SIMBAD references

2013MNRAS.436.1408Q - Mon. Not. R. Astron. Soc., 436, 1408-1414 (2013/December-1)

A search for substellar objects orbiting the sdB eclipsing binary HS 0705+6700.

QIAN S.-B., SHI G., ZOLA S., KOZIEL-WIERZBOWSKA D., WINIARSKI M., SZYMANSKI T., OGLOZA W., LI L.-J., ZHU L.-Y., LIU L., HE J.-J., LIAO W.-P., ZHAO E.-G., WANG J.-J., ZHANG J. and JIANG L.-Q.

Abstract (from CDS):

By using 78 newly determined timings of light minima together with those collected from the literature, we analysed the changes in the observed minus calculated (O-C) diagram in HS 0705+6700, a short-period (2.3h) eclipsing binary that consists of a very hot subdwarf B-type (sdB) star and a very cool fully convective red dwarf. We confirmed the cyclic variation in the O-C and refined the parameters of the circumbinary brown dwarf (reported to orbit the binary system in 2009) by analysing the changes for the light travel time effect that arises from the gravitational influence of the third body. Our results indicate the lower mass limit of the third body to be M3sini' = 33.7(±1.6)MJup. This companion would be a brown dwarf if its orbital inclination is larger than 27 _.^○7 and it is orbiting the central eclipsing binary with an eccentricity e ∼ 0.2 at a separation of about 3.7(±0.1) au.

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

Journal keyword(s): binaries: close - binaries: eclipsing - brown dwarfs - stars: individual: HS 0705+6700 - subdwarfs

Simbad objects: 5

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2023.02.01-00:43:50

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