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URL: https://iopscience.iop.org/article/10.1086/378365

⇱ Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I. - IOPscience

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Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I.

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© 2003. The American Astronomical Society. All rights reserved. Printed in U.S.A.
The Astronomical Journal, Volume 126, Number 4Citation R. O. Gray et al 2003 AJ 126 2048DOI 10.1086/378365

R. O. Gray

AFFILIATIONS

Department of Physics and Astronomy, Appalachian State University, Boone, NC 28608

C. J. Corbally

AFFILIATIONS

Vatican Observatory Research Group, Steward Observatory, 933 North Cherry Avenue, Tucson, AZ 85721-0065

R. F. Garrison

AFFILIATIONS

David Dunlap Observatory, P.O. Box 360, Station A, Richmond Hill, ON L4C 4Y6, Canada

M. T. McFadden

AFFILIATIONS

Department of Physics and Astronomy, Appalachian State University, Boone, NC 28608;

P. E. Robinson

AFFILIATIONS

Department of Physics and Astronomy, Appalachian State University, Boone, NC 28608;

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Dates

  1. Received 2003 May 8
  2. Accepted 2003 July 11
1538-3881/126/4/2048

Abstract

We have embarked on a project, under the aegis of the Nearby Stars (NStars)/Space Interferometry Mission Preparatory Science Program, to obtain spectra, spectral types, and, where feasible, basic physical parameters for the 3600 dwarf and giant stars earlier than M0 within 40 pc of the Sun. In this paper, we report on the results of this project for the first 664 stars in the northern hemisphere. These results include precise, homogeneous spectral types, basic physical parameters (including the effective temperature, surface gravity, and overall metallicity [M/H]), and measures of the chromospheric activity of our program stars. Observed and derived data presented in this paper are also available on the project's Web site.

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10.1086/378365