The optical spectrum of R Coronae Borealis close to 2003 decline

Tonu Kipper; Valentina Klochkova

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arXiv · 0706.3085

The optical spectrum of R Coronae Borealis close to 2003 decline

Tonu Kipper·Valentina Klochkova

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Abstract

Two sets of high-resolution spectra of R CrB obtained during the 2003 light decline are described. The first set was obtained on the descending branch of the light curve when V ~12.0 and the second one in the recovery phase with V ~7.5. The usual sharp and broad emissions are described and the lines radial velocities measured. C_2 Swan system (0,0) band was found to be in emission for the first set. The other C_2 bands were in absorption. Few CN red system (5,1) band rotational lines and low excitation FeI lines were in absorption. A table with measured radial velocities of various spectral features is presented.

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Tonu Kipper, Valentina Klochkova. 2007-06-21. The optical spectrum of R Coronae Borealis close to 2003 decline. https://arxiv.org/abs/0706.3085

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