Radial velocity monitoring of long period hot subdwarf + main sequence binaries with HERMES@Mercator

Details Radial velocity monitoring of long period hot subdwarf + main sequence binaries with HERMES@Mercator Radial velocity monitoring of long period hot subdwarf + main sequence binaries with HERMES@Mercator

2011-12-05

arxiv.org/abs/1112.0977v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

To appear in ASP Conference Series; Proceedings of the fifth meeting on hot subdwarf stars and related objects (sdOB05), 25 -

Scientific paper

Population synthesis models predict that the majority of sdBs form through stable mass transfer leading to long period binaries. To date, about a hundred close short-period binaries with an sdB component have been found, but not a single long-period system has been established. We show preliminary results from our recent effort in determining orbits for a sample of long-period sdB systems using the HERMES spectrograph on the Mercator telescope.

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