Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...332..561a&link_type=abstract
Astronomy and Astrophysics, v.332, p.561-568 (1998)
Astronomy and Astrophysics
Astrophysics
25
Accretion, Accretion Disks, X-Rays: Stars, Stars: Individual: V 801 Ara, Stars: Individual: V 926 Sco, Stars: Neutron
Scientific paper
We present phase-resolved spectroscopy of the optical counterparts V 801 Ara and V 926 Sco of the low-mass X-ray binaries 1636-536 and 1735-444. To assist in the interpretation of the spectroscopic observations we derive new ephemerides for the photometric variations of both sources. Superior conjunction of the line emission region occurs at photometric phase ~ 0.7 in both sources, which indicates that these variations are dominated by a component originating from the point where the mass stream from the donor star intersects the outer disk. We find that the properties of 1636-536/V 801 Ara and 1735-444/V 926 Sco are very similar. Based on observations made at the European Southern Observatory, La Silla, Chile
Augusteijn Th.
de Jong Jeroen A.
Paradijs Jan van
van der Hooft F.
van Kerkwijk Marten Henric
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