A LUMINOUS COMPANION TO SGR-1806-20

被引：51

作者：

VANKERKWIJK, MH

KULKARNI, SR

MATTHEWS, K

NEUGEBAUER, G

机构：

[1] Palomar Observatory, California Inst. of Technol. 105-24, Pasadena

来源：

ASTROPHYSICAL JOURNAL | 1995年 / 444卷 / 01期

关键词：

GAMMA RAYS; BURSTS; STARS; INDIVIDUAL; (SGR; 1806-20); NEUTRON; X-RAYS;

D O I：

10.1086/187853

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have obtained infrared spectra of the star suggested to be the counterpart of the soft gamma-ray repeater (SGR) 1806-20. We found strong emission lines similar to those seen in the spectra of the rare luminous blue variables and B[e] stars. A He I absorption line is also seen, from which we infer a spectral type O9-B2. This classification, in combination with the minimum distance of greater than or similar to 6 kpc inferred from its extinction, makes the star one of the most luminous in the Galaxy. We infer that it is a companion to SGR 1806-20 and suggest that the presence of a companion is somehow related to the SGR phenomenon.

引用

页码：L33 / L35

页数：3

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