NAOC Open IR
Bimodality of [alpha Fe]-[Fe/H] distributions is a natural outcome of dissipative collapse and disc growth in Milky Way-type galaxies
Khoperskov, Sergey1,2,3; Haywood, Misha4,5; Snaith, Owain4; Di Matteo, Paola4,5; Lehnert, Matthew5; Vasiliev, Evgenii3,6,7; Naroenkov, Sergey3; Berczik, Peter8,9,10,11
2021-03-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume501Issue:4Pages:5176-5196
AbstractBy using chemo-dynamical simulations of the Milky Way-type galaxies formation, we find that the two alpha-sequences are formed in quite different physical environments. The high-alpha sequence is formed early from a burst of star formation in a turbulent, compact gaseous disc that forms a thick disc. The low-alpha stellar population is the result of quiescent star formation supported by the slow accretion of enriched gas on to a radially extended thin disc. Feedback-driven outflows during the formation of the thick disc are responsible for the enrichment of the surrounding gaseous halo, which subsequently feeds the disc on a longer time-scale. During the thin disc phase, chemical evolution reaches an equilibrium metallicity and abundance, where the stars pile-up. This equilibrium metallicity decreases towards the outer disc, generating the ridge line that forms the low-alpha sequence. We identify a second mechanism capable of creating a low-alpha sequence in one of our simulations. A rapid shutdown of the star formation due to feedback at the end of the thick disc phase, suppresses the chemical enrichment of the halo gas, which, once accreted on to the star-forming disc, dilutes the interstellar medium at the beginning of the thin disc formation. Therefore, the bimodality is independent of any particular merger history, suggesting that it could be much more widespread than has been claimed. We also find that radial migration has a negligible effect on the [alpha/Fe]-[Fe/H] distribution over time, suggesting that alpha-bimodality results purely from the presence of different star formation regimes over the galaxy's formation.
KeywordGalaxy: abundances Galaxy: disc Galaxy: evolution Galaxy: formation galaxies: evolution galaxies: formation
Funding OrganizationANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; ANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; Russian Science Foundation ; Russian Science Foundation ; DIM ACAV+ funding ; DIM ACAV+ funding ; RFBR ; RFBR ; DFG ; DFG ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; National Science Foundation of China ; National Science Foundation of China ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Volkswagen Foundation under the Trilateral Partnerships grants ; Volkswagen Foundation under the Trilateral Partnerships grants ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus' ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus' ; ANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; ANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; Russian Science Foundation ; Russian Science Foundation ; DIM ACAV+ funding ; DIM ACAV+ funding ; RFBR ; RFBR ; DFG ; DFG ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; National Science Foundation of China ; National Science Foundation of China ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Volkswagen Foundation under the Trilateral Partnerships grants ; Volkswagen Foundation under the Trilateral Partnerships grants ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus' ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus' ; ANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; ANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; Russian Science Foundation ; Russian Science Foundation ; DIM ACAV+ funding ; DIM ACAV+ funding ; RFBR ; RFBR ; DFG ; DFG ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; National Science Foundation of China ; National Science Foundation of China ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Volkswagen Foundation under the Trilateral Partnerships grants ; Volkswagen Foundation under the Trilateral Partnerships grants ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus' ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus' ; ANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; ANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; Russian Science Foundation ; Russian Science Foundation ; DIM ACAV+ funding ; DIM ACAV+ funding ; RFBR ; RFBR ; DFG ; DFG ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; National Science Foundation of China ; National Science Foundation of China ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Volkswagen Foundation under the Trilateral Partnerships grants ; Volkswagen Foundation under the Trilateral Partnerships grants ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus' ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus'
DOI10.1093/mnras/staa3996
Language英语
Funding ProjectANR (Agence Nationale de la Recherche) through the MOD4Gaia project[ANR-15-CE31-0007] ; Russian Science Foundation[19-72-20089] ; DIM ACAV+ funding ; RFBR ; DFG[20-52-12009] ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; National Science Foundation of China[11673032] ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)[138713538 - SFB 881] ; Volkswagen Foundation under the Trilateral Partnerships grants[90411] ; Volkswagen Foundation under the Trilateral Partnerships grants[97778] ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus'[2020.02/0346] ; [RFMEFI62117X0011]
