Results 61 to 70 of about 15,815 (162)
On the Origin of the Variety of Velocity Dispersion Profiles of Galaxies
The Astrophysical JournalObserved and simulated galaxies exhibit a significant variation in their velocity dispersion profiles. We examine the inner and outer slopes of stellar velocity dispersion profiles using integral field spectroscopy data from two surveys, SAMI (for z < 0 ...
San Han +10 more
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The Astrophysical JournalRobust estimation of star formation rates (SFRs) at higher redshifts ( z ≳ 1) using UV–optical–near-infrared (NIR) photometry is contingent on the ability of spectral energy distribution (SED) fitting to constrain the dust attenuation, stellar ...
Chandler Osborne, Samir Salim
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The Astrophysical Journal LettersThe electron density ( n _e ) of the interstellar medium (ISM) in star-forming galaxies is intimately linked to star formation and ionization condition.
Sijia Li +19 more
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, 2004 We describe the model of protogalaxy formation around the cluster of primordial black holes with a minimum extension of standard cosmological model. Namely, it is supposed, that a mass fraction of the universe ~10^-3 is composed of the compact clusters of primordial (relict) black holes produced during the phase transitions in the early universe. These
Dokuchaev, Vyacheslav +2 more
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Nuclear Physics B, 1985 Abstract The present theories of galaxy formation are reviewed. The relation between peculiar velocities and the correlation function of galaxies points to the possibility that galaxies do not form uniformly everywhere. Scale invariant properties of the cluster-cluster correlations are discussed. Comparing the correlation functions in a dimensionless
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The Impact of Molecular Hydrogen Cooling on the Galaxy Formation Threshold
The Astrophysical Journal LettersWe study the impact of molecular (H _2 ) and atomic (H i ) hydrogen cooling on the galaxy formation threshold. We calculate the fraction of dark matter (DM) halos that exceeds a critical mass required for star formation, M _crit ( z ), as a function of ...
Ethan O. Nadler
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Formation of Triaxial Galaxy [PDF]
Journal of Astronomy and Space Sciences, 1987 Results of N-body simulation of dissipationless cold collapse of spherical gravitating system are presented. We compared the results with properties of elliptical galaxies. The system gradually evolved to triaxial system. The projected density profile is
Jang-Hyeon Park, Soo-Yong Kim
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The Astrophysical JournalWe present a spectroscopic study of low-mass galaxies (LMGs;10 ^8 ≤ M _* / M _⊙ ≤ 10 ^9 ) at z ∼ 0.15 in the Cosmic Evolution Survey field, and compare it to a control sample of intermediate-mass galaxies (IMGs; 10 ^9 ≤ M _* / M _⊙ ≤ 10 ^10 ) at z ∼ 0 ...
Zahra Sattari +6 more
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The Astrophysical Journal LettersWe report on the statistical analysis of quasar photoevaporation at z ∼ 2.2 by comparing the density of surrounding Ly α emitters (LAEs) and continuum-selected galaxies, based on the imaging data of the Hyper Suprime-Cam (HSC) Subaru Strategic Program ...
Yuta Suzuki +5 more
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Galaxy formation with BECDM - I. Turbulence and relaxation of idealized haloes. [PDF]
Mon Not R Astron Soc, 2017 Mocz P +6 more
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