The evolutionary pathways of disk-, bulge-, and halo-dominated galaxies
To break the degeneracy among galactic stellar components, we extract kinematic structures using the framework that was described in Du et al. For example, the concept of stellar halos is generalized to weakly rotating structures that are composed of loosely bound stars, which can hence be associate...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
2021 October 4
|
| In: |
The astrophysical journal
Year: 2021, Volume: 919, Issue: 2, Pages: 1-26 |
| ISSN: | 1538-4357 |
| DOI: | 10.3847/1538-4357/ac0e98 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3847/1538-4357/ac0e98
|
| Author Notes: | Min Du, Luis C. Ho, Victor P. Debattista, Annalisa Pillepich, Dylan Nelson, Lars Hernquist, Rainer Weinberger |
MARC
| LEADER | 00000caa a22000002c 4500 | ||
|---|---|---|---|
| 001 | 1810985781 | ||
| 003 | DE-627 | ||
| 005 | 20220820225711.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 220720s2021 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.3847/1538-4357/ac0e98 |2 doi | |
| 035 | |a (DE-627)1810985781 | ||
| 035 | |a (DE-599)KXP1810985781 | ||
| 035 | |a (OCoLC)1341464096 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Du, Min |e VerfasserIn |0 (DE-588)126388105X |0 (DE-627)1811986161 |4 aut | |
| 245 | 1 | 4 | |a The evolutionary pathways of disk-, bulge-, and halo-dominated galaxies |c Min Du, Luis C. Ho, Victor P. Debattista, Annalisa Pillepich, Dylan Nelson, Lars Hernquist, Rainer Weinberger |
| 264 | 1 | |c 2021 October 4 | |
| 300 | |a 26 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Pdf lässt sich nicht öffnen | ||
| 500 | |a Gesehen am 02.08.2022 | ||
| 520 | |a To break the degeneracy among galactic stellar components, we extract kinematic structures using the framework that was described in Du et al. For example, the concept of stellar halos is generalized to weakly rotating structures that are composed of loosely bound stars, which can hence be associated to both disk and elliptical type morphologies. By applying this method to central galaxies with stellar mass 1010−11.5 M ⊙ from the TNG50 simulation, we identify three broadly-defined types of galaxies: galaxies dominated by disk, by bulge, or by stellar halo structures. We then use the simulation to infer the underlying connection between the growth of structures and physical processes over cosmic time. By tracing galaxies back in time, we recognize three fundamental regimes: an early phase of evolution (z ≳ 2), and internal and external (mainly mergers) processes that act at later times. We find that disk- and bulge-dominated galaxies are not significantly affected by mergers since z ∼ 2. The difference in their present-day structures originates from two distinct evolutionary pathways—extended versus compact—that are likely to be determined by their parent dark matter halos (i.e., nature). In contrast, slow rotator elliptical galaxies are typically halo-dominated, forming by external processes (e.g., mergers) in the later phase (i.e., nurture). This picture challenges the general idea that elliptical galaxies are the same objects as classical bulges. In observations, both bulge- and halo-dominated galaxies are likely to be classified as early-type galaxies with compact morphology and quiescent star formation. However, here we find them to have very different evolutionary histories. | ||
| 700 | 1 | |a Ho, Luis C. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Debattista, Victor P. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Pillepich, Annalisa |e VerfasserIn |0 (DE-588)1151829854 |0 (DE-627)1012339327 |0 (DE-576)423800841 |4 aut | |
| 700 | 1 | |a Nelson, Dylan |e VerfasserIn |0 (DE-588)115182805X |0 (DE-627)101233600X |0 (DE-576)42382581X |4 aut | |
| 700 | 1 | |a Hernquist, Lars |d 1954- |e VerfasserIn |0 (DE-588)1264244401 |0 (DE-627)1813088241 |4 aut | |
