Matches in SemOpenAlex for { <https://semopenalex.org/work/W4206803730> ?p ?o ?g. }
- W4206803730 endingPage "5660" @default.
- W4206803730 startingPage "5639" @default.
- W4206803730 abstract "ABSTRACT Velocity dispersion (σ) is a key driver for galaxy structure and evolution. We here present a comprehensive semi-empirical approach to compute σ via detailed Jeans modelling assuming both a constant and scale-dependent mass-to-light ratio M*/L. We compare with a large sample of local galaxies from MaNGA and find that both models can reproduce the Faber–Jackson (FJ) relation and the weak dependence of σ on bulge-to-total (B/T) ratio (for B/T ≳ 0.25). The dynamical-to-stellar mass ratio within R ≲ Re can be fully accounted for by a gradient in M*/L. We then build velocity dispersion evolutionary tracks σap[M*, z] (within an aperture) along the main progenitor dark matter haloes assigning stellar masses, effective radii, and Sérsic indices via a variety of abundance matching and empirically motivated relations. We find: (1) clear evidence for downsizing in σap[M*, z] along the progenitor tracks; (2) at fixed stellar mass σ ∝ (1 + z)0.2−0.3 depending on the presence or not of a gradient in M*/L. We extract σap[M*, z] from the TNG50 hydrodynamic simulation and find very similar results to our models with constant M*/L. The increasing dark matter fraction within Re tends to flatten the σap[M*, z] along the progenitors at z ≳ 1 in constant M*/L models, while σap[M*, z] have a steeper evolution in the presence of a stellar gradient. We then show that a combination of mergers and gas accretion is likely responsible for the constant or increasing σap[M*, z] with time. Finally, our σap[M*, z] are consistent with a nearly constant and steep Mbh − σ relation at z ≲ 2, with black hole masses derived from the LX − M* relation." @default.
- W4206803730 created "2022-01-25" @default.
- W4206803730 creator A5003646453 @default.
- W4206803730 creator A5046055735 @default.
- W4206803730 creator A5052709687 @default.
- W4206803730 creator A5061666272 @default.
- W4206803730 creator A5076421579 @default.
- W4206803730 creator A5078074135 @default.
- W4206803730 date "2021-12-22" @default.
- W4206803730 modified "2023-10-01" @default.
- W4206803730 title "The weak dependence of velocity dispersion on disc fractions, mass-to-light ratio, and redshift: implications for galaxy and black hole evolution" @default.
- W4206803730 cites W1631788275 @default.
- W4206803730 cites W1841156365 @default.
- W4206803730 cites W1882938068 @default.
- W4206803730 cites W1951339183 @default.
- W4206803730 cites W1960284331 @default.
- W4206803730 cites W1963754183 @default.
- W4206803730 cites W1965779302 @default.
- W4206803730 cites W1971002020 @default.
- W4206803730 cites W1972460605 @default.
- W4206803730 cites W1974979979 @default.
- W4206803730 cites W1980266375 @default.
- W4206803730 cites W1980708053 @default.
- W4206803730 cites W1983897234 @default.
- W4206803730 cites W1984455890 @default.
- W4206803730 cites W1984849060 @default.
- W4206803730 cites W1987428675 @default.
- W4206803730 cites W1995606657 @default.
- W4206803730 cites W1996263110 @default.
- W4206803730 cites W1997242306 @default.
- W4206803730 cites W2005945664 @default.
- W4206803730 cites W2011739082 @default.
- W4206803730 cites W2015295900 @default.
- W4206803730 cites W2016094316 @default.
- W4206803730 cites W2017058515 @default.
- W4206803730 cites W2019028512 @default.
- W4206803730 cites W2023619683 @default.
- W4206803730 cites W2024575651 @default.
- W4206803730 cites W2025020969 @default.
- W4206803730 cites W2026132224 @default.
- W4206803730 cites W2027916929 @default.
- W4206803730 cites W2031715771 @default.
- W4206803730 cites W2037816996 @default.
- W4206803730 cites W2039852939 @default.
- W4206803730 cites W2040459248 @default.
- W4206803730 cites W2042905846 @default.
- W4206803730 cites W2045782407 @default.
- W4206803730 cites W2051293714 @default.
- W4206803730 cites W2054460092 @default.
- W4206803730 cites W2054750877 @default.
- W4206803730 cites W2062237753 @default.
- W4206803730 cites W2063182335 @default.
- W4206803730 cites W2069786714 @default.
- W4206803730 cites W2078257430 @default.
- W4206803730 cites W2079799663 @default.
- W4206803730 cites W2091865010 @default.
- W4206803730 cites W2094105562 @default.
- W4206803730 cites W2096414036 @default.
- W4206803730 cites W2096624375 @default.
- W4206803730 cites W2107337450 @default.
- W4206803730 cites W2112499287 @default.
- W4206803730 cites W2112633422 @default.
- W4206803730 cites W2113564534 @default.
- W4206803730 cites W2122893361 @default.
- W4206803730 cites W2124437867 @default.
- W4206803730 cites W2125835283 @default.
- W4206803730 cites W2129276959 @default.
- W4206803730 cites W2132500436 @default.
- W4206803730 cites W2133225317 @default.
- W4206803730 cites W2134796923 @default.
- W4206803730 cites W2135334980 @default.
- W4206803730 cites W2135894620 @default.
- W4206803730 cites W2141520494 @default.
- W4206803730 cites W2148092307 @default.
- W4206803730 cites W2149739542 @default.
- W4206803730 cites W2158622701 @default.
- W4206803730 cites W2159657041 @default.
- W4206803730 cites W2162399571 @default.
- W4206803730 cites W2165166025 @default.
- W4206803730 cites W2217377523 @default.
- W4206803730 cites W2223114498 @default.
- W4206803730 cites W2296349979 @default.
- W4206803730 cites W2340591551 @default.
- W4206803730 cites W2340980018 @default.
- W4206803730 cites W2352190790 @default.
- W4206803730 cites W2474336635 @default.
- W4206803730 cites W2479746388 @default.
- W4206803730 cites W2513116096 @default.
- W4206803730 cites W2521145848 @default.
- W4206803730 cites W2558134614 @default.
- W4206803730 cites W2568325162 @default.
- W4206803730 cites W2573838537 @default.
- W4206803730 cites W2574242818 @default.
- W4206803730 cites W2575798686 @default.
- W4206803730 cites W2589191947 @default.
- W4206803730 cites W2607075526 @default.
- W4206803730 cites W2766120540 @default.
- W4206803730 cites W2766252556 @default.