BV 690, a new bright type II Cepheid

Details BV 690, a new bright type II Cepheid BV 690, a new bright type II Cepheid

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991japa...12..119s&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 12, no. 2, June 1991, p. 119-131.

Astronomy and Astrophysics

Astrophysics

3

Cepheid Variables, Ephemerides, Light Curve, Stellar Spectra, Astronomical Catalogs, Astronomical Photography, Eclipsing Binary Stars

Scientific paper

B and V observations of the suspected variable BV 690 = NSV 04298 are reported. The star shows light variations with a period of 1.2400 d and with amplitudes of 0.27, 0.36, and 0.11 m in V, B, and B-V respectively. The light curves show steeper rise than decline, and there is evidence for the presence of a bump in the descending branch around the phase of 0.35. From considerations of the period, spectral type, presence of the bump, and high tangential velocity is concluded that BV 690 belongs to the BL Herculis class of type II Cepheids.

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