Results 81 to 90 of about 4,244,877 (397)

Stellar atmospheres, atmospheric extension and fundamental parameters: weighing stars using the stellar mass index [PDF]

open access: yes, 2016
One of the great challenges in understanding stars is measuring their masses. The best methods for measuring stellar masses include binary interaction, asteroseismology and stellar evolution models, but these methods are not ideal for red giant and supergiant stars.
arxiv   +1 more source

ON THE MAXIMUM MASS OF STELLAR BLACK HOLES [PDF]

open access: yesThe Astrophysical Journal, 2010
15 pages, ApJ ...
Jarrod R. Hurley   +9 more
openaire   +5 more sources

Central BH Mass of Tidal Disruption Event Candidate SDSS J0159 through Long-term Optical Variabilities

open access: yesThe Astrophysical Journal, 2023
In this manuscript, central BH mass is determined in the tidal disruption event (TDE) candidate SDSS J0159, through the 9 yr long variabilities, in order to check whether the virial BH mass is consistent with the mass estimated by other independent ...
XueGuang Zhang
doaj   +1 more source

Stellar Ages and Metallicities of Central and Satellite Galaxies: Implications for Galaxy Formation and Evolution

open access: yes, 2009
Using a large SDSS galaxy group catalogue, we study how the stellar ages and metallicities of central and satellite galaxies depend on stellar mass and halo mass.
Bosch, Frank C. van den   +6 more
core   +1 more source

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

The evolution of the stellar mass versus halo mass relationship [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2015
We present an analysis of the predictions made by the Galform semi-analytic galaxy formation model for the evolution of the relationship between stellar mass and halo mass. We show that for the standard implementations of supernova feedback and gas reincorporation used in semi-analytic models, this relationship is predicted to evolve weakly over the ...
Mitchell, Peter D.   +3 more
openaire   +5 more sources

THE EFFECTS OF THE LOCAL ENVIRONMENT AND STELLAR MASS ON GALAXY QUENCHING TO z ∼ 3 [PDF]

open access: yes, 2016
We study the effects of the local environment and stellar mass on galaxy properties using a mass complete sample of quiescent and star-forming systems in the COSMOS field at .
B. Darvish   +6 more
semanticscholar   +1 more source

Constraining Stellar-mass Black Hole Mergers in AGN Disks Detectable with LIGO [PDF]

open access: yesAstrophysical Journal, 2017
Black hole (BH) mergers detectable with the Laser Interferometer Gravitational-wave Observatory (LIGO) can occur in active galactic nucleus (AGN) disks.
B. McKernan   +11 more
semanticscholar   +1 more source

Revealing the Galaxy–Halo Connection through Machine Learning

open access: yesThe Astrophysical Journal, 2023
Understanding the connections between galaxy stellar mass, star formation rate, and dark matter halo mass represents a key goal of the theory of galaxy formation. Cosmological simulations that include hydrodynamics, physical treatments of star formation,
Ryan Hausen   +7 more
doaj   +1 more source

Stellar Masses and Radii as Constraints on Stellar Models [PDF]

open access: yesInternational Astronomical Union Colloquium, 1993
AbstractThe current status of empirical data on stellar masses and radii of sufficient accuracy to give constraints on stellar models is reviewed. Results from the best-studied eclipsing binaries can already trace the main-sequence evolution of 1-10 M⊙ stars in considerable detail and will be even more useful when supplemented by chemical abundance ...
openaire   +1 more source

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