Astrophysical Aspects of the Contents of the Input Catalogue

Details Astrophysical Aspects of the Contents of the Input Catalogue Astrophysical Aspects of the Contents of the Input Catalogue

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985esasp.234...87e&link_type=abstract

Hipparcos. Scientific Aspects of the Input Catalogue Preparation, Proceedings of a Colloquium, held at Aussois, Savoie, France,

Astronomy and Astrophysics

Astrophysics

Scientific paper

The authors illustrate some aspects of the astrophysical contents of the HIPPARCOS Input Catalogue through the comparison of the complete merged file L3 with the file L3/SIM obtained as a result from the first simulation. The following astrophysical topics are considered: the upper part of the HR diagram; the red nearby stars; the distance scale; some problems of galactic structure; old population stars; binary stars with known orbit. The analysis shows, besides a general satisfactory percentage of inclusion for most important programs, an important limitation affecting the faintest red stars, good candidate for parallaxes, but penalized by the observing strategy.

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