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Periodic Modulations in the Optical Light Curves of EX Hydrae

Published online by Cambridge University Press:  12 April 2016

S. Seetha ,
D.P. Sharma ,
V.N. Padmini ,
T.M.K. Marar ,
K. Kasturirangan ,
U.R. Rao  and
J.C. Bhattacharyya
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

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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
Information
International Astronomical Union Colloquium , Volume 93: Cataclysmic Variables: Recent Multi-Frequency Observations and Theoretical Developments , 1987 , pp. 193 - 196
Copyright
Copyright © Reidel 1987

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