Further fast photometric observations of intermediate polar 3A0729+103

Details Further fast photometric observations of intermediate polar 3A0729+103 Further fast photometric observations of intermediate polar 3A0729+103

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26as...75...43v&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 75, no. 1, Oct. 1988, p. 43-46.

Astronomy and Astrophysics

Astrophysics

6

Cataclysmic Variables, Stellar Spectrophotometry, White Dwarf Stars, X Ray Binaries, Light Curve, Periodic Variations, Power Spectra, Stellar Motions

Scientific paper

Fast photometric obsaervations of the intermediate polar 3A0729+103 are reported. Strong optical pulsation at 913.48 sec, which is the spin period of the white dwarf, is detected along with an orbital modulation at 3.24 hr. The beat period pulsation is absent in this system. An improved pulsation period of 0.01057278 is derived. The spin-up rate is - 4.8 + or - 4.3 x 10 to the -11th day/day. The absence of the beat period indicates that reprocessing of X-rays by the atmosphere of the companion star does not occur in this system.

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