Basic Physical Parameters of Nearby G and K Giants and Subgiants

Details Basic Physical Parameters of Nearby G and K Giants and Subgiants Basic Physical Parameters of Nearby G and K Giants and Subgiants

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.7404r&link_type=abstract

American Astronomical Society, 201st AAS Meeting, #74.04; Bulletin of the American Astronomical Society, Vol. 34, p.1223

Astronomy and Astrophysics

Astronomy

Scientific paper

As part of the Nearby Stars (NStars) Program at Appalachian State University, we are determining the basic physical parameters of G and K giants and subgiants within 40 parsecs of the Sun ( ≈ 170 stars). Stellar radii are being determined using the Infrared Flux Method (IRFM, Blackwell & Lynas-Gray, 1994). Combining the radii with luminosity and parallax data, we are determining the effective temperatures; surface gravity is determined by combining the calculated radii with mass estimates from evolutionary models. Metallicities [M/H] are then determined using the simplex method of Gray et al. (2001).

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