Structure and evolution of nearby stars with planets. I. Short-period systems

Eric B. Ford*, Frederic A. Rasio, Alison Sills

*Corresponding author for this work

Research output: Contribution to journalArticle

61 Scopus citations

Abstract

Using the Yale stellar evolution code, we have calculated theoretical models for nearby stars with planetary-mass companions in short-period nearly circular orbits: 51 Pegasi, τ Bootis, υ Andromedae, ρ1 Cancri, and ρ Coronae Borealis. We present tables listing key stellar parameters such as mass, radius, age, and size of the convective envelope as a function of the observable parameters (luminosity, effective temperature, and metallicity), as well as the unknown helium fraction. For each star we construct best models based on recently published spectroscopic data and the present understanding of galactic chemical evolution. We discuss our results in the context of planet formation theory and, in particular, tidal dissipation effects and stellar metallicity enhancements.

Original languageEnglish (US)
Pages (from-to)411-429
Number of pages19
JournalAstrophysical Journal
Volume514
Issue number1 PART 1
StatePublished - Mar 20 1999

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Keywords

  • Planetary systems
  • Stars: fundamental parameters
  • Stars: interiors

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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