Note on the nature of HD 179315

Details Note on the nature of HD 179315 Note on the nature of HD 179315

Jun 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pasp...93..330f&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 93, June-July 1981, p. 330-332. Research supported by the Natural Scienc

Astronomy and Astrophysics

Astronomy

3

Cepheid Variables, Light Curve, Stellar Spectrophotometry, Ubv Spectra, Classifications, Colorimetry

Scientific paper

MK classification and UBVRI photometry is carried out to determine whether the HD 179315 star is a cepheid or an ellipsoidal binary. The spectral type proved to be G1Ib, classifying the star as a seven-day cepheid. This is supported by UBVRI data, from which is derived E(B-V) = 0.48 plus or minus 0.03 on the Parsons-Bell color excess scale. The star is distinctly cooler than most seven-day cepheids, and is probably close to the red edge of the instability strip, which may account for its low amplitude of 0.3 magnitudes.

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