Abstract
We report the results of an extensive set of optical and near-infrared photometry and spectroscopy of the double infrared source reported by Hartmann et al. (1995) as a potential counterpart for the Galactic soft gamma-ray repeater SGR 1900+14. These objects are found to be variable but otherwise normal M5 supergiant stars at a distance of ≈ 12-15 kpc and extinguished by Av ≈ 19.2 mag, primarily by the general interstellar medium. We argue that the supergiants are likely gravitationally bound. These stars are positionally coincident with both quiescent X-ray and IRAS sources, suggestive of a yet-undetected third component to the system which may be responsible for the SGR.
Original language | English (US) |
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Pages (from-to) | 225-230 |
Number of pages | 6 |
Journal | Astrophysical Journal |
Volume | 468 |
Issue number | 1 PART I |
DOIs | |
State | Published - 1996 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science
Keywords
- Gamma rays: bursts
- Gamma rays: observations
- Supergiants