The unusual ultraviolet chromospheric spectrum of the R Coronae Borealis star, V854 Centauri (NSV 6708), at minimum light

Details The unusual ultraviolet chromospheric spectrum of the R Coronae Borealis star, V854 Centauri (NSV 6708), at minimum light The unusual ultraviolet chromospheric spectrum of the R Coronae Borealis star, V854 Centauri (NSV 6708), at minimum light

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...384l..19c&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 384, Jan. 1, 1992, p. L19-L23.

Astronomy and Astrophysics

Astronomy

16

Chromosphere, R Coronae Borealis Stars, Stellar Coronas, Stellar Spectra, Ultraviolet Spectra, Iue, Line Spectra, Spectrum Analysis, Ultraviolet Astronomy

Scientific paper

Results are presented of IUE observations of a decline of the recently discovered R CrB star, V854 Cen. These observations are of particular interest because they include spectra taken at 7 mag below maximum light. The 'chromospheric' emission spectra show striking differences from UV spectra of other R CrB stars in decline. Strong emission appears in several lines not normally seen in R CrB emission-line spectra, in particular at semiforbidden C II 2326, Mg I 2852, and C I 2965, 2967. Spectral evolution similar to that seen in visible spectra of R CrB stars is clearly seen in the UV. It is argued that the differences between V854 Cen and other R CrB stars are related to known abundance differences or to different temperature and density conditions in the emission-line regions of the various R CrB stars. The emission may also be significantly affected by the presence of dust in or near the emitting region.

Affiliated with

Also associated with

No associations

Rating

The unusual ultraviolet chromospheric spectrum of the R Coronae Borealis star, V854 Centauri (NSV 6708), at minimum light does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The unusual ultraviolet chromospheric spectrum of the R Coronae Borealis star, V854 Centauri (NSV 6708), at minimum light, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The unusual ultraviolet chromospheric spectrum of the R Coronae Borealis star, V854 Centauri (NSV 6708), at minimum light will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-935213