Thorium-rich halo star HD221170: further evidence against the universality of the r-process
We report the abundance determination in the atmosphere of the bright halo star HD221170. The spectra were taken with the Terskol Observatory's 2.0-m telescope with a resolution R=45000 and signal-to-noise ratio up to 250 in the wavelength region 3638-10275 \AA. The adopted atmospheric paramete...
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| creator | Yushchenko, Alexander Gopka, Vera Goriely, Stephane Musaev, Faig Shavrina, Angelina Kim, Chulhee Kang, Young Woon Kuznietsova, Juliana Yushchenko, Vladimir |
| description | We report the abundance determination in the atmosphere of the bright halo
star HD221170. The spectra were taken with the Terskol Observatory's 2.0-m
telescope with a resolution R=45000 and signal-to-noise ratio up to 250 in the
wavelength region 3638-10275 \AA. The adopted atmospheric parameters correspond
to an effective temperature \Tef=4475 K, a surface gravity \lgg=1.0, a
microturbulent velocity \vmi=1.7 \kms, and a macroturbulent velocity \vma=4
\kms. The abundances of 43 chemical elements were determined with the method of
spectrum synthesis. The large overabundances (by 1 dex relative to iron) of
elements with Z$>38$ are shown to follow the same pattern as the solar
r-abundances. The present HD221170 analysis confirms the non-universality of
the r-process, or more exactly the observation that the astrophysical sites
hosting the r-process do not always lead to a unique relative abundance
distribution for the bulk Ba to Hg elements, the Pb-peak elements, and the
actinides. |
| doi_str_mv | 10.48550/arxiv.astro-ph/0409547 |
| format | Article |
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star HD221170. The spectra were taken with the Terskol Observatory's 2.0-m
telescope with a resolution R=45000 and signal-to-noise ratio up to 250 in the
wavelength region 3638-10275 \AA. The adopted atmospheric parameters correspond
to an effective temperature \Tef=4475 K, a surface gravity \lgg=1.0, a
microturbulent velocity \vmi=1.7 \kms, and a macroturbulent velocity \vma=4
\kms. The abundances of 43 chemical elements were determined with the method of
spectrum synthesis. The large overabundances (by 1 dex relative to iron) of
elements with Z$>38$ are shown to follow the same pattern as the solar
r-abundances. The present HD221170 analysis confirms the non-universality of
the r-process, or more exactly the observation that the astrophysical sites
hosting the r-process do not always lead to a unique relative abundance
distribution for the bulk Ba to Hg elements, the Pb-peak elements, and the
actinides.</description><identifier>DOI: 10.48550/arxiv.astro-ph/0409547</identifier><language>eng</language><subject>Physics - Astrophysics of Galaxies ; Physics - Cosmology and Nongalactic Astrophysics ; Physics - Earth and Planetary Astrophysics ; Physics - High Energy Astrophysical Phenomena ; Physics - Instrumentation and Methods for Astrophysics ; Physics - Solar and Stellar Astrophysics</subject><creationdate>2004-09</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,776,881</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/astro-ph/0409547$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.astro-ph/0409547$$DView paper in arXiv$$Hfree_for_read</backlink><backlink>$$Uhttps://doi.org/10.1051/0004-6361:20041540$$DView published paper (Access to full text may be restricted)$$Hfree_for_read</backlink></links><search><creatorcontrib>Yushchenko, Alexander</creatorcontrib><creatorcontrib>Gopka, Vera</creatorcontrib><creatorcontrib>Goriely, Stephane</creatorcontrib><creatorcontrib>Musaev, Faig</creatorcontrib><creatorcontrib>Shavrina, Angelina</creatorcontrib><creatorcontrib>Kim, Chulhee</creatorcontrib><creatorcontrib>Kang, Young Woon</creatorcontrib><creatorcontrib>Kuznietsova, Juliana</creatorcontrib><creatorcontrib>Yushchenko, Vladimir</creatorcontrib><title>Thorium-rich halo star HD221170: further evidence against the universality of the r-process</title><description>We report the abundance determination in the atmosphere of the bright halo
star HD221170. The spectra were taken with the Terskol Observatory's 2.0-m
telescope with a resolution R=45000 and signal-to-noise ratio up to 250 in the
wavelength region 3638-10275 \AA. The adopted atmospheric parameters correspond
to an effective temperature \Tef=4475 K, a surface gravity \lgg=1.0, a
microturbulent velocity \vmi=1.7 \kms, and a macroturbulent velocity \vma=4
\kms. The abundances of 43 chemical elements were determined with the method of
spectrum synthesis. The large overabundances (by 1 dex relative to iron) of
