The Spectrum of R Coronae Australis

Details The Spectrum of R Coronae Australis The Spectrum of R Coronae Australis

Oct 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969bott....5..107m&link_type=abstract

Boletín de los Observatorios de Tonantzintla y Tacubaya Vol. 5, pp. 107-109 (1969) (http://www.astroscu.unam.mx/bott/)

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8

Galaxy: Open Clusters And Associations: Individual (Ngc 6729), Stars: Variables: Individual (R Cra)

Scientific paper

The spectrum of R CrA cannot be classified uniquely in the MK system. However, the K-line of Ca II and some hydrogen lines indicate a spectral type earlier than A7, perhaps A5. Shell characteristics, with extremely strong Ti II (specially λλ3759-61) are observed. Emissions are present at H-alpha and other Balmer lines. The Fe II-lines show weak emissions. Altogether the spectrum of R CrA can be described, approximately, as an A5pe. A radial velocity of -28 km/sec, is derived from all well-identified absorption lines. This value agrees well with that given in Wilson's General Catalogue of Stellar Radial Velocities.

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