SIMBAD references

2010MNRAS.405.1947M - Mon. Not. R. Astron. Soc., 405, 1947-1959 (2010/July-1)

A study of the interacting binary V393Scorpii.


Abstract (from CDS):

We present high-resolution J-band spectroscopy of V393Sco obtained with the Cryogenic High-Resolution Infrared Echelle Spectrograph (CRIRES) at the ESO Paranal Observatory along with a discussion of archival International Ultraviolet Explorer (IUE) spectra and published broad-band magnitudes. The best fit to the spectral energy distribution outside eclipse gives K for the gainer, for the donor, mag and a distance of pc, although circumstellar material was not considered in the fit. We argue that V393Sco is not a member of the open cluster M7. The shape of the Hei 1083-nm line shows orbital modulations that can be interpreted in terms of an optically thick pseudo-photosphere mimicking a hot B-type star and relatively large equatorial mass loss through the Lagrangian L3 point during long cycle minimum. IUE spectra show several (usually asymmetric) absorption lines from highly ionized metals and a narrow L emission core on a broad absorption profile. The overall behaviour of these lines suggests the existence of a wind at intermediate latitudes. From the analysis of the radial velocities (RVs) we find M2/M1= 0.24±0.02 and a mass function of f = 4.76±0.24M. Our observations favour equatorial mass loss rather than high-latitude outflows as the cause for the long variability.

Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS

Journal keyword(s): stars: early-type - stars: evolution - stars: mass-loss - stars: emission-line, Be - stars: variables: general

Simbad objects: 10

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