- Abstract:
-
Two nights of phase-resolved medium-resolution Very Large Telescope spectroscopy of the extra-galactic low-mass X-ray binary LMC X-2 have revealed a 0.32 ± 0.02 d spectroscopic period in the radial velocity curve of the He ii λ4686 emission line that we interpret as the orbital period. However, similar to previous findings, this radial velocity curve shows a longer term variation that is most likely due to the presence of a precessing accretion disc in LMC X-2. This is strengthened by He ii λ...
Expand abstract - Publisher copy:
- 10.1111/j.1365-2966.2007.12233.x
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- Journal:
- Monthly Notices of the Royal Astronomical Society
- Volume:
- 381
- Issue:
- 1
- Pages:
- 194-200
- Publication date:
- 2007-10-05
- DOI:
- EISSN:
-
1365-2966
- ISSN:
-
0035-8711
- URN:
-
uuid:1e542971-1722-45f0-a59f-f5267b09f76a
- Source identifiers:
-
361979
- Local pid:
- pubs:361979
- Language:
- English
- Keywords:
- Copyright date:
- 2007
Journal article
A signature of the donor star in the extra-galactic X-ray binary LMC X-2
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