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Title:
New Photometry of the Hyades delta Scuti Star V777 Tau (71 Tau)
Authors:
Krisciunas, Kevin; Simon, Theodore; Crowe, Richard A.; Roberts, Mavourneen
Publication:
Information Bulletin on Variable Stars, 4264, 1. (IBVS Homepage)
Publication Date:
11/1995
Origin:
IBVS
Objects:
V777 Tau
Comment:
4264-t1
Bibliographic Code:
1995IBVS.4264....1K

Abstract

71 Tau was discovered to be a $\delta$ Scuti star by Horan (1979, AJ 84, 1770). To our knowledge no other photometry of this star has been published. 71 Tau is the second brightest X-ray source in the Hyades and has been shown to be variable by as much as 30 \% at ultraviolet wavelengths near 1700 to 2000 \AA. We find that the best two-frequency fit to the new photometry is obtained with $f_{1}$ = 5.485 and $f_{2}$ = 7.637 d$^{-1}$, with amplitudes $A_{1}$ = 6.0 and $A_{2}$ = 3.4 mmag, respectively. However, one-day aliases of these frequencies {\em could} be the true values. (For $\delta$ Scuti stars pulsating radially the ratio of first overtone period to fundamental period is 0.773.) It would be useful to obtain more extensive data runs on this and other $\delta$ Scuti stars in the Hyades.

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