SIMBAD references

2021MNRAS.500..145E - Mon. Not. R. Astron. Soc., 500, 145-152 (2021/January-1)

Doppler profiles of the interacting contact binary W Corvi.

EATON J.A., ODELL A.P. and NITSCHELM C.

Abstract (from CDS):

We use spectra from 2011 and 2012 to investigate the distribution of local effective temperature and non-orbital velocity over the surface of the common envelope of this peculiar contact binary. There seems to be a hot surface flow from the more massive to the less massive (secondary) component, possibly equatorial, which extends roughly one quarter-way around both sides of that secondary star, corresponding to the hotspot postulated to explain the star's light-curve peculiarities. This feature is clear in the shape of the profiles of metallic lines, but it shows up in H α/H β profiles, as well. The profiles imply small flow velocities in contrast to those detected in some A-type W UMa systems, less than a few km s–1 for the primary but indeterminate for the secondary. We also classify the star's spectrum (G1-2 V) and present more radial velocities confirming the Rucinski-Lu radial-velocity solution.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): binaries: close - binaries: eclipsing - stars: individual: W Crv

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 14

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2021.07.28-14:14:14

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