Browsing by Subject "Ubv Spectra"

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Epsilon Aurigae in eclipse - The light and colour variations

Parthasarathy, M; Frueh, M. L (D. Reidel Publishing Co., 1986-06)

Theuvby andVRI observations of Aur during the ingress and early totality phases obtained at the McDonald Observatory are analysed. The light and colour variations of Aur during the 1982–1984 eclipse are compared with ...
HD 147010:The AP star in the reflection nebula vdB 102 in upper scorpius region

Kameswara Rao, N; Rajamohan, R (Indian Academy of Sciences, 1982-09)

HD 147010, which is in the reflection nebula vdB 102, has been found to be a hot Ap silicon star rather than a normal A supergiant. From the UBV and JHK photometry of the star, color excess E(B-V) of 0.29 and the ratio of ...
Spot activity in the RS CVn binary HR 1099

Mekkaden, M. V; Raveendran, A. V; Mohin, S (Indian Academy of Sciences, 1982-03)

UBV photometry of HR 1099 obtained during the 1979-80 and 1980-81 observing seasons is presented. An analysis of the available data shows that the brightness at the light curve maximum increases as the wave amplitude ...
UBV Observations of R-Coronae Type Variables and Related Objects

Kameswara Rao, N (D. Reidel Publishing Co., 1980-07)

UBV observations obtained during the period 1972-73 are presented for the following five R CrB stars: GU Sgr, SU Tau, XX CAm, DZ And, V973 Oph, and the hydrogen-poor, carbon-rich stars BD + 10 deg 2179 and HD 137613. ...

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