Improved Ni I Log(gf) Values and Abundance Determinations in the Photospheres of the Sun and Metal-Poor Star HD 84937

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dc.contributor.utaustinauthorSneden, Christopheren_US
dc.creatorWood, M. P.en_US
dc.creatorLawler, James E.en_US
dc.creatorSneden, Christopheren_US
dc.creatorCowan, John J.en_US
dc.date.accessioned2016-10-28T19:34:10Z
dc.date.available2016-10-28T19:34:10Z
dc.date.issued2014-04en_US
dc.description.abstractAtomic transition probability measurements for 371 Ni I lines in the UV through near-IR are reported. Branching fractions from data recorded using a Fourier transform spectrometer and a new echelle spectrograph are combined with published radiative lifetimes to determine these transition probabilities. Generally good agreement is found in comparisons to previously reported Ni I transition probability measurements. Use of the new echelle spectrograph, independent radiometric calibration methods, and independent data analysis routines enable a reduction of systematic errors and overall improvement in transition probability uncertainty over previous measurements. The new Ni I data are applied to high-resolution visible and UV spectra of the Sun and metal-poor star HD 84937 to derive new, more accurate Ni abundances. Lines covering a wide range of wavelength and excitation potential are used to search for non-LTE effects.en_US
dc.description.departmentAstronomyen_US
dc.description.sponsorshipNASA NNX10AN93Gen_US
dc.description.sponsorshipNSF AST-0908978, AST-1211585en_US
dc.description.sponsorshipUniversity of Texasen_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) 112T929en_US
dc.identifierdoi:10.15781/T24F1MM6K
dc.identifier.citationWood, M. P., J. E. Lawler, C. Sneden, and J. J. Cowan. "Improved Ni I log (gf) Values and Abundance Determinations in the Photospheres of the Sun and Metal-poor Star HD 84937." The Astrophysical Journal Supplement Series, Vol. 211, No. 2 (Apr., 2014): 20.en_US
dc.identifier.doi10.1088/0067-0049/211/2/20en_US
dc.identifier.issn0067-0049en_US
dc.identifier.urihttp://hdl.handle.net/2152/42912
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialAstrophysical Journal Supplement Seriesen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectatomic dataen_US
dc.subjectmethods: laboratory: atomicen_US
dc.subjectstars: abundancesen_US
dc.subjectstars:en_US
dc.subjectindividual (hd 84937)en_US
dc.subjectsun: abundancesen_US
dc.subjectlaboratory transition-probabilitiesen_US
dc.subjectr-process-richen_US
dc.subjectargon branchingen_US
dc.subjectratiosen_US
dc.subjectspectral-intensity calibrationen_US
dc.subjectgalactic chemical evolutionen_US
dc.subjectspectroscopic analysisen_US
dc.subjectmilky-wayen_US
dc.subjectoscillator-strengthsen_US
dc.subjectisotope shiften_US
dc.subjectspectrometeren_US
dc.subjectastronomy & astrophysicsen_US
dc.titleImproved Ni I Log(gf) Values and Abundance Determinations in the Photospheres of the Sun and Metal-Poor Star HD 84937en_US
dc.typeArticleen_US

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