Other
Scientific paper
Nov 1967
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1967bott....4..149m&link_type=abstract
Boletín de los Observatorios de Tonantzintla y Tacubaya Vol. 4, pp. 149-196 (1967) (http://www.astroscu.unam.mx/bott/)
Other
145
Photometry, Galaxy: Open Clusters And Associations: General
Scientific paper
We have made multicolor photometric observations over the range of wavelength from 0.36 microns in the ultraviolet to 5.0 microns in the infrared, on 1063 stars in the regions of h and x Persei, Pleiades, Hyades, Orion, Praesepe M 67, Scorpio-Centaurus, Coma Berenices and Ursa Major stellar aggregates. Standard relations between V-R and the other colors are obtained by using the UBVRI photometry. These observations also have been used to derive photometric distances. The range in distance covered is over a factor of 100, from nearly 22 parsecs (Ursa Major-nucleus) to nearly 2300 parsecs (double cluster in Perseus). The same photometric results arc also used to define a zero-age main sequence for visual absolute magnitudes. The range in V-R is from -0.15 mag. to +1.00 mag. and the range in absolute magnitude is from, approximately, -4.0 to +7.43.
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