The rotational velocities of the dwarf Cepheids and related stars

Details The rotational velocities of the dwarf Cepheids and related stars The rotational velocities of the dwarf Cepheids and related stars

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97..715m&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 97, Aug. 1985, p. 715-718. NSF-supported research.

Astronomy and Astrophysics

Astronomy

29

Cepheid Variables, Dwarf Stars, Radial Velocity, Stellar Rotation, Abundance, Hertzsprung-Russell Diagram, Stellar Spectrophotometry

Scientific paper

The projected apparent rotational velocities of the dwarf Cepheids are v sin i ≤ 20 km s-1 for the variables for which spectrograms have been secured at dispersions ≤20 Å mm-1. The rotational velocities are very small compared with the typical rotational velocity of δ Scuti variables. The dwarf Cepheids are also restricted to a much more confined region in the H-R diagram than the δ Scuti variables. Unlike many typical δ Scuti variables, no dwarf Cepheids are found near the ZAMS.

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