Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21542406c&link_type=abstract
American Astronomical Society, AAS Meeting #215, #424.06; Bulletin of the American Astronomical Society, Vol. 42, p.331
Astronomy and Astrophysics
Astronomy
Scientific paper
Since the year 2000, our institutions have been engaged in a study of the nearby dwarf and giant stars earlier than spectral type M0 in the Hipparcos catalog and within 40 parsecs of the Sun (3600 stars). This study has used classification-resolution spectra to provide new, precise spectral types and basic physical parameters (effective temperature, surface gravity and metallicity). In addition, we are providing measures of the chromospheric activity for these stars. Results so far have been published in Gray et al. (2003, 2006). Here we outline the continuation of this study to which recent improvements have been made. These are both to the estimation of chromospheric activity, now closer to the Mount Wilson system, and to the derivation of stellar parameters through use of Kurucz's newer, Atlas12 atmospheric models. For a limited, improved sample, activity and evolutionary age are compared.
Song J.
Corbally Christopher J.
Gray Richard O.
No associations
LandOfFree
Results from the Nearby Stars (NStars) Program: Chromospheric Activity in a Sample of Nearby Solar Analogs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Results from the Nearby Stars (NStars) Program: Chromospheric Activity in a Sample of Nearby Solar Analogs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Results from the Nearby Stars (NStars) Program: Chromospheric Activity in a Sample of Nearby Solar Analogs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-967255