Hostname: page-component-7c8c6479df-p566r Total loading time: 0 Render date: 2024-03-28T15:49:47.165Z Has data issue: false hasContentIssue false

A Photometric Study of the Newly Discovered Eclipsing Cataclysmic Variable SDSS J040714.78–064425.1

Published online by Cambridge University Press:  05 March 2013

T. Ak*
Affiliation:
Istanbul University, Faculty of Science, Department of Astronomy and Space Sciences, 34119 University, Istanbul, Turkey
A. Retter
Affiliation:
Pennsylvania State University, Department of Astronomy and Astrophysics, University Park, PA 16802-6305, USA University of Sydney, School of Physics, Sydney NSW 2006, Australia
A. Liu
Affiliation:
Norcape Observatory, PO Box 300, Exmouth WA 6707, Australia
H. H. Esenoğlu
Affiliation:
Istanbul University Observatory Research and Application Center, 34119 Beyazıt, Istanbul, Turkey
*
FCorresponding author. Email: tanselak@istanbul.edu.tr
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We present the results obtained from unfiltered photometric CCD observations of the newly discovered cataclysmic variable SDSS J040714.78–064425.1 made during seven nights in 2003 November. We establish the dwarf nova nature of the object as it was in outburst during our observations. We also confirm the presence of deep eclipses with a period of 0.17017 ± 0.00003 d in the optical light curve of the star. In addition, we found periods of 0.166 ± 0.001 d and possibly also 5.3 ± 0.7 d in the data. The 0.17017 d periodicity is consistent within the errors with the proposed orbital period of 0.165 and 0.1700 d. Using the known relation between the orbital and superhump periods, we interpret the 0.166 and 5.3 d periods as the negative superhump and the nodal precession period respectively. SDSS J040714.78–064425.1 is then classified as a negative superhump system with one of the largest orbital periods.

Type
Research Article
Copyright
Copyright © Astronomical Society of Australia 2005

References

Breger, M., et al. 1993, A&A, 271, 482Google Scholar
Downes, R. A., Webbink, R. F., & Shara, M. M. 1997, PASP, 109, 345 CrossRefGoogle Scholar
Ferraz-Mello, S. 1981, AJ, 86, 619 Google Scholar
Foster, G. 1995, AJ, 109, 1889 Google Scholar
Kozhevnikov, V. P. 2004, A&A, 419, 1035 Google Scholar
Nogami, D., Masuda, S., Kato, T., & Hirata, R. 1999, PASJ, 51, 115 Google Scholar
Patterson, J. 1999, in Disk Instabilities in Close Binary Systems, eds. S. Mineshige, & C. Wheeler (Tokyo: Universal Academic Press), 61 Google Scholar
Patterson, J. 2001, PASP, 113, 736 CrossRefGoogle Scholar
Patterson, J., Kemp, J., Saad, J., Skilman, D. R., Harvey, D., Fried, R., Thorstensen, J. R., & Ashley, R. 1997, PASP, 109, 468 Google Scholar
Retter, A., & Naylor, T. 2000, MNRAS, 319, 510 Google Scholar
Retter, A., Chou, Y., Bedding, T. R., & Naylor, T. 2002, MNRAS, 330, L37 Google Scholar
Retter, A., Hellier, C., Augusteijn, T., Naylor, T., Bedding, T. R., Bembrick, C., McCormick, J., & Velthius, F. 2003, MNRAS, 340, 679 Google Scholar
Roberts, D. H., Lehar, J., & Dreher, J. W. 1987, AJ, 93, 968 Google Scholar
Sperl, M. 1998, CoAst, 111, 1 Google Scholar
Szkody, P., et al. 2003, AJ, 126, 1499 Google Scholar
York, D. G., et al. 2000, AJ, 120, 1579 Google Scholar