elements with Z$>38$ are shown to follow the same pattern as the solar
r-abundances. The present HD221170 analysis confirms the non-universality of
the r-process, or more exactly the observation that the astrophysical sites
hosting the r-process do not always lead to a unique relative abundance
distribution for the bulk Ba to Hg elements, the Pb-peak elements, and the
actinides.</description><subject>Physics - Astrophysics of Galaxies</subject><subject>Physics - Cosmology and Nongalactic Astrophysics</subject><subject>Physics - Earth and Planetary Astrophysics</subject><subject>Physics - High Energy Astrophysical Phenomena</subject><subject>Physics - Instrumentation and Methods for Astrophysics</subject><subject>Physics - Solar and Stellar Astrophysics</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNqNzr0OgjAUhuEuDka9Bs_iWCgIQV39CRfA5tCcYLFNgDanhcjdawgX4PQlb77hYWyfiCg75bmIkT5mjNAHstzpWGTinGfFmj0rbckMHSdTa9DYWvABCcpbmiZJIS7QDBS0IlCjeam-VoBvNL0P8Ksw9GZU5LE1YQLbzI24I1sr77ds1WDr1W7ZDTs87tW15DNGOjId0iRnlHRaLqjjv78vH1ZIgQ</recordid><startdate>20040922</startdate><enddate>20040922</enddate><creator>Yushchenko, Alexander</creator><creator>Gopka, Vera</creator><creator>Goriely, Stephane</creator><creator>Musaev, Faig</creator><creator>Shavrina, Angelina</creator><creator>Kim, Chulhee</creator><creator>Kang, Young Woon</creator><creator>Kuznietsova, Juliana</creator><creator>Yushchenko, Vladimir</creator><scope>GOX</scope></search><sort><creationdate>20040922</creationdate><title>Thorium-rich halo star HD221170: further evidence against the universality of the r-process</title><author>Yushchenko, Alexander ; Gopka, Vera ; Goriely, Stephane ; Musaev, Faig ; Shavrina, Angelina ; Kim, Chulhee ; Kang, Young Woon ; Kuznietsova, Juliana ; Yushchenko, Vladimir</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-arxiv_primary_astro_ph_04095473</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Physics - Astrophysics of Galaxies</topic><topic>Physics - Cosmology and Nongalactic Astrophysics</topic><topic>Physics - Earth and Planetary Astrophysics</topic><topic>Physics - High Energy Astrophysical Phenomena</topic><topic>Physics - Instrumentation and Methods for Astrophysics</topic><topic>Physics - Solar and Stellar Astrophysics</topic><toplevel>online_resources</toplevel><creatorcontrib>Yushchenko, Alexander</creatorcontrib><creatorcontrib>Gopka, Vera</creatorcontrib><creatorcontrib>Goriely, Stephane</creatorcontrib><creatorcontrib>Musaev, Faig</creatorcontrib><creatorcontrib>Shavrina, Angelina</creatorcontrib><creatorcontrib>Kim, Chulhee</creatorcontrib><creatorcontrib>Kang, Young Woon</creatorcontrib><creatorcontrib>Kuznietsova, Juliana</creatorcontrib><creatorcontrib>Yushchenko, Vladimir</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Yushchenko, Alexander</au><au>Gopka, Vera</au><au>Goriely, Stephane</au><au>Musaev, Faig</au><au>Shavrina, Angelina</au><au>Kim, Chulhee</au><au>Kang, Young Woon</au><au>Kuznietsova, Juliana</au><au>Yushchenko, Vladimir</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thorium-rich halo star HD221170: further evidence against the universality of the r-process</atitle><date>2004-09-22</date><risdate>2004</risdate><abstract>We report the abundance determination in the atmosphere of the bright halo
star HD221170. The spectra were taken with the Terskol Observatory's 2.0-m
telescope with a resolution R=45000 and signal-to-noise ratio up to 250 in the
wavelength region 3638-10275 \AA. The adopted atmospheric parameters correspond
to an effective temperature \Tef=4475 K, a surface gravity \lgg=1.0, a
microturbulent velocity \vmi=1.7 \kms, and a macroturbulent velocity \vma=4
\kms. The abundances of 43 chemical elements were determined with the method of
spectrum synthesis. The large overabundances (by 1 dex relative to iron) of
elements with Z$>38$ are shown to follow the same pattern as the solar
r-abundances. The present HD221170 analysis confirms the non-universality of
the r-process, or more exactly the observation that the astrophysical sites
hosting the r-process do not always lead to a unique relative abundance
distribution for the bulk Ba to Hg elements, the Pb-peak elements, and the
actinides.</abstract><doi>10.48550/arxiv.astro-ph/0409547</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Physics - Astrophysics of Galaxies Physics - Cosmology and Nongalactic Astrophysics Physics - Earth and Planetary Astrophysics Physics - High Energy Astrophysical Phenomena Physics - Instrumentation and Methods for Astrophysics Physics - Solar and Stellar Astrophysics |
| title | Thorium-rich halo star HD221170: further evidence against the universality of the r-process |
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