Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pasp...98..881h&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 98, Sept. 1986, p. 881-888. Research supported by the U
Astronomy and Astrophysics
Astronomy
70
Cepheid Variables, Electrophotometers, Radial Velocity, Stellar Oscillations, Stellar Spectrophotometry, Spectrometers, Stellar Spectra, Stellar Temperature
Scientific paper
The authors have used synthetic stellar spectra to simulate observations of Cepheid variables with photoelectric radial-velocity spectrometers. They have found that the projection factor used to convert radial velocities to pulsation velocities depends on stellar temperature, overall stellar radial velocity, and pulsational velocity, as well as the method used to determine the radial velocity from the cross-correlation dip. The shape of the cross-correlation dip has been found to vary with the pulsation velocity and with the parameters of the stellar models.
Bell Roger A.
Hindsley Robert
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