Radial velocities of CH CYG in 1981

Details Radial velocities of CH CYG in 1981 Radial velocities of CH CYG in 1981

Jan 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984afz....20...99t&link_type=abstract

(Astrofizika, vol. 20, Jan.-Feb. 1984, p. 99-105) Astrophysics (ISSN 0571-7132), vol. 20, no. 1, July 1984, p. 65-69. Translatio

Astronomy and Astrophysics

Astrophysics

12

Binary Stars, Metallic Stars, Radial Velocity, Stellar Motions, Stellar Spectra, Variable Stars, Accretion Disks, Red Giant Stars, White Dwarf Stars

Scientific paper

Radial velocities of CH Cyg averaged over spectrograms for the period from the Julian date 2444604 and 2444956 are given separately for the absorption lines of ionized metals, for Fe II and forbidden Fe II emission lines, and also for absorption lines of neutral metals. It is shown that the absorption lines of the ionized metals measured in the ultraviolet and in the visible range reflect the motion of the hot component, while the lines of the neutral metals measured using infrared spectrograms reflect the motion of the cold component. The estimate 1:2 is obtained for the ratio of the masses of the hot source and the red giant. Arguments are advanced to show that the radial velocity of the center of gravity of CH Cyg is -58 km/sec and that the forbidden line of OI (6300 A) arises in circumstellar matter.

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