Structure and Evolution of Nearby Stars with Planets. I. Short‐Period Systems | Zendy

Eric B. Ford | Zendy; Frederic A. Rasio | Zendy; Alison Sills | Zendy

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Structure and Evolution of Nearby Stars with Planets. I. Short‐Period Systems

Author(s) -

Eric B. Ford,

Frederic A. Rasio,

Alison Sills

Publication year - 1999

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/306935

Subject(s) - physics , astrophysics , planet , metallicity , stars , astronomy , context (archaeology) , exoplanet , stellar evolution , radius , effective temperature , luminosity , planetary system , galaxy , computer science , biology , paleontology , computer security

Using the Yale stellar evolution code, we have calculated theoretical modelsfor nearby stars with planetary-mass companions in short-period nearly circularorbits: 51 Pegasi, Tau Bootis, Upsilon Andromedae, Rho Cancri, and Rho CoronaeBorealis. We present tables listing key stellar parameters such as mass,radius, age, and size of the convective envelope as a function of theobservable parameters (luminosity, effective temperature, and metallicity), aswell as the unknown helium fraction. For each star we construct best modelsbased on recently published spectroscopic data and the present understanding ofgalactic chemical evolution. We discuss our results in the context of planetformation theory, and, in particular, tidal dissipation effects and stellarmetallicity enhancements.Comment: 48 pages including 13 tables and 5 figures, to appear in Ap

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