Funding OrganizationANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; ANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; Russian Science Foundation ; Russian Science Foundation ; DIM ACAV+ funding ; DIM ACAV+ funding ; RFBR ; RFBR ; DFG ; DFG ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; National Science Foundation of China ; National Science Foundation of China ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Volkswagen Foundation under the Trilateral Partnerships grants ; Volkswagen Foundation under the Trilateral Partnerships grants ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus' ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus' ; ANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; ANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; Russian Science Foundation ; Russian Science Foundation ; DIM ACAV+ funding ; DIM ACAV+ funding ; RFBR ; RFBR ; DFG ; DFG ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; National Science Foundation of China ; National Science Foundation of China ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Volkswagen Foundation under the Trilateral Partnerships grants ; Volkswagen Foundation under the Trilateral Partnerships grants ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus' ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus' ; ANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; ANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; Russian Science Foundation ; Russian Science Foundation ; DIM ACAV+ funding ; DIM ACAV+ funding ; RFBR ; RFBR ; DFG ; DFG ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; National Science Foundation of China ; National Science Foundation of China ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Volkswagen Foundation under the Trilateral Partnerships grants ; Volkswagen Foundation under the Trilateral Partnerships grants ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus' ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus' ; ANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; ANR (Agence Nationale de la Recherche) through the MOD4Gaia project ; Russian Science Foundation ; Russian Science Foundation ; DIM ACAV+ funding ; DIM ACAV+ funding ; RFBR ; RFBR ; DFG ; DFG ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; Chinese Academy of Sciences through the Silk Road Project at NAOC ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; President's International Fellowship (PIFI) forVisiting Scientists program of CAS ; National Science Foundation of China ; National Science Foundation of China ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ; Volkswagen Foundation under the Trilateral Partnerships grants ; Volkswagen Foundation under the Trilateral Partnerships grants ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus' ; NRF of Ukraine 'Leading and Young Scientists Research Support' - 'Astrophysical Relativistic Galactic Objects (ARGO): life cycle of active nucleus'
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000637320000036
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/78362
Collection中国科学院国家天文台
Corresponding AuthorKhoperskov, Sergey
Affiliation1.Leibniz Inst Astrophys Potsdam AIP, Sternwarte 16, D-14482 Potsdam, Germany
2.Max Planck Inst Extraterr Phys, Giessenbachstr 1, D-85748 Garching, Germany
3.Russian Acad Sci, Inst Astron, 48 Pyatnitskya St, Moscow 119017, Russia
4.PSL Univ, Observ Paris, CNRS, GEPI, 5 Pl Jules Janssen, F-92190 Meudon, France
5.Sorbonne Univ, Inst Astrophys Paris, UMR 7095, CNRS, 98Bis Bd Arago, F-75014 Paris, France
6.Southern Fed Univ, Rostov Na Donu 344090, Russia
7.Russian Acad Sci, Lebedev Phys Inst, 53 Leninsky Ave, Moscow 119991, Russia
8.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100101, Peoples R China
9.Chinese Acad Sci, Key Lab Computat Astrophys, 20A Datun Rd, Beijing 100101, Peoples R China
10.Heidelberg Univ, Zentrum Astron, Astron Rechen Inst, Moenchhofstr 12-14, D-69120 Heidelberg, Germany
11.Natl Acad Sci Ukraine, Main Astron Observ, MAO NASU, 27 Akad Zabolotnoho St, UA-03680 Kiev, Ukraine
Recommended Citation
GB/T 7714
Khoperskov, Sergey,Haywood, Misha,Snaith, Owain,et al. Bimodality of [alpha Fe]-[Fe/H] distributions is a natural outcome of dissipative collapse and disc growth in Milky Way-type galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,501(4):5176-5196.
APA Khoperskov, Sergey.,Haywood, Misha.,Snaith, Owain.,Di Matteo, Paola.,Lehnert, Matthew.,...&Berczik, Peter.(2021).Bimodality of [alpha Fe]-[Fe/H] distributions is a natural outcome of dissipative collapse and disc growth in Milky Way-type galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,501(4),5176-5196.
MLA Khoperskov, Sergey,et al."Bimodality of [alpha Fe]-[Fe/H] distributions is a natural outcome of dissipative collapse and disc growth in Milky Way-type galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 501.4(2021):5176-5196.
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