NAOC Open IR
The R-process Alliance: The Peculiar Chemical Abundance Pattern of RAVE J183013.5-455510
Placco, Vinicius M.1,2; Santucci, Rafael M.3,4; Yuan, Zhen5; Mardini, Mohammad K.6,7; Holmbeck, Erika M.1,2; Wang, Xilu1,2,8; Surman, Rebecca1,2; Hansen, Terese T.9,10; Roederer, Ian U.2,11; Beers, Timothy C.1,2; Choplin, Arthur12,13; Ji, Alexander P.14; Ezzeddine, Rana15; Frebel, Anna2,16,17; Sakari, Charli M.18; Whitten, Devin D.1,2; Zepeda, Joseph1,2
2020-07-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume897Issue:1Pages:21
AbstractWe report on the spectroscopic analysis of RAVE J183013.5-455510, an extremely metal-poor star, highly enhanced in CNO, and with discernible contributions from the rapid neutron-capture process. There is no evidence of binarity for this object. At [Fe/H] = -3.57, this star has one of the lowest metallicities currently observed, with 18 measured abundances of neutron-capture elements. The presence of Ba, La, and Ce abundances above the solar system r-process predictions suggests that there must have been a non-standard source of r-process elements operating at such low metallicities. One plausible explanation is that this enhancement originates from material ejected at unusually high velocities in a neutron star merger event. We also explore the possibility that the neutron-capture elements were produced during the evolution and explosion of a rotating massive star. In addition, based on comparisons with yields from zero-metallicity faint supernova, we speculate that RAVE J1830-4555 was formed from a gas cloud pre-enriched by both progenitor types. From analysis based on Gaia DR2 measurements, we show that this star has orbital properties similar to the Galactic metal-weak thick-disk stellar population.
KeywordChemical abundances Stellar atmospheres Stellar kinematics R-process CEMP stars Metallicity
Funding OrganizationNational Science Foundation (NSF) ; National Science Foundation (NSF) ; CNPq ; CNPq ; CAPES/PROAP-IF ; CAPES/PROAP-IF ; Department of Energy ; Department of Energy ; National Science Foundation ; National Science Foundation ; NSF ; NSF ; Swiss National Science Foundation ; Swiss National Science Foundation ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA ; NASA ; NSF CAREER grant ; NSF CAREER grant ; Robert Martin Ayers Sciences Fund ; Robert Martin Ayers Sciences Fund ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation ; National Science Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; CNPq ; CNPq ; CAPES/PROAP-IF ; CAPES/PROAP-IF ; Department of Energy ; Department of Energy ; National Science Foundation ; National Science Foundation ; NSF ; NSF ; Swiss National Science Foundation ; Swiss National Science Foundation ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA ; NASA ; NSF CAREER grant ; NSF CAREER grant ; Robert Martin Ayers Sciences Fund ; Robert Martin Ayers Sciences Fund ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation ; National Science Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; CNPq ; CNPq ; CAPES/PROAP-IF ; CAPES/PROAP-IF ; Department of Energy ; Department of Energy ; National Science Foundation ; National Science Foundation ; NSF ; NSF ; Swiss National Science Foundation ; Swiss National Science Foundation ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA ; NASA ; NSF CAREER grant ; NSF CAREER grant ; Robert Martin Ayers Sciences Fund ; Robert Martin Ayers Sciences Fund ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation ; National Science Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; CNPq ; CNPq ; CAPES/PROAP-IF ; CAPES/PROAP-IF ; Department of Energy ; Department of Energy ; National Science Foundation ; National Science Foundation ; NSF ; NSF ; Swiss National Science Foundation ; Swiss National Science Foundation ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA ; NASA ; NSF CAREER grant ; NSF CAREER grant ; Robert Martin Ayers Sciences Fund ; Robert Martin Ayers Sciences Fund ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation ; National Science Foundation
DOI10.3847/1538-4357/ab99c6
WOS KeywordMETAL-POOR STARS ; CORE-COLLAPSE SUPERNOVAE ; NEUTRON-CAPTURE ELEMENTS ; MASSIVE STARS ; S-PROCESS ; 1ST STARS ; ALL-SKY ; EVOLUTION ; NUCLEOSYNTHESIS ; GALAXY
Language英语
Funding ProjectNational Science Foundation (NSF)[PHY-1430152] ; CNPq[436696/2018-5] ; CAPES/PROAP-IF ; Department of Energy[DE-FG02-95-ER40934] ; National Science Foundation[PHY-1630782] ; NSF[AST 16-13536] ; NSF[AST1815403] ; Swiss National Science Foundation[P2GEP2_184492] ; NASA through Hubble Fellowship - Space Telescope Science Institute[HST-HF2-51393.001] ; NASA[NAS5-26555] ; NSF CAREER grant[AST-1255160] ; Robert Martin Ayers Sciences Fund ; National Aeronautics and Space Administration ; National Science Foundation
