NAOC Open IR  > 星系宇宙学研究部
BAR FORMATION IN MILKY WAY TYPE GALAXIES
Polyachenko, E. V.1; Berczik, P.2,3,4; Just, A.2
2016
Source PublicationBALTIC ASTRONOMY
Volume25Issue:4Pages:411-418
AbstractMany barred galaxies, possibly including the Milky Way, have cusps in their centers. There is a widespread belief, however, that the usual bar instability, which occurs in bulgeless galaxy models, is impossible for cuspy models because of the presence of the inner Lindblad resonance for any pattern speed. At the same time, there is numerical evidence that the bar instability can form a bar. We analyze this discrepancy by performing accurate and diverse N-body simulations and calculating the normal modes. We show that bar formation in cuspy galaxies can be explained by taking into account the disk thickness. The exponential growth time is moderate (about 250 Myr) for typical current disk masses, but it increases considerably (by a factor of two or more) if the live halo and bulge are substituted by a rigid halo/bulge potential; the pattern speeds remain almost the same. Normal mode analysis with different disk mass favors a young bar hypothesis, according to which the bar instability has saturated only recently.
SubtypeArticle
KeywordGalaxy: Formation Galaxy: Evolution
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationDeutsche Forschungsgemeinschaft (DFG) through the Collaborative Research Centre(SFB 881 ; Deutsche Forschungsgemeinschaft (DFG) through the Collaborative Research Centre(SFB 881 ; Julich Supercomputing Center (JSC) ; Julich Supercomputing Center (JSC) ; Ministry of Finance of People's Republic of China(ZDYZ2008 - 2) ; Ministry of Finance of People's Republic of China(ZDYZ2008 - 2) ; Volkswagen Foundation(I/80 041-043 ; Volkswagen Foundation(I/80 041-043 ; Ministry of Science, Research and the Arts of Baden-Wurttemberg, Germany(823.219-439/30 ; Ministry of Science, Research and the Arts of Baden-Wurttemberg, Germany(823.219-439/30 ; German Research Foundation (DFG)(Sonderforschungsbereich SFB 881 ; German Research Foundation (DFG)(Sonderforschungsbereich SFB 881 ; Volkswagen Foundation under the Trilateral Partnerships grant(90411) ; Volkswagen Foundation under the Trilateral Partnerships grant(90411) ; Russian Foundation for Basic Research(15-52-12387 ; Russian Foundation for Basic Research(15-52-12387 ; Basic Research Program 'The active processes in galactic and extragalactic objects' of Department of Physical Sciences of RAS(OFN-15) ; Basic Research Program 'The active processes in galactic and extragalactic objects' of Department of Physical Sciences of RAS(OFN-15) ; NASU under the Main Astronomical Observatory GRID/GPU golowood computing cluster project ; NASU under the Main Astronomical Observatory GRID/GPU golowood computing cluster project ; Z2) ; Z2) ; I/81 396) ; I/81 396) ; 823.219-439/36) ; 823.219-439/36) ; A6) ; A6) ; 16-02-00649) ; 16-02-00649) ; Deutsche Forschungsgemeinschaft (DFG) through the Collaborative Research Centre(SFB 881 ; Deutsche Forschungsgemeinschaft (DFG) through the Collaborative Research Centre(SFB 881 ; Julich Supercomputing Center (JSC) ; Julich Supercomputing Center (JSC) ; Ministry of Finance of People's Republic of China(ZDYZ2008 - 2) ; Ministry of Finance of People's Republic of China(ZDYZ2008 - 2) ; Volkswagen Foundation(I/80 041-043 ; Volkswagen Foundation(I/80 041-043 ; Ministry of Science, Research and the Arts of Baden-Wurttemberg, Germany(823.219-439/30 ; Ministry of Science, Research and the Arts of Baden-Wurttemberg, Germany(823.219-439/30 ; German Research Foundation (DFG)(Sonderforschungsbereich SFB 881 ; German Research Foundation (DFG)(Sonderforschungsbereich SFB 881 ; Volkswagen Foundation under the Trilateral Partnerships grant(90411) ; Volkswagen Foundation under the Trilateral Partnerships grant(90411) ; Russian Foundation for Basic Research(15-52-12387 ; Russian Foundation for Basic Research(15-52-12387 ; Basic Research Program 'The active processes in galactic and extragalactic objects' of Department of Physical Sciences of RAS(OFN-15) ; Basic Research Program 'The active processes in galactic and extragalactic objects' of Department of Physical Sciences of RAS(OFN-15) ; NASU under the Main Astronomical Observatory GRID/GPU golowood computing cluster project ; NASU under the Main Astronomical Observatory GRID/GPU golowood computing cluster project ; Z2) ; Z2) ; I/81 396) ; I/81 396) ; 823.219-439/36) ; 823.219-439/36) ; A6) ; A6) ; 16-02-00649) ; 16-02-00649)
