Circular polarization in the DQ Herculis binary 3A 0729 + 103

Details Circular polarization in the DQ Herculis binary 3A 0729 + 103 Circular polarization in the DQ Herculis binary 3A 0729 + 103

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...301..881p&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 301, Feb. 15, 1986, p. 881-885.

Astronomy and Astrophysics

Astrophysics

64

Binary Stars, Circular Polarization, Magnetic Stars, Optical Polarization, Stellar Spectrophotometry, White Dwarf Stars, Cyclotron Radiation, Polarimetry, Stellar Mass Accretion

Scientific paper

The authors present optical circular polarimetry of the 13th magnitude long-period DQ Her star 3A 0729+103. For the first time, circular polarization has been detected from a member of this class of objects. Observations in the λλ6400 - 8600 spectral region in January and March of 1985 produced results of -0.347±0.067% and -0.236±0.057%, respectively, with an overall result of -0.239±0.030%. No modulation with the rotational period of the white dwarf is seen. Possible polarization mechanisms in the magnetic field of the white dwarf primary star are discussed.

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