Results 21 to 30 of about 282,692 (200)

Satellite galaxies in the Illustris-1 simulation: anisotropic locations around relatively isolated hosts [PDF]

open access: yes, 2019
We investigate the locations of satellite galaxies in the z = 0 redshift slice of the hydrodynamical Illustris-1 simulation. As expected from previous work, the satellites are distributed anisotropically in the plane of the sky, with a preference for ...
Brainerd, Tereasa G., Yamamoto, Masaya
core   +1 more source

Constraining the Stellar Mass Function in the Galactic Center via Mass Loss from Stellar Collisions

open access: yesAdvances in Astronomy, 2011
The dense concentration of stars and high-velocity dispersions in the Galactic center imply that stellar collisions frequently occur. Stellar collisions could therefore result in significant mass loss rates.
Douglas Rubin, Abraham Loeb
doaj   +1 more source

Reconciling observed and simulated stellar halo masses [PDF]

open access: yes, 2018
We use cosmological hydrodynamical simulations of Milky-Way-mass galaxies from the FIRE project to evaluate various strategies for estimating the mass of a galaxy's stellar halo from deep, integrated-light images.
Chan, Tsang Keung   +8 more
core   +5 more sources

Mass–Metallicity Relationship of SDSS Star-forming Galaxies: Population Synthesis Analysis and Effects of Star Burst Length, Extinction Law, Initial Mass Function, and Star Formation Rate

open access: yesThe Astrophysical Journal, 2023
We investigate the mass–metallicity relationship of star-forming galaxies by analyzing the absorption line spectra of ∼200,000 galaxies in the Sloan Digital Sky Survey.
Eva Sextl   +3 more
doaj   +1 more source

Precise Stellar Mass and Mass-Luminosity Data [PDF]

open access: yesSymposium - International Astronomical Union, 1997
Recent progress in observing and data reduction methods for precise mass and mass-luminosity determinations in binary systems are briefly reviewed. The foundations appear to have been laid for a new burst of accurate data. Detailed model simulations of the individual systems are the best way to use these data to critically test the theoretical models ...
openaire   +1 more source

Mass loss and stellar superwinds [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2017
Mass loss bridges the gap between massive stars and supernovae (SNe) in two major ways: (i) theoretically, it is the amount of mass lost that determines the mass of the star prior to explosion and (ii) observations of the circumstellar material around SNe may teach us the type of progenitor that made the SN.
openaire   +3 more sources

AGN Jet Mass Loading and Truncation by Stellar Winds [PDF]

open access: yes, 2006
Active Galactic Nuclei can produce extremely powerful jets. While tightly collimated, the scale of these jets and the stellar density at galactic centers implies that there will be many jet/star interactions, which can mass-load the jet through stellar ...
Blackman, Eric G., Hubbard, Alexander
core   +3 more sources

Mass Measurements of Stellar and Intermediate-Mass Black Holes [PDF]

open access: yesSpace Science Reviews, 2013
28 pages, 12 figures. Accepted for publication in Space Science Reviews (DOI 10.1007/s11214-013-0030-6). Also to appear in hard cover in the Space Sciences Series of ISSI "The Physics of Accretion onto Black Holes" (Springer Publisher).
Casares, J., Jonker, P.G.
openaire   +6 more sources

The stellar mass assembly of galaxies from z=0 to z=4. Analysis of a sample selected in the rest-frame near-infrared with Spitzer [PDF]

open access: yes, 2008
Using a sample of ~28,000 sources selected at 3.6-4.5 microns with Spitzer observations of the HDF-N, the CDF-S, and the Lockman Hole (surveyed area: ~664 arcmin^2), we study the evolution of the stellar mass content of the Universe at ...
Armando Gil de Paz   +21 more
core   +3 more sources

Radio observations of stellar mass loss [PDF]

open access: yesSymposium - International Astronomical Union, 1979
A program to search for steady-state thermal emissions from stars has been in progress for several years in Canada (Purton 1976). In this program we have specifically excluded flaring objects (such as β Lyr or HR1099) where non-thermal emission is probably responsible.
Sun Kwok, C. R. Purton
openaire   +1 more source

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