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Extrasolar planets: A galactic perspective

Published online by Cambridge University Press:  22 October 2009

I. Neill Reid
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
Mario Livio
Affiliation:
Space Telescope Science Institute, Baltimore
Kailash Sahu
Affiliation:
Space Telescope Science Institute, Baltimore
Jeff Valenti
Affiliation:
Space Telescope Science Institute, Baltimore
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Summary

The host stars of extrasolar planets (ESPs) tend to be metal rich. We have examined other properties of these stars in search of systematic trends that might distinguish exoplanet hosts from the hoi polloi of the Galactic disk; we find no evidence for such trends among the present sample. The α-element abundance ratios show that several ESP hosts are likely to be members of the thick disk population, indicating that planet formation has occurred throughout the full lifetime of the Galactic disk. We briefly consider the radial metallicity gradient and age-metallicity relation of the Galactic disk, and complete a back-of-the-envelope estimate of the likely number of solar-type stars with planetary companions with 6 < R < 10 kpc.

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A Decade of Extrasolar Planets around Normal Stars
Proceedings of the Space Telescope Science Institute Symposium, held in Baltimore, Maryland May 2–5, 2005
, pp. 26 - 35
Publisher: Cambridge University Press
Print publication year: 2008

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  • Extrasolar planets: A galactic perspective
    • By I. Neill Reid, Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
  • Edited by Mario Livio, Space Telescope Science Institute, Baltimore, Kailash Sahu, Space Telescope Science Institute, Baltimore, Jeff Valenti, Space Telescope Science Institute, Baltimore
  • Book: A Decade of Extrasolar Planets around Normal Stars
  • Online publication: 22 October 2009
  • Chapter DOI: https://doi.org/10.1017/CBO9780511536304.005
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  • Extrasolar planets: A galactic perspective
    • By I. Neill Reid, Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
  • Edited by Mario Livio, Space Telescope Science Institute, Baltimore, Kailash Sahu, Space Telescope Science Institute, Baltimore, Jeff Valenti, Space Telescope Science Institute, Baltimore
  • Book: A Decade of Extrasolar Planets around Normal Stars
  • Online publication: 22 October 2009
  • Chapter DOI: https://doi.org/10.1017/CBO9780511536304.005
Available formats
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Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • Extrasolar planets: A galactic perspective
    • By I. Neill Reid, Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
  • Edited by Mario Livio, Space Telescope Science Institute, Baltimore, Kailash Sahu, Space Telescope Science Institute, Baltimore, Jeff Valenti, Space Telescope Science Institute, Baltimore
  • Book: A Decade of Extrasolar Planets around Normal Stars
  • Online publication: 22 October 2009
  • Chapter DOI: https://doi.org/10.1017/CBO9780511536304.005
Available formats
×