IDEAS home Printed from https://ideas.repec.org/a/nat/nature/v449y2007i7159d10.1038_nature06143.html
   My bibliography  Save this article

A giant planet orbiting the ‘extreme horizontal branch’ star V 391 Pegasi

Author

Listed:
  • R. Silvotti

    (INAF-Osservatorio Astronomico di Capodimonte, via Moiariello 16, 80131 Napoli, Italy)

  • S. Schuh

    (Institut für Astrophysik, Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany)

  • R. Janulis

    (Institute of Theoretical Physics and Astronomy, Vilnius University, 12 A. Gostauto Street, 01108 Vilnius, Lithuania)

  • J.-E. Solheim

    (Institutt for Teoretisk Astrofysikk, Universitetet i Oslo, PB 1029 Blindern, 0315, Norway)

  • S. Bernabei

    (INAF-Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, Italy)

  • R. Østensen

    (K. U. Leuven, Institute of Astronomy, Celestijnenlaan 200D, 3001 Leuven, Belgium)

  • T. D. Oswalt

    (Florida Institute of Technology, 150 West University Boulevard, Melbourne, Florida 32901, USA)

  • I. Bruni

    (INAF-Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, Italy)

  • R. Gualandi

    (INAF-Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, Italy)

  • A. Bonanno

    (INAF-Osservatorio Astrofisico di Catania, via S. Sofia 78, 95123 Catania, Italy)

  • G. Vauclair

    (CNRS-UMR5572, Observatoire Midi-Pyrénées, Université Paul Sabatier, 14 avenue Edouard Belin, 31400 Toulouse, France)

  • M. Reed

    (Astronomy and Materials Science, Missouri State University, 901 S. National, Springfield, Missouri 65897, USA)

  • C.-W. Chen

    (Institute of Astronomy, National Central University, 300 Jhongda Road, Chung-Li 32054, Taiwan)

  • E. Leibowitz

    (Wise Observatory, Tel Aviv University)

  • M. Paparo

    (Konkoly Observatory, P O Box 67, H-1525 Budapest XII, Hungary)

  • A. Baran

    (Cracow Pedagogical University, ul. Podchorazych 2, 30-084 Cracow, Poland)

  • S. Charpinet

    (CNRS-UMR5572, Observatoire Midi-Pyrénées, Université Paul Sabatier, 14 avenue Edouard Belin, 31400 Toulouse, France)

  • N. Dolez

    (CNRS-UMR5572, Observatoire Midi-Pyrénées, Université Paul Sabatier, 14 avenue Edouard Belin, 31400 Toulouse, France)

  • S. Kawaler

    (12 Physics Hall, Iowa State University, Ames, Iowa 50011, USA)

  • D. Kurtz

    (Centre for Astrophysics, University of Central Lancashire)

  • P. Moskalik

    (Copernicus Astronomical Centre, ul. Bartycka 18, 00-716 Warsaw, Poland)

  • R. Riddle

    (Thirty Meter Telescope Project, 2632 E. Washington Blvd, Pasadena, California 91107, USA)

  • S. Zola

    (Cracow Pedagogical University, ul. Podchorazych 2, 30-084 Cracow, Poland
    Astronomical Observatory, Jagiellonian University, ul. Orla 171, 30-244 Cracow, Poland)

Abstract

Planets in the red Most of the more than 200 known extrasolar planets orbit main sequence stars similar to our Sun. When the hydrogen in their cores runs out, they will become red giants that can easily reach and engulf inner planets. This will happen to the Sun in about five billion years. After that the fate of Earth is uncertain, but the discovery of a planet orbiting a post-red-giant phase star suggests that it may survive in some form. The planet is in orbit 1.7 astronomical units (AU) from V 391 Pegasi. The maximum radius of the red giant phase was about 0.7 AU, and the distance of the planet during main sequence phase 1 AU. This shows that planets with orbital distances of less than 2 AU (which by definition includes the Sun) can survive the red giant expansion.

Suggested Citation

  • R. Silvotti & S. Schuh & R. Janulis & J.-E. Solheim & S. Bernabei & R. Østensen & T. D. Oswalt & I. Bruni & R. Gualandi & A. Bonanno & G. Vauclair & M. Reed & C.-W. Chen & E. Leibowitz & M. Paparo & A, 2007. "A giant planet orbiting the ‘extreme horizontal branch’ star V 391 Pegasi," Nature, Nature, vol. 449(7159), pages 189-191, September.
    • Handle: RePEc:nat:nature:v:449:y:2007:i:7159:d:10.1038_nature06143
    DOI: 10.1038/nature06143
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/nature06143
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1038/nature06143?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:nature:v:449:y:2007:i:7159:d:10.1038_nature06143. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.