A study of the elements copper through uranium in Sirius A: Contributions from STIS and ground-based spectra
We determine abundances or upper limits for all of the 55 stable elements from copper to uranium for the A1 Vm star Sirius. The purpose of the study is to assemble the most complete picture of elemental abundances with the hope of revealing the chemical history of the brightest star in the sky, apar...
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ftdatacite:10.48550/arxiv.1605.08399 2023-05-15T18:50:48+02:00 A study of the elements copper through uranium in Sirius A: Contributions from STIS and ground-based spectra Cowley, Charles R. Ayres, Thomas R. Castelli, Fiorella Gulliver, Austin F. Monier, Richard Wahlgren, Glenn 2016 https://dx.doi.org/10.48550/arxiv.1605.08399 https://arxiv.org/abs/1605.08399 unknown arXiv https://dx.doi.org/10.3847/0004-637x/826/2/158 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Solar and Stellar Astrophysics astro-ph.SR FOS Physical sciences article-journal Article ScholarlyArticle Text 2016 ftdatacite https://doi.org/10.48550/arxiv.1605.08399 https://doi.org/10.3847/0004-637x/826/2/158 2022-04-01T11:42:30Z We determine abundances or upper limits for all of the 55 stable elements from copper to uranium for the A1 Vm star Sirius. The purpose of the study is to assemble the most complete picture of elemental abundances with the hope of revealing the chemical history of the brightest star in the sky, apart from the Sun. We also explore the relationship of this hot metallic-line (Am) star to its cooler congeners, as well as the hotter, weakly- or non-magnetic mercury-manganese (HgMn) stars. Our primary observational material consists of {\em Hubble Space Telescope} ($HST$) spectra taken with the Space Telescope Imaging Spectrograph (STIS) in the ASTRAL project. We have also used archival material from the %\citep/{ayr10}. $COPERNICUS$ satellite, and from the $HST$ Goddard High-Resolution Spectrograph (GHRS), as well as ground-based spectra from Furenlid, Westin, Kurucz, Wahlgren, and their coworkers, ESO spectra from the UVESPOP project, and NARVAL spectra retrieved from PolarBase. Our analysis has been primarily by spectral synthesis, and in this work we have had the great advantage of extensive atomic data unavailable to earlier workers. We find most abundances as well as upper limits range from 10 to 100 times above solar values. We see no indication of the huge abundance excesses of 1000 or more that occur among many chemically peculiar (CP) stars of the upper main sequence. The picture of Sirius as a hot Am star is reinforced. : With 6 Figures and 4 Tables; accepted for publication in ApJ Text narval narval DataCite Metadata Store (German National Library of Science and Technology) Hubble ENVELOPE(158.317,158.317,-80.867,-80.867) Sirius ENVELOPE(163.250,163.250,-84.133,-84.133) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Solar and Stellar Astrophysics astro-ph.SR FOS Physical sciences |
spellingShingle |
Solar and Stellar Astrophysics astro-ph.SR FOS Physical sciences Cowley, Charles R. Ayres, Thomas R. Castelli, Fiorella Gulliver, Austin F. Monier, Richard Wahlgren, Glenn A study of the elements copper through uranium in Sirius A: Contributions from STIS and ground-based spectra |
topic_facet |
Solar and Stellar Astrophysics astro-ph.SR FOS Physical sciences |
description |
We determine abundances or upper limits for all of the 55 stable elements from copper to uranium for the A1 Vm star Sirius. The purpose of the study is to assemble the most complete picture of elemental abundances with the hope of revealing the chemical history of the brightest star in the sky, apart from the Sun. We also explore the relationship of this hot metallic-line (Am) star to its cooler congeners, as well as the hotter, weakly- or non-magnetic mercury-manganese (HgMn) stars. Our primary observational material consists of {\em Hubble Space Telescope} ($HST$) spectra taken with the Space Telescope Imaging Spectrograph (STIS) in the ASTRAL project. We have also used archival material from the %\citep/{ayr10}. $COPERNICUS$ satellite, and from the $HST$ Goddard High-Resolution Spectrograph (GHRS), as well as ground-based spectra from Furenlid, Westin, Kurucz, Wahlgren, and their coworkers, ESO spectra from the UVESPOP project, and NARVAL spectra retrieved from PolarBase. Our analysis has been primarily by spectral synthesis, and in this work we have had the great advantage of extensive atomic data unavailable to earlier workers. We find most abundances as well as upper limits range from 10 to 100 times above solar values. We see no indication of the huge abundance excesses of 1000 or more that occur among many chemically peculiar (CP) stars of the upper main sequence. The picture of Sirius as a hot Am star is reinforced. : With 6 Figures and 4 Tables; accepted for publication in ApJ |
format |
Text |
author |
Cowley, Charles R. Ayres, Thomas R. Castelli, Fiorella Gulliver, Austin F. Monier, Richard Wahlgren, Glenn |
author_facet |
Cowley, Charles R. Ayres, Thomas R. Castelli, Fiorella Gulliver, Austin F. Monier, Richard Wahlgren, Glenn |
author_sort |
Cowley, Charles R. |
title |
A study of the elements copper through uranium in Sirius A: Contributions from STIS and ground-based spectra |
title_short |
A study of the elements copper through uranium in Sirius A: Contributions from STIS and ground-based spectra |
title_full |
A study of the elements copper through uranium in Sirius A: Contributions from STIS and ground-based spectra |
title_fullStr |
A study of the elements copper through uranium in Sirius A: Contributions from STIS and ground-based spectra |
title_full_unstemmed |
A study of the elements copper through uranium in Sirius A: Contributions from STIS and ground-based spectra |
title_sort |
study of the elements copper through uranium in sirius a: contributions from stis and ground-based spectra |
publisher |
arXiv |
publishDate |
2016 |
url |
https://dx.doi.org/10.48550/arxiv.1605.08399 https://arxiv.org/abs/1605.08399 |
long_lat |
ENVELOPE(158.317,158.317,-80.867,-80.867) ENVELOPE(163.250,163.250,-84.133,-84.133) |
geographic |
Hubble Sirius |
geographic_facet |
Hubble Sirius |
genre |
narval narval |
genre_facet |
narval narval |
op_relation |
https://dx.doi.org/10.3847/0004-637x/826/2/158 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1605.08399 https://doi.org/10.3847/0004-637x/826/2/158 |
_version_ |
1766244559168208896 |