H-R Diagrams Based on the HD Stars in the Michigan Spectral Catalogue and the Hipparcos Catalog

Details H-R Diagrams Based on the HD Stars in the Michigan Spectral Catalogue and the Hipparcos Catalog H-R Diagrams Based on the HD Stars in the Michigan Spectral Catalogue and the Hipparcos Catalog

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aj....134.1089s&link_type=abstract

The Astronomical Journal, Volume 134, Issue 3, pp. 1089-1102 (2007).

Statistics

9

Catalogs, Galaxy: Stellar Content, Hertzsprung-Russell Diagram, Stars: Statistics

Scientific paper

The systematic, spectroscopic two-dimensional classification of the HD stars by N. H. is approximately three-quarters complete. Over 161,000 stars have been classified visually using 10° objective-prism plates (2 Å resolution) taken at CTIO with the Michigan Curtis Schmidt telescope. The published portion of this large, homogeneous database, taken from volumes 1-5 of the Michigan Spectral Catalogue (declination -90° to +5°), has been used to create an H-R diagram. The Hipparcos parallax measurements provide a large homogenous database, too. H-R diagrams of the HD stars found in both catalogs are produced for distances to 20, 50, 100, and 200 pc.

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