PARENT STARS OF EXTRASOLAR PLANETS III - RHO(1) CANCRI REVISITED

Citation
G. Gonzalez et Ad. Vanture, PARENT STARS OF EXTRASOLAR PLANETS III - RHO(1) CANCRI REVISITED, Astronomy and astrophysics (Berlin), 339(1), 1998, pp. 29-32
Citations number
17
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
00046361
Volume
339
Issue
1
Year of publication
1998
Pages
29 - 32
Database
ISI
SICI code
0004-6361(1998)339:1<29:PSOEPI>2.0.ZU;2-7
Abstract
New values of the atmospheric parameters of rho(1) Cnc are derived. Fr om spectroscopic analysis of very high S/N, high resolution spectra, w e obtain: T-eff = 5250 +/- 70 K, log g = 4.40 +/- 0.15 (cgs), xi(t) = 0.80 +/- 0.09 km s(-1), and [Fe/H] = 0.45 +/- 0.05. This temperature e stimate is consistent with other recent determinations by Gonzalez and Fuhrmann et al. We have also derived CNO abundances and set a new upp er limit on the lithium abundance of log epsilon = 0.50 +/- 0.15. From an analysis of the CN bands near 8000 Angstrom, we set a lower limit on the C-12/C-13 ratio of 30.