A third harmonic in the radial velocity of the AM HER system EF Eridani (= 2A 0311-277)

Details A third harmonic in the radial velocity of the AM HER system EF Eridani (= 2A 0311-277) A third harmonic in the radial velocity of the AM HER system EF Eridani (= 2A 0311-277)

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...190l..29o&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 190, no. 1-2, Jan. 1988, p. L29-L31.

Astronomy and Astrophysics

Astrophysics

2

Binary Stars, Radial Velocity, Stellar Magnetic Fields, Stellar Mass Accretion, White Dwarf Stars, Cross Correlation, H Lines, Stellar Spectra

Scientific paper

The cross-correlation technique has been used to detect a third harmonic in the radial velocity of EF Eridani as a function of phase; this behavior, inexplicable in terms of either Zeeman splitting or radiative transfer effects, is presently characterized in kinematic terms. It is suggested that the absorbing material possesses a higher radial velocity than the underlying emitting material, so that either the material is decelerated along the accretion stream or the stream is peculiarly curved.

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