1998A&A...338..505N

Query : 1998A&A...338..505N

1998A&A...338..505N - Astronomy and Astrophysics, volume 338505-510 (1998/10-2)

On the nature of Be/X-ray binaries.

NEGUERUELA I.

Abstract (from CDS):

It has been suggested that most Be/X-ray binaries are low X-ray luminosity nearby objects, containing white dwarfs (Chevalier & Ilovaisky, 1998A&A...330..201C). We show that existing evidence indicates that all known Be/X-ray binaries are relatively bright X-ray sources containing neutron stars and that the spectral distribution of this group differs considerably from that of isolated Be stars. We suggest that the different X-ray properties of the systems can be explained by the sizes of the orbits of the neutron stars. Systems with close orbits are bright transients which show no quiescent emission as a consequence of centrifugal inhibition of accretion. Systems with wide orbits are persistent sources and display no large outbursts. Systems with intermediate orbits present a mixture of both behaviours.

Abstract Copyright: ∼

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

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 - 2026 		#notes
1 AzV 102 HXB 00 51 53.1358981896 -72 31 48.721904580 13.66 14.79 14.38   14.40 O9.7V:ne 80 0
2 RX J0053.9-7226 HXB 00 53 55.181 -72 26 44.88   14.65 14.72   14.757 B1III 97 0
3 [MA93] 1845 HXB 01 17 40.1630558064 -73 30 50.523690888 13.30 14.14 14.18   14.09 B1-3(II)e 63 0
4 V* V635 Cas HXB 01 18 31.9704955824 +63 44 33.072603144 17.05 16.64 15.19 14.34 13.22 B0.2Ve 791 0
5 EM* GGA 104 HXB 01 47 00.2124077208 +61 21 23.663788056 11.76 12.09 11.366 11.00 10.52 B1IIIe 205 0
6 LS I +61 303 HXB 02 40 31.6644419688 +61 13 45.593918580 11.27 11.61 10.75 10.19 9.55 B0Ve 903 2
7 V* BQ Cam HXB 03 34 59.9116110096 +53 10 23.296879776   17.16 15.42 14.26 13.04 O8.5Ve 525 1
8 V* X Per HXB 03 55 23.0777456088 +31 02 45.039836148 6.090 6.840 6.720     O9.5III 1037 0
9 SV* HV 2289 HXB 05 01 23.8382436967 -70 33 33.871650021   14.528 14.411     B0Ve: 30 0
10 CAL E HXB 05 02 51.7474501824 -66 26 26.907946008   14.12 14.22 14.359   O9.5/B0III/Ve 37 0
11 [HP99] 946 Be* 05 20 30.9009 -69 31 54.999   14.41 14.40     O8e 72 0
12 HD 34921 HXB 05 22 35.2313961840 +37 40 33.638562768 6.78 7.64 7.48     B0IVpe 140 0
13 RX J0529.7-6556 HXB 05 29 47.8546718664 -65 56 43.592426736 13.761 14.477 14.594   14.741 B0.5Ve 36 0
14 RX J0531.2-6609 HXB 05 31 13.3008 -66 07 05.006     14.4     B0.7Ve 55 1
15 1A 0535-668 HXB 05 35 40.9970566152 -66 51 53.547559416       15.036 15.138 B2IIIe 302 0
16 HD 245770 HXB 05 38 54.5748918624 +26 18 56.836952784 9.30 9.84 9.39 8.77 8.30 O9/B0III/Ve 1045 0
17 V* V441 Pup HXB 07 28 53.5788273168 -26 06 28.897118208 11.27 12.29 11.83 11.53   O5Ve 91 0
18 * y Pup XB* 07 29 05.6951953008 -38 48 43.442359164   5.243 5.395     B3V 91 0
19 GRO J1008-571 HXB 10 09 46.9642314696 -58 17 35.603851848       14.63   B0e 269 0
20 WRAY 15-793 HXB 11 20 57.1736884968 -61 55 00.166078020 12.81 13.06 12.12     O9.5III/Ve 222 0
21 HD 102567 HXB 11 48 00.0214464120 -62 12 24.902384760 8.24 9.06 9.00 9.62   B1Vne 335 0
22 HD 109857 Be* 12 39 14.57557 -75 22 14.1384 6.33         B8Vn 73 0
23 HD 110432 HXB 12 42 50.2663572384 -63 03 31.052981412 4.79 5.58 5.31     B0.5IVpe 334 0
24 * mu.02 Cru Be* 12 54 36.8841589536 -57 10 07.193918388 4.59 5.09 5.20 5.00 5.06 B5Vne 189 0
25 V* V850 Cen HXB 13 01 17.0968941216 -61 36 06.637549788   15.6 14.40     B2Vne 361 0
26 4U 1416-62 HXB 14 21 12.1560262026 -62 41 56.089360085   17.9 17.2     B1e 171 0
27 4U 1850-03 HXB 18 48 17.7 -02 25 13           Be? 114 1
28 V* V2246 Cyg HXB 20 32 15.2749858128 +37 38 14.843024844   22.16 19.41 17.32 15.18 B0Ve 480 0
29 V* V490 Cep HXB 21 39 30.6903047304 +56 59 10.421969280   15.407 14.441 14.119   B1-B2Ve 186 0
30 BD+53 2790 HXB 22 07 56.2366802328 +54 31 06.408879888 9.4 10.11 9.84 9.64 9.43 O9.5Vep 233 0

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