Structure and evolution of nearby stars with planets.: II.: Physical properties of ∼ 1000 cool stars from the SPOCS Catalog

被引:263
作者
Takeda, Genya [1 ]
Ford, Eric B.
Sills, Alison
Rasio, Frederic A.
Fischer, Debra A.
Valenti, Jeff A.
机构
[1] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA
[2] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA
[3] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada
[4] San Francisco State Univ, Dept Phys & Astron, San Francisco, CA 94132 USA
[5] Space Telescope Sci Inst, Baltimore, MD 21218 USA
关键词
planetary systems; stars : fundamental parameters; stars : interiors;
D O I
10.1086/509763
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We derive detailed theoretical models for 1074 nearby stars from the SPOCS (Spectroscopic Properties of Cool Stars) Catalog. The California and Carnegie Planet Search has obtained high-quality (R similar or equal to 70,000-90, 000, S/N similar or equal to 300-500) echelle spectra of over 1000 nearby stars taken with the Hamilton spectrograph at Lick Observatory, the HIRES spectrograph at Keck, and UCLES at the Anglo Australian Observatory. A uniform analysis of the high-resolution spectra has yielded precise stellar parameters (T-eff, log g, v sin i, [M/H], and individual elemental abundances for Fe, Ni, Si, Na, and Ti), enabling systematic error analyses and accurate theoretical stellar modeling. We have created a large database of theoretical stellar evolution tracks using the Yale Stellar Evolution Code (YREC) to match the observed parameters of the SPOCS stars. Our very dense grids of evolutionary tracks eliminate the need for interpolation between stellar evolutionary tracks and allow precise determinations of physical stellar parameters ( mass, age, radius, size and mass of the convective zone, surface gravity, etc.). Combining our stellar models with the observed stellar atmospheric parameters and uncertainties, we compute the likelihood for each set of stellar model parameters separated by uniform time steps along the stellar evolutionary tracks. The computed likelihoods are used for a Bayesian analysis to derive posterior probability distribution functions for the physical stellar parameters of interest. We provide a catalog of physical parameters for 1074 stars that are based on a uniform set of high-quality spectral observations, a uniform spectral reduction procedure, and a uniform set of stellar evolutionary models. We explore this catalog for various possible correlations between stellar and planetary properties, which may help constrain the formation and dynamical histories of other planetary systems.
引用
收藏
页码:297 / 318
页数:22
相关论文
共 145 条
[1]   LOW-TEMPERATURE ROSSELAND OPACITIES [J].
ALEXANDER, DR ;
FERGUSON, JW .
ASTROPHYSICAL JOURNAL, 1994, 437 (02) :879-891
[2]   MODEL ATMOSPHERES FOR M (SUB)DWARF STARS .1. THE BASE MODEL GRID [J].
ALLARD, F ;
HAUSCHILDT, PH .
ASTROPHYSICAL JOURNAL, 1995, 445 (01) :433-450
[3]  
ARRIBAS S, 1989, ASTRON ASTROPHYS, V215, P305
[4]   CHROMOSPHERIC VARIATIONS IN MAIN-SEQUENCE STARS .2. [J].
BALIUNAS, SL ;
DONAHUE, RA ;
SOON, WH ;
HORNE, JH ;
FRAZER, J ;
WOODARDEKLUND, L ;
BRADFORD, M ;
RAO, LM ;
WILSON, OC ;
ZHANG, Q ;
BENNETT, W ;
BRIGGS, J ;
CARROLL, SM ;
DUNCAN, DK ;
FIGUEROA, D ;
LANNING, HH ;
MISCH, A ;
MUELLER, J ;
NOYES, RW ;
POPPE, D ;
PORTER, AC ;
ROBINSON, CR ;
RUSSELL, J ;
SHELTON, JC ;
SOYUMER, T ;
VAUGHAN, AH ;
WHITNEY, JH .
ASTROPHYSICAL JOURNAL, 1995, 438 (01) :269-287
[5]   Circumstellar disks and the search for neighbouring planetary systems [J].
Beckwith, SVW ;
Sargent, AI .
NATURE, 1996, 383 (6596) :139-144
[6]   An excess due to small grains around the nearby K0V star HD 69830: Asteroid or cometary debris? [J].
Beichman, CA ;
Bryden, G ;
Gautier, TN ;
Stapelfeldt, KR ;
Werner, MW ;
Misselt, K ;
Rieke, G ;
Stansberry, J ;
Trilling, D .
ASTROPHYSICAL JOURNAL, 2005, 626 (02) :1061-1069
[7]   Planets and infrared excesses:: Preliminary results from a Spitzer MIPS survey of solar-type stars [J].
Beichman, CA ;
Bryden, G ;
Rieke, GH ;
Stansberry, JA ;
Trilling, DE ;
Stapelfeldt, KR ;
Werner, MW ;
Engelbracht, CW ;
Blaylock, M ;
Gordon, KD ;
Chen, CH ;
Su, KYL ;
Hines, DC .
ASTROPHYSICAL JOURNAL, 2005, 622 (02) :1160-1170
[8]  
BERTELLI G, 1994, ASTRON ASTROPHYS SUP, V106, P275
[9]   LITHIUM, AGE, AND METALLICITY IN OPEN CLUSTERS [J].
BOESGAARD, AM .
ASTROPHYSICAL JOURNAL, 1991, 370 (02) :L95-L97
[10]  
Bohm-Vitense E., 1958, Z. Astrophys., V46, P108