Further Cousins VRI photometry of the Hyades and M67

Details Further Cousins VRI photometry of the Hyades and M67 Further Cousins VRI photometry of the Hyades and M67

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96..218j&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 96, July 1988, p. 218-221.

Astronomy and Astrophysics

Astronomy

15

Infrared Photometry, Stellar Spectrophotometry, Variability, Color-Magnitude Diagram, Globular Clusters, Open Clusters, Stellar Temperature

Scientific paper

The authors report new V magnitudes and/or (VRI)C colors for 17 Hyads and 11 bright M67 stars. They find that a source of variation in the Hyads (probably chromospheric variation) can change R-I while leaving V-R unaffected. The V magnitude can also vary, but is uncorrelated with R-I. The timescale for color variation is roughly a week; V magnitudes can vary on timescales from weeks to years.

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