Results 31 to 40 of about 4,926,824 (288)
Simulating galaxy formation with black hole driven thermal and kinetic feedback [PDF]
, 2016 The inefficiency of star formation in massive elliptical galaxies is widely believed to be caused by the interactions of an active galactic nucleus (AGN) with the surrounding gas.
R. Weinberger +10 more
semanticscholar +1 more source
Chaos and variance in galaxy formation [PDF]
Monthly notices of the Royal Astronomical Society, 2018 The evolution of galaxies is governed by equations with chaotic solutions: gravity and compressible hydrodynamics. While this micro-scale chaos and stochasticity has been well studied, it is poorly understood how it couples to macro-scale properties ...
B. Keller +3 more
semanticscholar +1 more source
Rapid Quenching of Galaxies at Cosmic Noon
The Astrophysical Journal, 2023 The existence of massive quiescent galaxies at high redshift seems to require rapid quenching, but it is unclear whether all quiescent galaxies have gone through this phase and what physical mechanisms are involved.
Minjung Park +8 more
doaj +1 more source
Symposium - International Astronomical Union, 1987 Theories of galaxy formation via hierarchical clustering of cold dark matter and by fragmentation of gaseous pancakes or shells are reviewed and compared. Dissipative processes are crucial to all theories of galaxy formation, and are discussed in terms of a simple model involving multiple cloud interactions.
openaire +1 more source
The Origin of Star Formation in Early-type Galaxies Inferred from Spatially Resolved Spectroscopy
The Astrophysical Journal, 2023 We investigate the origin of star formation activity in early-type galaxies with current star formation using spatially resolved spectroscopic data from the Mapping Nearby Galaxies at Apache Point Observatory in the Sloan Digital Sky Survey (SDSS).
Yun Hee Lee +4 more
doaj +1 more source
How to Measure Galaxy Star Formation Histories. II. Nonparametric Models [PDF]
Astrophysical Journal, 2018 Nonparametric star formation histories (SFHs) have long promised to be the “gold standard” for galaxy spectral energy distribution (SED) modeling as they are flexible enough to describe the full diversity of SFH shapes, whereas parametric models rule out
J. Leja +4 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 We present kinematics of six local extremely metal-poor galaxies (EMPGs) with low metallicities (0.016–0.098 Z _⊙ ) and low stellar masses (10 ^4.7 –10 ^7.6 M _⊙ ).
Yuki Isobe +51 more
doaj +1 more source
Publications of the Astronomical Society of the Pacific, 1996 Current ideas on the formation of the Galaxy are reviewed. Many of the observed characteristics of our Milky Way System are consistent with a scenario in which the Galaxy formed inside out, with the inner part of it evolving by rapid collapse of a single protogalaxy, while the outer halo was accreted over an extended period.
openaire +2 more sources
The EAGLE simulations of galaxy formation: calibration of subgrid physics and model variations [PDF]
, 2015 We present results from thirteen cosmological simulations that explore the parameter space of the "Evolution and Assembly of GaLaxies and their Environments" (EAGLE) simulation project.
R. Crain +13 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 We investigate the role of halo concentration in the formation of intracluster light (ICL) in galaxy groups and clusters, as predicted by a state-of-the-art semianalytic model of galaxy formation, coupled with a set of high-resolution dark-matter-only ...
Emanuele Contini +4 more
doaj +1 more source