Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-24T16:15:38.086Z Has data issue: false hasContentIssue false

Periodic Modulations in the Optical Light Curves of EX Hydrae

Published online by Cambridge University Press:  12 April 2016

S. Seetha
Affiliation:
ISRO Satellite Centre, Bangalore 560 017, India
D.P. Sharma
Affiliation:
ISRO Satellite Centre, Bangalore 560 017, India
V.N. Padmini
Affiliation:
ISRO Satellite Centre, Bangalore 560 017, India
T.M.K. Marar
Affiliation:
ISRO Satellite Centre, Bangalore 560 017, India
K. Kasturirangan
Affiliation:
ISRO Satellite Centre, Bangalore 560 017, India
U.R. Rao
Affiliation:
ISRO Satellite Centre, Bangalore 560 017, India
J.C. Bhattacharyya
Affiliation:
Indian Institute of Astrophysics, Bangalore 560 034, India

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 here new results on the periodic modulations in the optical light curves of EX Hydrae observed during 1982–84. The period analysis has been done using synchronous summation and discrete Fourier transform methods. We report new periodicities at 34.7 min and 26.7 min apart from confirming the detection of 46.3 min modulation recently reported. We also include our data to derive the rate of decrease of the 67 min period.

Type
II. Radio, IR and Optical Observations
Copyright
Copyright © Reidel 1987

References

Cordova, F.A. et al., MNRAS, 1985, 212, 447.CrossRefGoogle Scholar
Deeming, T.J., Astrophys Spaca Science., 1975, 36, 137.CrossRefGoogle Scholar
Gilliland, R.L., Ap. J., 1982, 258, 576.Google Scholar
Kruszewski, A. et al., Sp.Sci.Rev., 1981, 30, 221.CrossRefGoogle Scholar
Mumford, G.S., PASP, 1964, 26, 57.Google Scholar
Sterken, C.. et al., Astron and astrophys., 1983, 118, 325.Google Scholar
Vogt, N. et al., Astron and astrophys., 1980, 85, 106.Google Scholar
Warner, B. and Robinson, E.L., MNRAS, 1972, 159 101.CrossRefGoogle Scholar
Warner, B. and McGraw, J.T. MNRAS, 1981, 196, 59.CrossRefGoogle Scholar
Warner, B., ‘Cataclysmic Variables and Related Objects’, edieted by Mario, Livio and Shaviv, Giora, P155, D. Reidel Publ. Co. 1982.Google Scholar