On the binary nature of AM Herculis

Details On the binary nature of AM Herculis On the binary nature of AM Herculis

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...212l.117p&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 212, Mar. 15, 1977, p. L117-L119.

Astronomy and Astrophysics

Astrophysics

41

Eclipsing Binary Stars, Stellar Spectra, Variable Stars, X Ray Stars, Emission Spectra, Helium, Hydrogen, Radial Velocity, X Ray Binaries

Scientific paper

Emission lines of hydrogen and helium observed in the spectrum of AM Her show a 3.1-hour radial-velocity variation. The period and amplitude of the variation indicate a close low-mass system different from previously known X-ray binaries. The period of the radial-velocity variation is significantly different from the period of optical-polarization variation.

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