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A detection of the donor star of Aquila X-1 during its 2004 outburst?

Abstract:

Phase-resolved high-resolution optical spectroscopy has revealed narrow N III and He II emission lines from the soft X-ray transient Aquila X-1 during its 2004 outburst that move as a function of the orbit consistent with the phasing of the donor star. Under the assumption that these lines come from the irradiated side of the donor star, we can constrain its K 2 velocity to ≥247 ± 8 kms -1 and derive a mass function of f(M ...

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Authors


Cornelisse, R More by this author
Casares, J More by this author
Steeghs, D More by this author
Barnes, AD More by this author
Charles, PA More by this author
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Journal:
Monthly Notices of the Royal Astronomical Society
Volume:
375
Issue:
4
Pages:
1463-1470
Publication date:
2007-03-05
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
URN:
uuid:8331a17e-843c-44db-92c3-0bbb483339b1
Source identifiers:
361984
Local pid:
pubs:361984

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