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 contributionpeer-review

    Abstract

    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
    Pages170-173
    Number of pages4
    ISBN (Print)9780735408869
    DOIs
    Publication statusPublished - 2011
    EventInternational Conference "Planetary Systems Beyond the Main Sequence" - Bamberg, Germany
    Duration: 11 Aug 201014 Aug 2010

    Publication series

    NameAIP conference proceedings
    Volume1331
    ISSN (Print)0094-243X

    Other

    OtherInternational Conference "Planetary Systems Beyond the Main Sequence"
    Country/TerritoryGermany
    CityBamberg
    Period11/08/1014/08/10

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