The optical counterparts to Be/X-ray binaries in the Magellanic Clouds

被引：39

作者：

Stevens, JB ^{[1
]}

Coe, MJ

Buckley, DAH

机构：

[1] Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England

[2] S African Astron Observ, ZA-7935 Cape Town, South Africa

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1999年 / 309卷 / 02期

关键词：

binaries : general; stars; emission-line; Be; pulsars : general; Magellanic Clouds; infrared : stars; X-rays : stars;

D O I：

10.1046/j.1365-8711.1999.02847.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The fields of eight X-ray sources in the Magellanic Clouds believed to be Be/X-ray binaries have been searched for possible Be-star counterparts. BVRc and H alpha CCD imaging was employed to identify early-type emission stars through colour indices and Her fluxes. Spectroscopy of five sources confirms the presence of Ha emission in each case. Based on the positional coincidence of emission-line objects with the X-ray sources, we identify Be-star counterparts to the ROSAT sources RX J0032.9-7348, RX J0049.1-7250, RX J0054.9-7226 and RX J0101.0-7206, and to the recently discovered ASCA source AX J0051-722. We confirm the Be star nature of the counterpart to the HEAO1 source H0544-66. In the field of the ROSAT source RX J0051.8-7231 we find that there are three possible counterparts, each showing evidence for H alpha emission. We find a close double in the error circle of the EXOSAT source EXO 0531.1-6609, each component of which could be a Be star associated with the X-ray source.

引用

页码：421 / 429

页数：9

共 27 条

[1] DEEP EINSTEIN X-RAY IMAGERY OF THE SMALL MAGELLANIC CLOUD [J].

BRUHWEILER, FC ;

KLINGLESMITH, DA ;

GULL, TR ;

SOFIA, S .

ASTROPHYSICAL JOURNAL, 1987, 317 (01) :152-162

[2]

BUCKLEY DAH, 1998, IAU CIRC, P6789

[3] 2 NEW X-RAY SOURCES IN SMC AND HIGH LUMINOSITIES OF MAGELLANIC X-RAY SOURCES [J].

CLARK, G ;

DOXSEY, R ;

LI, F ;

JERNIGAN, JG ;

VANPARADIJS, J .

ASTROPHYSICAL JOURNAL, 1978, 221 (02) :L37-&

[4]

CORBET R, 1998, IAU CIRC, P6788

[5]

Corbet R., 1998, IAU CIRC, P6803

[6]

DEKOOL M, 1987, ASTRON ASTROPHYS, V183, P47

[7]

FEAST MW, 1961, MON NOT R ASTRON SOC, V122, P1

[8]

Grebel EK, 1997, ASTRON ASTROPHYS, V317, P448

[9]

INOUE H, 1983, P IAU S, V101, P237

[10] The discovery of 8.9 second pulsations from the variable X-ray source 2E 0050.1-7247 in the Small Magellanic Cloud [J].

Israel, GL ;

Stella, L ;

Angelini, L ;

White, NE ;

Giommi, P ;

Covino, S .

ASTROPHYSICAL JOURNAL, 1997, 484 (02) :L141-L144

← 1 2 3 →