Radial velocity search for substellar companions to sdB stars

Simon O'Toole*, Ulrich Heber, Stephan Geier, Lew Classen, Orsola De Marco

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution


After the discovery of a substellar companion to the hot subdwarf HD 149382, we have started a radial velocity search for similar objects around other bright sdB stars using the Anglo-Australian Telescope. Our aim is to test the hypothesis that close substellar companions can significantly affect the post-main sequence evolution of solar-type stars. It has previously been proposed that binary interactions in this scenario could lead to the formation of hot subdwarfs. The detection of such objects will provide strong evidence that Jupiter-mass planets can survive the interaction with a solar-type star as it evolves up the Red Giant Branch. We present the first results of our search here.

Original languageEnglish
Title of host publicationPlanetary systems beyond the main sequence
Subtitle of host publicationproceedings of the international conference "Planetary Systems Beyond the Main Sequence"; Bamberg, Germany, 11-14 August 2010
EditorsSonja Schuh, Horst Drechsel, Ulrich Heber
Place of PublicationMelville, NY
PublisherAmerican Institute of Physics
Number of pages4
ISBN (Print)9780735408869
Publication statusPublished - 2011
EventInternational Conference "Planetary Systems Beyond the Main Sequence" - Bamberg, Germany
Duration: 11 Aug 201014 Aug 2010

Publication series

NameAIP conference proceedings
ISSN (Print)0094-243X


OtherInternational Conference "Planetary Systems Beyond the Main Sequence"

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