Optical Photometry of TT Ari Simultaneous with the Suzaku Satellite Observations: QPOs in the Negative Superhump State

Details Optical Photometry of TT Ari Simultaneous with the Suzaku Satellite Observations: QPOs in the Negative Superhump State Optical Photometry of TT Ari Simultaneous with the Suzaku Satellite Observations: QPOs in the Negative Superhump State

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atel.2122....1a&link_type=abstract

The Astronomer's Telegram, #2122

Astronomy and Astrophysics

Astronomy

1

Optical, X-Ray, Binaries, Cataclysmic Variables, Variables

Scientific paper

In the "vsnet-alert 11316", Akira Imada called for simultaneous X- ray/optical observations of TT Ari for July 6,7. We observed the star using two 40- cm telescopes in Ukraine (V filter) and Greece (no filter, i.e. "wide R"). As a main comparison star, "c" was used with V=10.99 (Goetz 1985, IBVS 2823) and R=10.41 (Efimov et al., 1998, BCrAO, 94, 115). The mean brightness is R~11.21, which is consistent with the bottom brightness level observed for the "negative superhump" state (Kim et al., 2009&A, 496, 765).

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