The Library
Optical spectroscopy of the low-mass X-ray binary GX 9+9
Tools
Tools
Tools
Cornelisse, R., Steeghs, D., Casares, J., Charles, P. A., Barnes, A. D., Hynes, R. I. and O'Brien, K. (2007) Optical spectroscopy of the low-mass X-ray binary GX 9+9. Monthly Notices of the Royal Astronomical Society, Vol.380 (No.3). pp. 1219-1229. doi:10.1111/j.1365-2966.2007.12193.x ISSN 0035-8711.
|
Text
WRAP_Steeghs_Optical spectroscopy_0707.0449v1.pdf - Accepted Version Download (937Kb) | Preview |
Official URL: http://dx.doi.org/10.1111/j.1365-2966.2007.12193.x
Abstract
Phase-resolved medium-resolution VLT spectroscopy of the low-mass X-ray binary GX 9+9 has revealed narrow C ill emission lines that move in phase relative to our new estimate of the ephemeris, and show a velocity amplitude of 230 +/not superset of 35 km s(-1). We identify the origin of these lines as coming from the surface of the donor star, thereby providing the first estimate of the mass function of f(M-1) >= 0.22 M-circle dot. Rotational broadening estimates together with assumptions for the mass donor give 0.07 <= q <= 0.35 and 182 <= K-2 <= 406 km s(-1). Despite a low-mass ratio, there is no evidence for a superhump in our data set. Doppler maps of GX 9+9 show the presence of a stream overflow, either in the form of material flowing downward along the accretion disc rim or in a similar fashion as occurs in high mass transfer rate cataclysmic variables known as the SW Sex stars. Finally, we note that the Bowen region in GX 9+9 is dominated by C in instead of N III emission as has been the case for most other X-ray binaries.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | X-ray binaries | ||||
| Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||
| Publisher: | Wiley | ||||
| ISSN: | 0035-8711 | ||||
| Official Date: | 21 September 2007 | ||||
| Dates: |
|
||||
| Volume: | Vol.380 | ||||
| Number: | No.3 | ||||
| Number of Pages: | 11 | ||||
| Page Range: | pp. 1219-1229 | ||||
| DOI: | 10.1111/j.1365-2966.2007.12193.x | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Date of first compliant deposit: | 14 December 2015 | ||||
| Date of first compliant Open Access: | 14 December 2015 | ||||
| Funder: | European Union (EU), Spain. Ministerio de Ciencia e Innovación (MICINN), Smithsonian Astrophysical Observatory, United States. National Aeronautics and Space Administration (NASA), Particle Physics and Astronomy Research Council (Great Britain) (PPARC), Science and Technology Facilities Council (Great Britain) (STFC) | ||||
| Grant number: | MEIF-CT.2005-024685 (EU), AYA2002-03570 (MICINN) |
Data sourced from Thomson Reuters' Web of Knowledge
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
Downloads
Downloads per month over past year
