Fe I oscillator strengths for transitions from high-lying even-parity levels
File(s)1409.8142v1.pdf (642.38 KB)
Accepted version
Author(s)
Type
Journal Article
Abstract
New radiative lifetimes, measured to ±5% accuracy, are reported for 31 even-parity levels of Fe I ranging from 45061 cm–1 to 56842 cm–1. These lifetimes have been measured using single-step and two-step time-resolved laser-induced fluorescence on a slow atomic beam of iron atoms. Branching fractions have been attempted for all of these levels, and completed for 20 levels. This set of levels represents an extension of the collaborative work reported in Ruffoni et al. The radiative lifetimes combined with the branching fractions yields new oscillator strengths for 203 lines of Fe I. Utilizing a 1D-LTE model of the solar photosphere, spectral syntheses for a subset of these lines which are unblended in the solar spectrum yields a mean iron abundance of langlog[ε(Fe)]rang = 7.45 ± 0.06.
Date Issued
2014-12-02
Date Acceptance
2014-09-24
Citation
Astrophysical Journal Supplement Series, 2014, 215 (2), pp.1-13
ISSN
0067-0049
Publisher
American Astronomical Society
Start Page
1
End Page
13
Journal / Book Title
Astrophysical Journal Supplement Series
Volume
215
Issue
2
Copyright Statement
©2014. The American Astronomical Society. All rights reserved.
Sponsor
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council [2006-2012]
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000347542500008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
ST/K001051/1
ST/I001034/1
ST/K001051/1
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
atomic data
stars: abundances
Sun: abundances
LATE-TYPE STARS
PRECISION-MEASUREMENT
CRITICAL COMPILATION
MODEL ATMOSPHERES
PROBABILITIES
LINES
LIFETIMES
ACCURACY
ENERGIES
0.5-PERCENT
Publication Status
Published
Article Number
ARTN 23
Date Publish Online
2014-12-22