Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977pasp...89..546s&link_type=abstract
Astronomical Society of the Pacific, Publications, vol. 89, Aug.-Sept. 1977, p. 546-549.
Astronomy and Astrophysics
Astronomy
13
Cepheid Variables, H Beta Line, Star Clusters, Stellar Spectrophotometry, Ubv Spectra, Optical Properties, Stellar Luminosity
Scientific paper
Four-color and H-beta photometry has been obtained of stars in the
galactic clusters NGC 7654 and M25. An analysis of these data shows
variable extinction in both clusters. The distance modulus of NGC 7654
is found to be 10.99 plus or minus 0.2 and that of M25 is 8.68 plus or
minus 0.1.
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