Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...302l..11r&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 302, March 1, 1986, p. L11-L15.
Astronomy and Astrophysics
Astrophysics
41
Late Stars, Magnetic Stars, Stellar Luminosity, Stellar Mass Accretion, White Dwarf Stars, X Ray Binaries, Circular Polarization, Emission Spectra, Spectral Line Width, Spectrum Analysis, Stellar Spectrophotometry, Visible Spectrum
Scientific paper
The authors report the discovery of an AM Herculis-type magnetic variable, H 0538+608. The object was located during a program to optically identify the X-ray sources detected with HEAO 1. The X-ray flux (2 - 10 keV) of H 0538+608 is exceeded by only two of the 10 previously observed AM Herculis-type systems. The optical spectrum shows very strong and broad emission lines of H, He I and He II. Photometric observations show modulations by a factor of 2, with B magnitudes between 15 and 16, and the source exhibits rapid flickering at a time scale of 10 s. Circular polarization measurements indicate variable optical polarization between 0 and 10%. The modulations in the polarization and the photometric magnitude suggest an orbital period of 3.1±0.2 hr.
Bradt Hale V.
McClintock Jeff E.
Patterson Jaclyn
Remillard Ron A.
Roberts William W.
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