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Preliminary Analysis of the Broad He I Emission Lines in R CrB

Published online by Cambridge University Press:  12 April 2016

R. Surendiranath ,
K.E. Rangarajan  and
N. Kameswara Rao
R. Surendiranath
Affiliation:
Indian Institute of AstrophysicsBangalore 560034INDIA
K.E. Rangarajan
Affiliation:
Indian Institute of AstrophysicsBangalore 560034INDIA
N. Kameswara Rao
Affiliation:
Indian Institute of AstrophysicsBangalore 560034INDIA

Abstract:

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During light minimum phase, R CrB shows a broad emission line spectrum of He I including λ10830, λ7065, λ7281, λ3889, λ6678 and λ3188. But λ5876 is very weak. The observed intensity ratios of I(λ3889)/I(λ5876) and I(λ7065)/I(λ5876) were greater than 1. The anomalous intensities of these lines appear to be due to optical depth efects. Peliminary analysis is presented to derive the physical conditions of the emitting gas.

Type
IV Cool Hydrogen Deficient Stars
Information
International Astronomical Union Colloquium , Volume 87: Hydrogen Deficient Stars and Related Objects , 1985 , pp. 199 - 202
Copyright
Copyright © Reidel 1986

References

Auer, L.H., Heasley, J.N., and Milkey, R.W., 1972, KPNO contribution No.555.Google Scholar
Dahari, O., and Osterbrock, D.E., 1984, Astrophys. J., 277, 648.Google Scholar
Feldman, F.R., and MacAlpine, G.M., 1978, Astrophys. J. 221, 486 Google Scholar
Gaposchkin, C.P., 1963, Astrophys. J., 138, 320.Google Scholar
Rao, N.K., 1981, in “Effects of mass loss on stellar evolution”, IAU Coll.59, chiosi, C., and Stallo, R., (eds), Reidel, D., p.469.Google Scholar