Analysis of the UBV light curves of TT hydrae by Kopal's frequency domain method

Koul, Jawahar ; Abhyankar, K. D. (1982) Analysis of the UBV light curves of TT hydrae by Kopal's frequency domain method Journal of Astrophysics and Astronomy, 3 . pp. 93-99. ISSN 0250-6335

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Abstract

The light curves of the totally eclipsing system TT Hya in UBV colours observed by Kulkarni and Abhyankar during 1973-77 have been analysed by Kopal's frequency domain method with slight modification. We find rs (primary) = 0.104 ± 0.005, rg (secondary) = 0.215 ± 0.008 and i = 89° ± 1°. The value of rg obtained in this study is smaller than that determined earlier by Kulkarni and Abhyankar by the method of Russell and Merrill; this confirms the undersized nature of the secondary component. The ultraviolet colour excess of the secondary is also confirmed.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Close Binaries; Absolute Dimensions
ID Code:24141
Deposited On:29 Nov 2010 10:21
Last Modified:17 May 2016 07:53

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