Systematic Effects on Photometric Parallaxes for FGK Dwarfs and Subdwarfs

Details Systematic Effects on Photometric Parallaxes for FGK Dwarfs and Subdwarfs Systematic Effects on Photometric Parallaxes for FGK Dwarfs and Subdwarfs

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997esasp.402..283j&link_type=abstract

Proceedings of the ESA Symposium `Hipparcos - Venice '97', 13-16 May, Venice, Italy, ESA SP-402 (July 1997), p. 283-286

Computer Science

4

Scientific paper

Hipparcos trigonometric parallaxes were used to establish a preliminary absolute magnitude calibration in terms of effective temperature, metallicity and evolutionary stage indicators for FGK dwarfs and subdwarfs. Photometric determinations of metallicity, needed to establish the calibration, were evaluated by the comparison with known spectroscopic metallicities. The new calibration removes systematic trends present in the calibrations available today and it decreases the rms of the residuals.

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