Lanthanides and other spectral oddities in a Centauri. Ce III, Nd III, Kr II, and broad absorption features

Details Lanthanides and other spectral oddities in a Centauri. Ce III, Nd III, Kr II, and broad absorption features Lanthanides and other spectral oddities in a Centauri. Ce III, Nd III, Kr II, and broad absorption features

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010a%26a...523a..82c&link_type=abstract

Astronomy and Astrophysics, Volume 523, id.A82

Astronomy and Astrophysics

Astrophysics

Stars: Chemically Peculiar, Stars: Variable: General, Stars: Individual: A Cen

Scientific paper

Context. There is considerable interest in the helium variable a Cen as a bridge between helium-weak and helium-strong CP stars. Aims: We investigate Ce iii and other possible lanthanides in the spectrum the of hottest chemically peculiar (CP) star in which these elements have been found. A Kr ii line appears within a broad absorption which we suggest may be due to a high-level transition in C ii. Methods: Wavelengths and equivalent widths are measured on high-resolution UVES spectra, analyzed, and their phase-variations investigated. Results: New, robust identifications of Ce iii and Kr ii are demonstrated. Nd iii is likely present. A broad absorption near λ4619 is present at all phases of a Cen, and in some other early B stars. Conclusions: The presence of lanthanides in a Cen strengthens the view that this star is a significant link between the cooler CP stars and the hotter helium-peculiar stars. Broad absorptions in a Cen are not well explained.
Based on observations collected at the European Southern Observatory, Paranal, Chile (ESO programmes 65.L-0316(A), 073.D-0504(A), and 076.B-0055(A)).

Affiliated with

Also associated with

No associations

Rating

Lanthanides and other spectral oddities in a Centauri. Ce III, Nd III, Kr II, and broad absorption features 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 Lanthanides and other spectral oddities in a Centauri. Ce III, Nd III, Kr II, and broad absorption features, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lanthanides and other spectral oddities in a Centauri. Ce III, Nd III, Kr II, and broad absorption features will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1157493