Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26as...92..565r&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 92, no. 3, Feb. 1992, p. 565-570. Research supported by CICY
Astronomy and Astrophysics
Astrophysics
2
Astronomical Photometry, H Beta Line, Open Clusters, Stellar Color, Stellar Composition, Abundance, G Stars, K Stars, Metallicity, Stellar Temperature, Ubv Spectra
Scientific paper
Photoelectric uvby and H-beta photometry has been obtained for 28 low-mass members in the Hyades cluster. The stars observed are G and K type stars of the lower main sequence with colors up to (b-y) = 0.8 mag, selected from the proper motion study of Van Altena (1969) with high probability of membership. Their position in the related four color and H-beta photometric diagrams is discussed. The derived values for the distance modulus and metallicity are compatible with the common accepted values for this cluster. The c1-(b-y) plane shows the persistence of the Hyades anomaly in the G star range, disappearing for late G and K spectral types. This result is in good agreement with previous results obtained by the authors for the Praesepe star cluster.
Fabregat Juan
Reglero Victor
Suso Julia
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