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Detection of the irradiated donor in the LMXBs 4U 1636-536 (=V801 Ara) and 4U 1735-444 (=V926 Sco)

Abstract:

Phase-resolved VLT spectroscopy of the bursting low-mass X-ray binaries 4U 1636-536/V801 Ara and 4U 1735-444/V926 Sco is presented. Doppler images of the N III λ4640 Bowen transition reveal compact spots which we attribute to fluorescent emission from the donor star and enable us to define a new set of spectroscopic ephemerides. We measure K em = 277 ± 22 and 226 ± 22 kms -1 from the N III spots in V801 Ara and V926 Sco, respectively, which re...

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Casares, J More by this author
Cornelisse, R More by this author
Steeghs, D More by this author
Charles, PA More by this author
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Journal:
Monthly Notices of the Royal Astronomical Society
Volume:
373
Issue:
3
Pages:
1235-1244
Publication date:
2006-12-05
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
URN:
uuid:9f9986cc-4a9d-48b7-a00d-f7605f67b3fb
Source identifiers:
361985
Local pid:
pubs:361985

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