Funding OrganizationNational Science Foundation (NSF) ; National Science Foundation (NSF) ; CNPq ; CNPq ; CAPES/PROAP-IF ; CAPES/PROAP-IF ; Department of Energy ; Department of Energy ; National Science Foundation ; National Science Foundation ; NSF ; NSF ; Swiss National Science Foundation ; Swiss National Science Foundation ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA ; NASA ; NSF CAREER grant ; NSF CAREER grant ; Robert Martin Ayers Sciences Fund ; Robert Martin Ayers Sciences Fund ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation ; National Science Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; CNPq ; CNPq ; CAPES/PROAP-IF ; CAPES/PROAP-IF ; Department of Energy ; Department of Energy ; National Science Foundation ; National Science Foundation ; NSF ; NSF ; Swiss National Science Foundation ; Swiss National Science Foundation ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA ; NASA ; NSF CAREER grant ; NSF CAREER grant ; Robert Martin Ayers Sciences Fund ; Robert Martin Ayers Sciences Fund ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation ; National Science Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; CNPq ; CNPq ; CAPES/PROAP-IF ; CAPES/PROAP-IF ; Department of Energy ; Department of Energy ; National Science Foundation ; National Science Foundation ; NSF ; NSF ; Swiss National Science Foundation ; Swiss National Science Foundation ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA ; NASA ; NSF CAREER grant ; NSF CAREER grant ; Robert Martin Ayers Sciences Fund ; Robert Martin Ayers Sciences Fund ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation ; National Science Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; CNPq ; CNPq ; CAPES/PROAP-IF ; CAPES/PROAP-IF ; Department of Energy ; Department of Energy ; National Science Foundation ; National Science Foundation ; NSF ; NSF ; Swiss National Science Foundation ; Swiss National Science Foundation ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA through Hubble Fellowship - Space Telescope Science Institute ; NASA ; NASA ; NSF CAREER grant ; NSF CAREER grant ; Robert Martin Ayers Sciences Fund ; Robert Martin Ayers Sciences Fund ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; National Science Foundation ; National Science Foundation
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000549174700001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/82700
Collection中国科学院国家天文台
Corresponding AuthorPlacco, Vinicius M.
Affiliation1.Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA
2.JINA Ctr Evolut Elements, E Lansing, MI 48824 USA
3.Univ Fed Goias, Inst Estudos Socioambientais, Planetaria, BR-74055140 Goiania, Go, Brazil
4.Univ Fed Goias, Inst Fis, Campus Samambaia, BR-74001970 Goiania, Go, Brazil
5.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
6.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing, Peoples R China
7.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing, Peoples R China
8.Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
9.Texas A&M Univ, Mitchell Inst Fundamental Phys & Astron, College Stn, TX 77843 USA
10.Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 USA
11.Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA
12.Konan Univ, Fac Sci & Engn, Dept Phys, 8-9-1 Okamoto, Kobe, Hyogo 6588501, Japan
13.Univ Geneva, Geneva Observ, Maillettes 51, CH-1290 Sauverny, Switzerland
14.Observ Carnegie Inst Sci, Pasadena, CA 91101 USA
15.Univ Florida, Bryant Space Sci Ctr, Dept Astron, Gainesville, FL 32611 USA
16.MIT, Dept Phys, Cambridge, MA 02139 USA
17.MIT, Kavli Inst Astrophys & Space Res, 77 Massachusetts Ave, Cambridge, MA 02139 USA
18.San Francisco State Univ, Dept Phys & Astron, San Francisco, CA 94132 USA
Recommended Citation
GB/T 7714
Placco, Vinicius M.,Santucci, Rafael M.,Yuan, Zhen,et al. The R-process Alliance: The Peculiar Chemical Abundance Pattern of RAVE J183013.5-455510[J]. ASTROPHYSICAL JOURNAL,2020,897(1):21.
APA Placco, Vinicius M..,Santucci, Rafael M..,Yuan, Zhen.,Mardini, Mohammad K..,Holmbeck, Erika M..,...&Zepeda, Joseph.(2020).The R-process Alliance: The Peculiar Chemical Abundance Pattern of RAVE J183013.5-455510.ASTROPHYSICAL JOURNAL,897(1),21.
MLA Placco, Vinicius M.,et al."The R-process Alliance: The Peculiar Chemical Abundance Pattern of RAVE J183013.5-455510".ASTROPHYSICAL JOURNAL 897.1(2020):21.
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