Detection of the actinide Th in an r-process-enhanced star with accretion origin
The thorium and six second-peak r-process element (56 ≤ Z ≤ 72) abundances are determined for the α-poor star LAMOST J1124+4535 based on a high-resolution spectrum obtained with the High Dispersion Spectrograph on the Subaru Telescope. The age of J1124+4535 is 11.3 ± 4.4 Gyr using thorium and other...
Gespeichert in:
| Hauptverfasser: | , , , , , , |
|---|---|
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2024 April 9
|
| In: |
The astrophysical journal
Year: 2024, Jahrgang: 965, Heft: 1, Pages: 1-8 |
| ISSN: | 1538-4357 |
| DOI: | 10.3847/1538-4357/ad2fa4 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3847/1538-4357/ad2fa4 Verlag, lizenzpflichtig, Volltext: https://dx.doi.org/10.3847/1538-4357/ad2fa4 
|
| Verfasserangaben: | Qianfan Xing, Gang Zhao, Wako Aoki, Haining Li, Jingkun Zhao, Tadafumi Matsuno, and Takuma Suda |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 190358518X | ||
| 003 | DE-627 | ||
| 005 | 20241205174438.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 240927s2024 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.3847/1538-4357/ad2fa4 |2 doi | |
| 035 | |a (DE-627)190358518X | ||
| 035 | |a (DE-599)KXP190358518X | ||
| 035 | |a (OCoLC)1475313215 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Xing, Qianfan |e VerfasserIn |0 (DE-588)1343346258 |0 (DE-627)1903586593 |4 aut | |
| 245 | 1 | 0 | |a Detection of the actinide Th in an r-process-enhanced star with accretion origin |c Qianfan Xing, Gang Zhao, Wako Aoki, Haining Li, Jingkun Zhao, Tadafumi Matsuno, and Takuma Suda |
| 264 | 1 | |c 2024 April 9 | |
| 300 | |b Illustrationen | ||
| 300 | |a 8 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Gesehen am 27.09.2024 | ||
| 520 | |a The thorium and six second-peak r-process element (56 ≤ Z ≤ 72) abundances are determined for the α-poor star LAMOST J1124+4535 based on a high-resolution spectrum obtained with the High Dispersion Spectrograph on the Subaru Telescope. The age of J1124+4535 is 11.3 ± 4.4 Gyr using thorium and other r-process element abundances. J1124+4535 is confirmed to be a Galactic halo metal-poor ([Fe/H] = −1.27 ± 0.1) star with extreme r-process element overabundance ([Eu/Fe] = 1.13 ± 0.08) and α element deficiency ([Mg/Fe] = −0.31 ± 0.09) by the LAMOST-Subaru project. Along with the subsolar α-to-iron ratios (e.g., [Mg/Fe], [Si/Fe], [Ca/Fe]), the relatively low abundances of Na, Cr, Ni, and Zn in J1124+4535 show a significant departure from the general trends of the Galactic halo but are in good agreement with those of dwarf galaxies. The chemical abundances and kinematics of J1124+4535 suggest it was formed in the late stage of star formation in a dwarf galaxy that has been disrupted by the Milky Way. The star formation of its progenitor dwarf galaxy lasted more than 2 Gyr and has been affected by a rare r-process event before the occurrence of accretion event. | ||
| 700 | 1 | |a Zhao, Gang |e VerfasserIn |4 aut | |
| 700 | 1 | |a Aoki, Wako |e VerfasserIn |4 aut | |
| 700 | 1 | |a Li, Haining |e VerfasserIn |4 aut | |
| 700 | 1 | |a Zhao, Jingkun |e VerfasserIn |4 aut | |
| 700 | 1 | |a Matsuno, Tadafumi |e VerfasserIn |0 (DE-588)1343346533 |0 (DE-627)1903587220 |4 aut | |
| 700 | 1 | |a Suda, Takuma |e VerfasserIn |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t The astrophysical journal |d London : Institute of Physics Publ., 1995 |g 965(2024), 1, Artikel-ID 79, Seite 1-8 |h Online-Ressource |w (DE-627)269019219 |w (DE-600)1473835-1 |w (DE-576)077662733 |x 1538-4357 |7 nnas |a Detection of the actinide Th in an r-process-enhanced star with accretion origin |
