SIMBAD references

2013MNRAS.436.1694R - Mon. Not. R. Astron. Soc., 436, 1694-1707 (2013/December-1)

Long-baseline interferometric multiplicity survey of the Sco-Cen OB association.

RIZZUTO A.C., IRELAND M.J., ROBERTSON J.G., KOK Y., TUTHILL P.G., WARRINGTON B.A., HAUBOIS X., TANGO W.J., NORRIS B., TEN BRUMMELAAR T., KRAUS A.L., JACOB A. and LALIBERTE-HOUDEVILLE C.

Abstract (from CDS):

We present the first multiplicity-dedicated long-baseline optical interferometric survey of the Scorpius-Centaurus-Lupus-Crux association. We used the Sydney University Stellar Interferometer to undertake a survey for new companions to 58 Sco-Cen B-type stars and have detected 24 companions at separations ranging from 7 to 130mas, 14 of which are new detections. Furthermore, we use a Bayesian analysis and all available information in the literature to determine the multiplicity distribution of the 58 stars in our sample, showing that the companion frequency is f = 1.35±0.25 and the mass ratio distribution is best described by qγ with γ = -0.46, agreeing with previous Sco-Cen high-mass work and differing significantly from lower mass stars in Tau-Aur. Based on our analysis, we estimate that among young B-type stars in moving groups, up to 23 percent are apparently single stars. This has strong implications for the understanding of high-mass star formation, which requires angular momentum dispersal through some mechanism such as formation of multiple systems.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): methods: statistical - techniques: high angular resolution - techniques: interferometric - binaries: close - stars: formation - open clusters and associations: individual: Sco-Cen

Simbad objects: 72

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2019.12.05-23:18:13

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