Galactic classical Cepheids - Gamma velocities

Details Galactic classical Cepheids - Gamma velocities Galactic classical Cepheids - Gamma velocities

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pasp...99.1206m&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 99, Nov. 1987, p. 1206-1208.

Astronomy and Astrophysics

Astronomy

19

Binary Stars, Cepheid Variables, Gamma Ray Spectra, Doppler Effect, Milky Way Galaxy, Radial Velocity

Scientific paper

The γ velocities for 61 galactic classical Cepheids have been determined from recent homogeneous radial-velocity measurements combined with older published velocities. The results confirm those of Caldwell and Coulson (1987), who used a largely different data set and an independent analysis. This makes it unlikely that the net blueshift of 3±1 km s-1 found by Caldwell and Coulson for galactic Cepheids is a result of approximations used in determining the γ velocities. The Cepheids Y Sct and Z Lac are found to be binary star candidates.

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