SIMBAD references

2005AJ....130..789E - Astron. J., 130, 789-793 (2005/August-0)

High-mass triple systems: the classical cepheid Y Carinae.

EVANS N.R., CARPENTER K.G., ROBINSON R., KIENZLE F. and DEKAS A.E.

Abstract (from CDS):

We have obtained a Hubble Space Telescope STIS ultraviolet high-dispersion echelle-mode spectrum of the binary companion of the double-mode classical Cepheid Y Car. The velocity measured for the hot companion from this spectrum is very different from reasonable predictions for binary motion, implying that the companion is itself a short-period binary. The measured velocity changed by 7 km/s during the 4 days between two segments of the observation, confirming this interpretation. We summarize ``binary'' Cepheids that are in fact members of a triple system and find that at least 44% are triples. The summary of information on Cepheids with orbits makes it likely that the fraction is underestimated.

Abstract Copyright:

Journal keyword(s): Stars: Binaries: Close - Stars: Variables: Cepheids - Stars: Evolution - Stars: Fundamental Parameters

Status at CDS:  

Simbad objects: 25

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2020.03.30-01:15:28

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