MV Lyrae - A spectroscopic study of the low state

Details MV Lyrae - A spectroscopic study of the low state MV Lyrae - A spectroscopic study of the low state

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...245..644s&link_type=abstract

Astrophysical Journal, Part 1, vol. 245, Apr. 15, 1981, p. 644-649.

Astronomy and Astrophysics

Astrophysics

47

Binary Stars, Dwarf Stars, Emission Spectra, Novae, Stellar Spectra, Stellar Spectrophotometry, Absorption Spectra, Balmer Series, H Lines, Helium, Infrared Spectra, Line Spectra, Radial Velocity, Stellar Motions, X Ray Sources

Scientific paper

MV Lyrae is found to have a period of 0.1336 days from radial velocity variations. While in the low state the spectrum exhibits sharp, strong Balmer emission and sharp, weak He I emission. The radial velocity amplitude of the Balmer lines is 44 km/s; the He I lines have a lower amplitude of 16 km/s. Broad, shallow Balmer absorption and He II 4686 A absorption are also seen. Infrared observations show TiO bands and the Na I 8183-8194 A lines; these features arise from an M5V red dwarf in the system. The infrared spectrum combined with four-color photometry yields a distance estimate of 320 pc to MV Lyr.

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