| 773 | 1 | 8 | |g volume:965 |g year:2024 |g number:1 |g elocationid:79 |g pages:1-8 |g extent:8 |a Detection of the actinide Th in an r-process-enhanced star with accretion origin |
| 856 | 4 | 0 | |u https://doi.org/10.3847/1538-4357/ad2fa4 |x Verlag |x Resolving-System |z lizenzpflichtig |3 Volltext |
| 856 | 4 | 0 | |u https://dx.doi.org/10.3847/1538-4357/ad2fa4 |x Verlag |z lizenzpflichtig |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20240927 | ||
| 993 | |a Article | ||
| 994 | |a 2024 | ||
| 998 | |g 1343346533 |a Matsuno, Tadafumi |m 1343346533:Matsuno, Tadafumi |d 700000 |d 714000 |d 714100 |e 700000PM1343346533 |e 714000PM1343346533 |e 714100PM1343346533 |k 0/700000/ |k 1/700000/714000/ |k 2/700000/714000/714100/ |p 6 | ||
| 999 | |a KXP-PPN190358518X |e 458380167X | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"note":["Gesehen am 27.09.2024"],"name":{"displayForm":["Qianfan Xing, Gang Zhao, Wako Aoki, Haining Li, Jingkun Zhao, Tadafumi Matsuno, and Takuma Suda"]},"type":{"bibl":"article-journal","media":"Online-Ressource"},"id":{"eki":["190358518X"],"doi":["10.3847/1538-4357/ad2fa4"]},"recId":"190358518X","relHost":[{"id":{"zdb":["1473835-1"],"eki":["269019219"],"issn":["1538-4357"]},"type":{"bibl":"periodical","media":"Online-Ressource"},"part":{"pages":"1-8","year":"2024","volume":"965","text":"965(2024), 1, Artikel-ID 79, Seite 1-8","extent":"8","issue":"1"},"note":["Gesehen am 18.01.2022","Fortsetzung der Druck-Ausgabe"],"name":{"displayForm":["publ. in coll. with the American Astronomical Society. S. Chandrasekhar, managing ed"]},"titleAlt":[{"title":"The astrophysical journal / 1"},{"title":"ApJ"}],"physDesc":[{"extent":"Online-Ressource"}],"disp":"Detection of the actinide Th in an r-process-enhanced star with accretion originThe astrophysical journal","title":[{"title_sort":"astrophysical journal","title":"The astrophysical journal","subtitle":"an international review of spectroscopy and astronomical physics"}],"pubHistory":["Vol. 447 (1995) [?]-"],"recId":"269019219","origin":[{"dateIssuedDisp":"[1995?]-","publisher":"Institute of Physics Publ. ; Univ. of Chicago Press","publisherPlace":"London ; Chicago, Ill. [u.a.]"}],"language":["eng"]}],"language":["eng"],"origin":[{"dateIssuedDisp":"2024 April 9","dateIssuedKey":"2024"}],"title":[{"title_sort":"Detection of the actinide Th in an r-process-enhanced star with accretion origin","title":"Detection of the actinide Th in an r-process-enhanced star with accretion origin"}],"person":[{"display":"Xing, Qianfan","role":"aut","given":"Qianfan","family":"Xing","roleDisplay":"VerfasserIn"},{"display":"Zhao, Gang","role":"aut","given":"Gang","family":"Zhao","roleDisplay":"VerfasserIn"},{"role":"aut","display":"Aoki, Wako","roleDisplay":"VerfasserIn","family":"Aoki","given":"Wako"},{"family":"Li","given":"Haining","roleDisplay":"VerfasserIn","display":"Li, Haining","role":"aut"},{"display":"Zhao, Jingkun","role":"aut","family":"Zhao","given":"Jingkun","roleDisplay":"VerfasserIn"},{"role":"aut","display":"Matsuno, Tadafumi","roleDisplay":"VerfasserIn","family":"Matsuno","given":"Tadafumi"},{"family":"Suda","given":"Takuma","roleDisplay":"VerfasserIn","display":"Suda, Takuma","role":"aut"}],"physDesc":[{"noteIll":"Illustrationen","extent":"8 S."}]} | ||
| SRT | |a XINGQIANFADETECTIONO2024 | ||