2016A&A...593A..97Z


Query : 2016A&A...593A..97Z

2016A&A...593A..97Z - Astronomy and Astrophysics, volume 593A, 97-97 (2016/9-1)

Optical spectroscopy of Be/gamma-ray binaries.

ZAMANOV R.K., STOYANOV K.A., MARTI J., LATEV G.Y., NIKOLOV Y.M., BODE M.F. and LUQUE-ESCAMILLA P.L.

Abstract (from CDS):

We report optical spectroscopic observations of the Be/γ-ray binaries LSI+61303, MWC 148 and MWC 656. The peak separation and equivalent widths of prominent emission lines (Hα, Hβ, Hγ, HeI, and FeII) are measured. We estimated the circumstellar disc size, compared it with separation between the components, and discussed the disc truncation. We find that in LSI+61°303 the compact object comes into contact with the outer parts of the circumstellar disc at periastron, in MWC 148 the compact object goes deeply into the disc during the periastron passage, and in MWC 656 the black hole is accreting from the outer parts of the circumstellar disc along the entire orbit. The interstellar extinction was estimated using interstellar lines. The rotation of the mass donors appears to be similar to the rotation of the mass donors in Be/X-ray binaries. We suggest that X-ray/optical periodicity ∼1 day deserves to be searched for.

Abstract Copyright: © ESO, 2016

Journal keyword(s): stars: emission-line, Be - stars: winds, outflows - binaries: spectroscopic

Simbad objects: 13

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Number of rows : 13
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 LS I +61 303 HXB 02 40 31.6641883136 +61 13 45.591138110 11.27 11.61 10.75 10.19 9.55 B0Ve 788 2
2 HD 21650 Em* 03 31 15.6787296829 +41 43 35.238468792   7.36 7.33     B5 31 0
3 HD 245770 HXB 05 38 54.5749436467 +26 18 56.839215267 9.30 9.84 9.39 8.77 8.30 O9/B0III/Ve 909 0
4 HD 259440 HXB 06 32 59.2566624297 +05 48 01.162565528 9.17 9.58 9.12     B0pe 196 0
5 2FGL J1019.0-5856 HXB 10 19 02.270 -58 56 29.87           ~ 103 0
6 V* V779 Cen HXB 11 21 15.0920367078 -60 37 25.627505233   14.4 12.27     O9III/Veq 1015 0
7 CPD-63 2495 HXB 13 02 47.6541729594 -63 50 08.625922862 10.34 10.72 9.98 10.03   O9.5Ve 710 0
8 V* V479 Sct HXB 18 26 15.0561532140 -14 50 54.249464136 12.02 12.23 11.27 11.04   ON6V((f))z 517 2
9 NAME XMMU J183245-0921539 XB* 18 32 45.162 -09 21 54.55           ~ 18 0
10 SS 433 HXB 19 11 49.5645897700 +04 58 57.824087535   16.3 13.0     A7Ib: 1996 4
11 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 4047 0
12 V* V1521 Cyg HXB 20 32 25.78 +40 57 27.9           WN4/5-6/7 1832 2
13 HD 215227 Be* 22 42 57.30295 +44 43 18.2525 8.07 8.86 8.81     B1.5-B2III 94 1

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2021.12.04-15:57:48

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