WOS KeywordHUBBLE-DEEP-FIELDS ; GALACTIC DISCS ; SATELLITES ; EVOLUTION ; CODE
Indexed BySCI ; ISTP
Language英语
Funding OrganizationDeutsche Forschungsgemeinschaft (DFG) through the Collaborative Research Centre(SFB 881 ; Deutsche Forschungsgemeinschaft (DFG) through the Collaborative Research Centre(SFB 881 ; Julich Supercomputing Center (JSC) ; Julich Supercomputing Center (JSC) ; Ministry of Finance of People's Republic of China(ZDYZ2008 - 2) ; Ministry of Finance of People's Republic of China(ZDYZ2008 - 2) ; Volkswagen Foundation(I/80 041-043 ; Volkswagen Foundation(I/80 041-043 ; Ministry of Science, Research and the Arts of Baden-Wurttemberg, Germany(823.219-439/30 ; Ministry of Science, Research and the Arts of Baden-Wurttemberg, Germany(823.219-439/30 ; German Research Foundation (DFG)(Sonderforschungsbereich SFB 881 ; German Research Foundation (DFG)(Sonderforschungsbereich SFB 881 ; Volkswagen Foundation under the Trilateral Partnerships grant(90411) ; Volkswagen Foundation under the Trilateral Partnerships grant(90411) ; Russian Foundation for Basic Research(15-52-12387 ; Russian Foundation for Basic Research(15-52-12387 ; Basic Research Program 'The active processes in galactic and extragalactic objects' of Department of Physical Sciences of RAS(OFN-15) ; Basic Research Program 'The active processes in galactic and extragalactic objects' of Department of Physical Sciences of RAS(OFN-15) ; NASU under the Main Astronomical Observatory GRID/GPU golowood computing cluster project ; NASU under the Main Astronomical Observatory GRID/GPU golowood computing cluster project ; Z2) ; Z2) ; I/81 396) ; I/81 396) ; 823.219-439/36) ; 823.219-439/36) ; A6) ; A6) ; 16-02-00649) ; 16-02-00649) ; Deutsche Forschungsgemeinschaft (DFG) through the Collaborative Research Centre(SFB 881 ; Deutsche Forschungsgemeinschaft (DFG) through the Collaborative Research Centre(SFB 881 ; Julich Supercomputing Center (JSC) ; Julich Supercomputing Center (JSC) ; Ministry of Finance of People's Republic of China(ZDYZ2008 - 2) ; Ministry of Finance of People's Republic of China(ZDYZ2008 - 2) ; Volkswagen Foundation(I/80 041-043 ; Volkswagen Foundation(I/80 041-043 ; Ministry of Science, Research and the Arts of Baden-Wurttemberg, Germany(823.219-439/30 ; Ministry of Science, Research and the Arts of Baden-Wurttemberg, Germany(823.219-439/30 ; German Research Foundation (DFG)(Sonderforschungsbereich SFB 881 ; German Research Foundation (DFG)(Sonderforschungsbereich SFB 881 ; Volkswagen Foundation under the Trilateral Partnerships grant(90411) ; Volkswagen Foundation under the Trilateral Partnerships grant(90411) ; Russian Foundation for Basic Research(15-52-12387 ; Russian Foundation for Basic Research(15-52-12387 ; Basic Research Program 'The active processes in galactic and extragalactic objects' of Department of Physical Sciences of RAS(OFN-15) ; Basic Research Program 'The active processes in galactic and extragalactic objects' of Department of Physical Sciences of RAS(OFN-15) ; NASU under the Main Astronomical Observatory GRID/GPU golowood computing cluster project ; NASU under the Main Astronomical Observatory GRID/GPU golowood computing cluster project ; Z2) ; Z2) ; I/81 396) ; I/81 396) ; 823.219-439/36) ; 823.219-439/36) ; A6) ; A6) ; 16-02-00649) ; 16-02-00649)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000396644700009
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8227
Collection星系宇宙学研究部
Affiliation1.Russian Acad Sci, Inst Astron, Pyatnitskaya 48, Moscow 119017, Russia
2.Astronom Rechen Inst ZAH, Monchhofstr 12-14, D-69120 Heidelberg, Germany
3.Natl Acad Sci Ukraine, Main Astron Observ, 27 Akad Zabolotnoho St, UA-03680 Kiev, Ukraine
4.Chinese Acad Sci, Natl Astron Observ China, 20A Datun Rd, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Polyachenko, E. V.,Berczik, P.,Just, A.. BAR FORMATION IN MILKY WAY TYPE GALAXIES[J]. BALTIC ASTRONOMY,2016,25(4):411-418.
APA Polyachenko, E. V.,Berczik, P.,&Just, A..(2016).BAR FORMATION IN MILKY WAY TYPE GALAXIES.BALTIC ASTRONOMY,25(4),411-418.
MLA Polyachenko, E. V.,et al."BAR FORMATION IN MILKY WAY TYPE GALAXIES".BALTIC ASTRONOMY 25.4(2016):411-418.
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