Detection of the optical counterparts of the 555 second X-ray pulsations from V471 Tauri

Details Detection of the optical counterparts of the 555 second X-ray pulsations from V471 Tauri Detection of the optical counterparts of the 555 second X-ray pulsations from V471 Tauri

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...331l..29r&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 331, Aug. 1, 1988, p. L29-L32.

Astronomy and Astrophysics

Astrophysics

25

Hot Stars, Pulsars, Stellar Rotation, Taurus Constellation, White Dwarf Stars, X Ray Binaries, Eclipsing Binary Stars, Magnetic Poles, Roche Limit, Stellar Mass

Scientific paper

The optical counterpart of the 555-s X-ray periodicity from V471 Tau has been detected based on high-speed photometry acquired using the 0.76 and 0.92 m McDonald Observatory telescopes. The fractional semiamplitude of the periodicity in the Johnson U band is found to vary from 9.7 x 10 to the -4th to less than 3.8 x 10 to the -4th. It is suggested that the observed periodicity could be caused either by rotation of the white dwarf, if it is magnetized and accretes material from the K2 V star, or by g-mode pulsations of the white dwarf.

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