UBV observations of AC Herculis

Details UBV observations of AC Herculis UBV observations of AC Herculis

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979tokab.260.2969n&link_type=abstract

Tokyo Astronomical Observatory, Tokyo Astronomical Bulletin, Second Series, no. 260, June 21, 1979, p. 2969-2976.

Astronomy and Astrophysics

Astronomy

1

Light Curve, Stellar Spectrophotometry, Supergiant Stars, Ubv Spectra, Variable Stars, Late Stars, Stellar Magnitude, Tables (Data), Ultraviolet Astronomy, Visual Photometry

Scientific paper

UBV observations were carried out for the RV Tauri variable AC Herculis from April, 1974 to April 1979. The revised period of 75.01 days which can only be applied for recent years was tentatively obtained. An average light curve in V and average colour curves in B-V and U-B are given with the use of this period. Some departure from the exact regularity appears in phases from the primary minimum to the primary maximum. Photometric properties of the light and color variations are also presented.

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