The ultra short period Cepheid HD 94033

Details The ultra short period Cepheid HD 94033 The ultra short period Cepheid HD 94033

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.189..377p&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 189, Nov. 1979, p. 377-385.

Astronomy and Astrophysics

Astronomy

20

Astronomical Photometry, Cepheid Variables, Light Curve, Ubv Spectra, Abundance, Radial Velocity, Stellar Gravitation, Stellar Luminosity, Stellar Motions, Stellar Temperature

Scientific paper

The short-period Cepheid HD 94033 was discovered in a photometric survey of early-type stars with high proper motion. It has a period of 85 min 42 s and a visual amplitude of 0.8 mag, from 9.465 to 10.26. It is a high velocity star (radial velocity = + 267 km/s), moving around the center of the Galaxy in a highly eccentric and retrograde orbit. It is deficient in metals by a factor of 30 relative to the sun. It is the first known short-period Cepheid that clearly belongs to Population II.

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