Spectral analysis of DY Centauri, a hot R Coronae Borealis star with unusually high hydrogen content

Details Spectral analysis of DY Centauri, a hot R Coronae Borealis star with unusually high hydrogen content Spectral analysis of DY Centauri, a hot R Coronae Borealis star with unusually high hydrogen content

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...270..167j&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 270, no. 1-2, p. 167-176.

Astronomy and Astrophysics

Astrophysics

42

Hydrogen, R Coronae Borealis Stars, Stellar Composition, Stellar Spectra, Emission Spectra, Spectrum Analysis, Supergiant Stars

Scientific paper

The photospheric parameters of DY Cen, an H-deficient early-B supergiant that is spectroscopically similar to the pulsating, extreme-He star BD-9 deg 4395, have been derived from high-resolution spectra via atomic data and line-blanketed model atmospheres. DY Cen is shown to be a metal-poor EHe star whose composition supports an anticorrelation between H and Fe abundances in EHe stars. Its previous evolution is reflected in its N-enriched atmospheric chemistry.

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