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Automated spectral classification and the GAIA projectTwo dimensional spectral types for each of the stars observed in the global astrometric interferometer for astrophysics (GAIA) mission would provide additional information for the galactic structure and stellar evolution studies, as well as helping in the identification of unusual objects and populations. The classification of the large quantity generated spectra requires that automated techniques are implemented. Approaches for the automatic classification are reviewed, and a metric-distance method is discussed. In tests, the metric-distance method produced spectral types with mean errors comparable to those of human classifiers working at similar resolution. Data and equipment requirements for an automated classification survey, are discussed. A program of auxiliary observations is proposed to yield spectral types and radial velocities for the GAIA-observed stars.
Document ID
19960012028
Document Type
Conference Paper
Authors
Lasala, Jerry (University of Southern Maine Portland, ME, United States)
Kurtz, Michael J. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA., United States)
Date Acquired
August 17, 2013
Publication Date
September 1, 1995
Publication Information
Publication: ESA, Future Possibilities for Astrometry in Space
Subject Category
ASTROPHYSICS
Distribution Limits
Public
Copyright
Other