VV Puppis and an Ursae Majoris - A radial velocity study

Details VV Puppis and an Ursae Majoris - A radial velocity study VV Puppis and an Ursae Majoris - A radial velocity study

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...240..871s&link_type=abstract

Astrophysical Journal, Part 1, vol. 240, Sept. 15, 1980, p. 871-884.

Astronomy and Astrophysics

Astrophysics

53

Binary Stars, Magnetic Stars, Radial Velocity, Stellar Spectra, Dwarf Stars, Emission Spectra, H Lines, Line Spectra, Particle Trajectories

Scientific paper

The observations of the emission lines of VV Puppis and AN Ursae Majoris show spectacular line variations in VV Puppis with a mean radial velocity amplitude of 376 km/s and clearly defined broad and sharp components. The AN UMa has similar, but less spectacular variations; the mean radial velocity of 256 km/s and the base and emission lines are 49 deg out of phase. Integration of particle trajectories in the Roche geometry where a dipole magnetic field dominates the gas flow confirms that gas is threaded on the magnetic field near the L(1) point from which it free-falls onto the favorably oriented magnetic pole of the white dwarf.

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