Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997abos.conf..375s&link_type=abstract
Conference Paper, Astronomical and Biochemical Origins and the Search for Life in the Universe, IAU Colloquium 161, Publisher: B
Astronomy and Astrophysics
Astronomy
Stellar Spectra, Astronomical Photometry, Planetary Systems, Interstellar Space, Stellar Systems, Astrometry, Astronomical Observatories, Image Classification
Scientific paper
The seven-color photometric system introduced by Vilnius astronomers during 1963-1967 makes possible a completely photometric determining of spectral classes (and temperatures), absolute magnitudes (and surface gravities), interstellar reddenings and distances of stars of all normal spectral types. Recently it was suggested that this system be joined with the Stromgren four-color system. The new seven-color system, called the Stromvil system, has the mean wavelengths of the passbands at 350, 375, 411, 467, 516, 547, and 656 nm and half-widths of the order of 20 nm. The system can be effectively used for detection and classification of solar-type stars, which are expected to be the best sites for existence of planetary systems and life.
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