MULTIWAVELENGTH OBSERVATIONS OF THE RUNAWAY BINARY HD 15137
In: Astronomical Journal, 139, 857 (2010-03, 2010
Online
academicJournal
Zugriff:
peer reviewed ; HD 15137 is an intriguing runaway O-type binary system that offers a rare opportunity to explore the mechanism by which it was ejected from the open cluster of its birth. Here, we present recent blue optical spectra of HD 15137 and derive a new orbital solution for the spectroscopic binary and physical parameters of the O star primary. We also present the first XMM-Newton observations of the system. Fits of the EPIC spectra indicate soft, thermal X-ray emission consistent with an isolated O star. Upper limits on the undetected hard X-ray emission place limits on the emission from a proposed compact companion in the system, and we rule out a quiescent neutron star (NS) in the propeller regime or a weakly accreting NS. An unevolved secondary companion is also not detected in our optical spectra of the binary, and it is difficult to conclude that a gravitational interaction could have ejected this runaway binary with a low mass optical star. HD 15137 may contain an elusive NS in the ejector regime or a quiescent black hole with conditions unfavorable for accretion at the time of our observations.
Titel: |
MULTIWAVELENGTH OBSERVATIONS OF THE RUNAWAY BINARY HD 15137
|
---|---|
Autor/in / Beteiligte Person: | McSwain, M. V. ; De Becker, Michaël ; Roberts, M. S. E. ; Boyajian, T. S. ; Gies, D. R. ; Grundstrom, E. D. ; Aragona, C. ; Marsh, A. N. ; Roettenbacher, R. M. |
Link: | |
Zeitschrift: | Astronomical Journal, 139, 857 (2010-03, 2010 |
Veröffentlichung: | Univ Chicago Press, 2010 |
Medientyp: | academicJournal |
ISSN: | 0004-6256 (print) ; 1538-3881 (print) |
DOI: | 10.1088/0004-6256/139/3/857 |
Schlagwort: |
|
Sonstiges: |
|