| 700 | 1 | |a Weinberger, Rainer |d 1989- |e VerfasserIn |0 (DE-588)1151825670 |0 (DE-627)1012332446 |0 (DE-576)498072851 |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t The astrophysical journal |d London : Institute of Physics Publ., 1995 |g 919(2021), 2, Artikel-ID 135, Seite 1-26 |h Online-Ressource |w (DE-627)269019219 |w (DE-600)1473835-1 |w (DE-576)077662733 |x 1538-4357 |7 nnas |a The evolutionary pathways of disk-, bulge-, and halo-dominated galaxies |
| 773 | 1 | 8 | |g volume:919 |g year:2021 |g number:2 |g elocationid:135 |g pages:1-26 |g extent:26 |a The evolutionary pathways of disk-, bulge-, and halo-dominated galaxies |
| 856 | 4 | 0 | |u https://doi.org/10.3847/1538-4357/ac0e98 |x Verlag |x Resolving-System |z lizenzpflichtig |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20220720 | ||
| 993 | |a Article | ||
| 994 | |a 2021 | ||
| 998 | |g 115182805X |a Nelson, Dylan |m 115182805X:Nelson, Dylan |d 700000 |d 714000 |d 714200 |d 700000 |d 728500 |e 700000PN115182805X |e 714000PN115182805X |e 714200PN115182805X |e 700000PN115182805X |e 728500PN115182805X |k 0/700000/ |k 1/700000/714000/ |k 2/700000/714000/714200/ |k 0/700000/ |k 1/700000/728500/ |p 5 | ||
| 998 | |g 1151829854 |a Pillepich, Annalisa |m 1151829854:Pillepich, Annalisa |d 130000 |d 700000 |d 728500 |e 130000PP1151829854 |e 700000PP1151829854 |e 728500PP1151829854 |k 0/130000/ |k 0/700000/ |k 1/700000/728500/ |p 4 | ||
| 999 | |a KXP-PPN1810985781 |e 4170544773 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"relHost":[{"language":["eng"],"physDesc":[{"extent":"Online-Ressource"}],"id":{"issn":["1538-4357"],"zdb":["1473835-1"],"eki":["269019219"]},"recId":"269019219","part":{"pages":"1-26","extent":"26","issue":"2","volume":"919","year":"2021","text":"919(2021), 2, Artikel-ID 135, Seite 1-26"},"pubHistory":["Vol. 447 (1995) [?]-"],"origin":[{"publisherPlace":"London ; Chicago, Ill. [u.a.]","dateIssuedDisp":"[1995?]-","publisher":"Institute of Physics Publ. ; Univ. of Chicago Press"}],"type":{"media":"Online-Ressource","bibl":"periodical"},"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"}],"title":[{"title":"The astrophysical journal","subtitle":"an international review of spectroscopy and astronomical physics","title_sort":"astrophysical journal"}],"disp":"The evolutionary pathways of disk-, bulge-, and halo-dominated galaxiesThe astrophysical journal"}],"type":{"media":"Online-Ressource","bibl":"article-journal"},"note":["Pdf lässt sich nicht öffnen","Gesehen am 02.08.2022"],"origin":[{"dateIssuedDisp":"2021 October 4","dateIssuedKey":"2021"}],"recId":"1810985781","id":{"eki":["1810985781"],"doi":["10.3847/1538-4357/ac0e98"]},"physDesc":[{"extent":"26 S."}],"language":["eng"],"title":[{"title":"The evolutionary pathways of disk-, bulge-, and halo-dominated galaxies","title_sort":"evolutionary pathways of disk-, bulge-, and halo-dominated galaxies"}],"person":[{"given":"Min","display":"Du, Min","family":"Du","roleDisplay":"VerfasserIn","role":"aut"},{"display":"Ho, Luis C.","given":"Luis C.","family":"Ho","role":"aut","roleDisplay":"VerfasserIn"},{"role":"aut","roleDisplay":"VerfasserIn","family":"Debattista","display":"Debattista, Victor P.","given":"Victor P."},{"role":"aut","roleDisplay":"VerfasserIn","family":"Pillepich","display":"Pillepich, Annalisa","given":"Annalisa"},{"roleDisplay":"VerfasserIn","role":"aut","family":"Nelson","display":"Nelson, Dylan","given":"Dylan"},{"family":"Hernquist","roleDisplay":"VerfasserIn","role":"aut","given":"Lars","display":"Hernquist, Lars"},{"display":"Weinberger, Rainer","given":"Rainer","role":"aut","roleDisplay":"VerfasserIn","family":"Weinberger"}],"name":{"displayForm":["Min Du, Luis C. Ho, Victor P. Debattista, Annalisa Pillepich, Dylan Nelson, Lars Hernquist, Rainer Weinberger"]}} | ||
| SRT | |a DUMINHOLUIEVOLUTIONA2021 | ||