AAS 203rd Meeting, January 2004
Session 43 Nearby Stars: Observations
Poster, Tuesday, January 6, 2004, 9:20am-6:30pm, Grand Hall

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[43.03] Contributions to the NStars Program: Spectroscopy and Physical Parameters of the Solar-type Stars within 40 parsecs of the Sun.

R.O. Gray (Appalachian State Univ.), C.J. Corbally (Vatican Obs.), R.F. Garrison (David Dunlap Obs.), M.T. McFadden (Appalachian State Univ.), A.A. O'Donoghue, E.R. Knox (St. Lawrence Univ.), K.A. Kluttz, C.E. McGahee, E.J. Bubar, A.S. Forbus (Appalachian State Univ.)

During the past three years, Appalachian State University, the Vatican Observatory and the David Dunlap Observatory have been engaged in a Nearby Stars (NStars) project to obtain spectra of all dwarf and giant stars earlier than M0 within 40 parsecs of the Sun (3600 stars). This observational program is now 98% complete, and we have turned our full attention to the analysis of these spectra. We are using these spectra to provide new, precise spectral types and basic physical parameters (Teff, \log g and [M/H]). In addition we are providing measures of the chromospheric activity of these stars. This poster will discuss recent results of this program, including the basic physical parameters of stars with exoplanets, the discovery of stars with high levels of chromospheric activity, a refinement of the stellar census within 40 parsecs of the Sun and the possible presence of a significant population of ``Maunder Minimum'' dwarfs in the solar neighborhood. Observed and derived data from this project are being released on the project's website.

If you would like more information about this abstract, please follow the link to http://stellar.phys.appstate.edu. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: grayro@appstate.edu

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Bulletin of the American Astronomical Society, 35#5
© 2003. The American Astronomical Soceity.