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Stellar population ...
Stellar population astrophysics (SPA) with the TNG. Identification of a sulphur line at λ_air = 1063.6 nm in GIANO-B stellar spectra
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- Ryde, N. (författare)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Hartman, Henrik (författare)
- Malmö University,Lund University,Lunds universitet,Malmö universitet,Institutionen för materialvetenskap och tillämpad matematik (MTM),Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, Box 43 221 00 Lund, Sweden,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Oliva, E. (författare)
- INAF-Arcetri Astrophysical Observatory, Largo E. Fermi 5, Firenze, 50125, Italy,INAF - Osservatorio Astrofisico di Arcetri
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- Origlia, L. (författare)
- INAF, Osservatorio di Astrofisica e Scienza Dello Spazio di Bologna, Via Gobetti 93/3, Bologna, 40129, Italy,INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Bologna
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- Sanna, N. (författare)
- INAF-Arcetri Astrophysical Observatory, Largo E. Fermi 5, Firenze, 50125, Italy,INAF - Osservatorio Astrofisico di Arcetri
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- Rainer, M. (författare)
- INAF-Arcetri Astrophysical Observatory, Largo E. Fermi 5, Firenze, 50125, Italy,INAF - Osservatorio Astrofisico di Arcetri
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- Thorsbro, B. (författare)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Dalessandro, E. (författare)
- INAF, Osservatorio di Astrofisica e Scienza Dello Spazio di Bologna, Via Gobetti 93/3, Bologna, 40129, Italy,INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Bologna
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- Bono, G. (författare)
- Dipartimento di Fisica e Astronomia, Universitá degli Studi di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Roma, Italy; INAF – Osservatorio Astronomico di Roma, Via Frascati 33, 00040 Monte Porzio Catone, Italy
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(creator_code:org_t)
- 2019-10-23
- 2019
- Engelska.
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 631, s. L3-L5
- Relaterad länk:
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https://doi.org/10.1...
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https://arxiv.org/ab...
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https://www.aanda.or...
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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Abstract
Ämnesord
Stäng
- Context. In the advent of new infrared, high-resolution spectrometers, accurate and precise atomic data in the infrared is urgently needed. Identifications, wavelengths, strengths, broadening and hyper-fine splitting parameters of stellar lines in the near-IR are in many cases not accurate enough to model observed spectra, and in other cases even non existing. Some stellar features are unidentified. Aims. The aim with this work is to identify a spectral feature at lambda(vac) = 1063.891 nm or lambda(air) = 1063.600 nm seen in spectra of stars of different spectral types, observed with the GIANO-B spectrometer. Methods. Searching for spectral lines to match the unidentified feature in linelists from standard atomic databases was not successful. However, by investigating the original, published laboratory data we were able to identify the feature and solve the problem. To confirm its identification, we model the presumed stellar line in the solar intensity spectrum and find an excellent match. Results. We find that the observed spectral feature is a stellar line originating from the 4s'-4p' transition in S I, and that the reason for its absence in atomic line databases is a neglected air-to-vacuum correction in the original laboratory measurements from 1967 for this line only. From interpolation we determine the laboratory wavelength of the S I line to be lambda(vac) = 1063.8908 nm or lambda(air) = 1063.5993 nm, and the excitation energy of the upper level to be 9.74978 eV.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- atomic data
- infrared
- stars
- line
- identification
- instrumentation
- spectrographs
- methods
- laboratory atomic
- techniques
- spectroscopic
- solar astrophysics
- stellar astrophysics
- astrophysics
- Atomic data
- Infrared: Stars
- Instrumentation: Spectrographs
- Line: Identification
- Methods: Laboratory: Atomic
- Techniques: Spectroscopic
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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