Ve 73 0
9 V* GP Vel HXB 09 02 06.8610736194 -40 33 16.896402010 6.85 7.37 6.87 6.31 6.05 B0.5Ia 1388 0
10 V* KV UMa HXB 11 18 10.7922353051 +48 02 12.319175505     12.25     K5V-M1V 737 0
11 V* V779 Cen HXB 11 21 15.0920367078 -60 37 25.627505233   14.4 12.27     O9III/Veq 1006 0
12 V* GR Mus LXB 12 57 37.153 -69 17 18.98   19.40 19.1     ~ 247 0
13 V* QV Nor HXB 15 42 23.3633078550 -52 23 09.576918639   16.3 14.5     B0.2Ia:e 380 1
14 V* V381 Nor HXB 15 50 58.6520652623 -56 28 35.309070422   17.95 16.6     K3III 1062 0
15 V* QX Nor LXB 16 12 43.0 -52 25 23           ~ 849 1
16 V* V818 Sco LXB 16 19 55.0688745859 -15 38 25.019920749 11.60 12.40 11.1     Oev 1544 0
17 V* V801 Ara LXB 16 40 55.5979962948 -53 45 04.953475039 17.50 18.20 17.5   17.07 ~ 803 1
18 [GHJ2008] 3 HXB 16 50 00.980 -49 57 43.60     11.89     K4V 358 0
19 V* V1033 Sco HXB 16 54 00.137 -39 50 44.90   15.20 14.2 16.14   F5IV 1751 1
20 V* HZ Her LXB 16 57 49.8110797681 +35 20 32.487435684 11.90 14.89 13.63 13.88   B3/6ep 1953 0
21 [KRL2007b] 214 LXB 17 00 58.46 -46 11 08.6           ~ 210 0
22 V* V821 Ara HXB 17 02 49.3810714542 -48 47 23.163091737 16.20 16.30 15.5     ~ 1826 0
23 HD 153919 HXB 17 03 56.7728262865 -37 50 38.912077679 6.06 6.78 6.51 6.08 5.90 O6Iafcp 769 1
24 V* V1101 Sco LXB 17 05 44.4915929414 -36 25 23.049863107   20.10 18.6     ~ 414 0
25 V* V2216 Oph LXB 17 31 44.17 -16 57 40.9 16.40 17.10 16.8     ~ 266 1
26 3FHL J1746.2-2852 LXB 17 44 33.09 -28 44 27.0           ~ 498 0
27 X Sgr X-1 LXB 17 47 56.0 -26 33 49           ~ 352 0
28 4U 1758-25 LXB 18 01 09.7308941918 -25 04 44.128444504     11.08     ~ 624 1
29 X Sgr X-3 LXB 18 01 32.3 -20 31 44           ~ 221 1
30 V* NP Ser LXB 18 16 01.389 -14 02 10.62   18.8       K 608 2
31 V* MM Ser LXB 18 39 57.56 +05 02 09.6   19.2 19.2     ~ 328 0
32 V* V406 Vul HXB 18 58 41.580 +22 39 29.40 15.00 15.65 15.31     G5V-K0V 326 0
33 2MAXI J1900-248 LXB 19 00 08.65 -24 55 13.7     18.09     ~ 188 0
34 4U 1901+03 HXB 19 03 39.3919805263 +03 12 15.742327187           OB 77 0
35 X Aql X-1 LXB 19 11 16.0572031521 +00 35 05.876658556           ~ 1040 1
36 Granat 1915+105 HXB 19 15 11.55576 +10 56 44.9052           ~ 2361 0
37 V* V1405 Aql LXB 19 18 47.871 -05 14 17.09 20.90 21.40 21.0     ~ 447 0
38 2MASS J19493548+3012317 HXB 19 49 35.4840244577 +30 12 31.775034731   15.16 14.22 13.53 12.88 B0Ve 141 1
39 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 3997 0
40 V* V2246 Cyg HXB 20 32 15.2744631713 +37 38 14.839930326   22.16 19.41 17.32 15.18 B0Ve 384 0
41 V* V1341 Cyg LXB 21 44 41.1544523872 +38 19 17.065856122 15.00 15.13 14.68 15.00   A9III 1094 1

    Equat.    Gal    SGal    Ecl

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2021.04.18-11:44:04

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