Radial velocities of R Leo near the maximum of 1984

Details Radial velocities of R Leo near the maximum of 1984 Radial velocities of R Leo near the maximum of 1984

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pazh...16...44d&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 16, Jan. 1990, p. 44-51. In Russian. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

Absorption Spectra, Line Spectra, Radial Velocity, Stellar Atmospheres, Stellar Spectra, Hydroxyl Emission, Spectrograms, Stellar Activity, Velocity Distribution

Scientific paper

The radial velocities of R Leo were measured using spectrograms with a dispersion of 13.5 A/mm and more than 400 lines in the visual region. The line distributions and average excitation potential of lines over the observed velocities are in agreement with a two-shock model of the star's atmosphere near maximum. The observed velocities are compared with earlier observations of R Leo, suggesting that an unusual outburst of OH 1665 MHz emission preceded the increase of pulsation activity at the beginning of 1980.

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