Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011mnras.410.2643b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 410, Issue 4, pp. 2643-2652.
Astronomy and Astrophysics
Astronomy
1
Atomic Data, Atomic Processes, Line: Formation, Stars: Abundances, Stars: Individual: Η Carinae, Ism: Atoms
Scientific paper
We study the chemical abundances of the strontium filament found in the ejecta of η Carinae. In particular, we derive the abundances of iron-peak elements from the spectra of their singly ionized ions present in the optical/infrared (IR) spectra. In this paper we analyse the spectrum of Mn II using a new non-local thermodynamic equilibrium (non-LTE) model for this system. In constructing this models we carried out theoretical calculations of radiative transition rates and electron impact excitation rate coefficients. We find that relative to Ni the gas-phase abundance ratio of Mn is roughly solar, similar to the Cr abundance but in contrast to the large enhancements in the abundances of Sc and Ti. We interpret this result as an indication of non-equilibrium condensation in the ejecta of η Carinae.
Bautista Manuel A.
Gull Ted R.
Hartman Henrik
Lodders Katharina
Mélendez Marcio
No associations
LandOfFree
The abundance of iron-peak elements and the dust composition in η Carinae: manganese 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 abundance of iron-peak elements and the dust composition in η Carinae: manganese, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The abundance of iron-peak elements and the dust composition in η Carinae: manganese will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1123443