A uniform analysis of 118 stars with high-contrast imaging

Long-period extrasolar giant planets are rare around sun-like stars

Eric L. Nielsen, Laird M Close

Research output: Contribution to journalArticle

88 Citations (Scopus)

Abstract

We expand on the results of Nielsen et al., using the null result for giant extrasolar planets around the 118 target stars from the Very Large Telescope (VLT) NACO H- and Ks-band planet search (conducted by Masciadri and collaborators in 2003 and 2004), the VLT and MMT Simultaneous Differential Imager survey, and the Gemini Deep Planet Survey to set constraints on the population of giant extrasolar planets. Our analysis is extended to include the planet luminosity models of Fortney et al., as well as the correlation between stellar mass and frequency of giant planets found by Johnson et al. Doubling the sample size of FGKM stars strengthens our conclusions: a model for extrasolar giant planets with power laws for mass and semimajor axis as given by Cumming et al. cannot, with 95% confidence, have planets beyond 65AU, compared to the value of 94AU reported by Nielsen et al., using the models of Baraffe et al. When the Johnson et al. correction for stellar mass (which gives fewer Jupiter-mass companions to M stars with respect to solar-type stars) is applied, however, this limit moves out to 82AU. For the relatively new Fortney et al. models, which predict fainter planets across most of parameter space, these upper limits, with and without a correction for stellar mass, are 182 and 234AU, respectively.

Original languageEnglish (US)
Pages (from-to)878-896
Number of pages19
JournalAstrophysical Journal
Volume717
Issue number2
DOIs
StatePublished - 2010

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planets
sun
planet
stars
stellar mass
extrasolar planets
telescopes
M stars
analysis
Jupiter (planet)
confidence
Jupiter
luminosity
power law

Keywords

  • planetary systems

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

A uniform analysis of 118 stars with high-contrast imaging : Long-period extrasolar giant planets are rare around sun-like stars. / Nielsen, Eric L.; Close, Laird M.

In: Astrophysical Journal, Vol. 717, No. 2, 2010, p. 878-896.

Research output: Contribution to journalArticle

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