Results 21 to 30 of about 7,707,602 (355)
Wide binary stars with non-coeval components
Open Astronomy, 2022 We have the estimated masses of components of visual binaries from their spectral classification. We have selected pairs in which the less massive component looks more evolved. Spectral observations of some of these pairs were made, and at least one pair,
Malkov Oleg, Kniazev Alexey
doaj +1 more source
Stellar mass as the ‘glocal’ driver of galaxies’ stellar population properties [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT The properties of the stellar populations in a galaxy are known to correlate with the amount and the distribution of stellar mass. We take advantage of the maps of light-weighted mean stellar age $\mathit {\mathrm{ Age}_{\mathrm{ wr}}}$ and metallicity $\mathit {\mathrm{ Z}_{*\mathrm{ wr}}}$ for a sample of 362 galaxies from the
Stefano Zibetti, Anna R Gallazzi
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Universe, 2021 The growing database of exoplanets has shown us the statistical characteristics of various exoplanet populations, providing insight towards their origins.
Jonathan H. Jiang +4 more
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THE MASS DISTRIBUTION OF STELLAR-MASS BLACK HOLES [PDF]
The Astrophysical Journal, 2011 We perform a Bayesian analysis of the mass distribution of stellar-mass black holes using the observed masses of 15 low-mass X-ray binary systems undergoing Roche lobe overflow and five high-mass, wind-fed X-ray binary systems. Using Markov Chain Monte Carlo calculations, we model the mass distribution both parametrically---as a power law, exponential,
Farr, Will M. +6 more
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First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies [PDF]
, 2017 The IllustrisTNG project is a new suite of cosmological magneto-hydrodynamical simulations of galaxy formation performed with the Arepo code and updated models for feedback physics.
A. Pillepich +10 more
semanticscholar +1 more source
A New Census of the 0.2 < z < 3.0 Universe. I. The Stellar Mass Function [PDF]
Astrophysical Journal, 2019 There has been a long-standing factor-of-two tension between the observed star formation rate density and the observed stellar mass buildup after z ∼ 2.
J. Leja +5 more
semanticscholar +1 more source
Star formation and the origin of stellar masses [PDF]
Nature, 1992 AbstractWe present a new model to explain stellar mass distributions in different stellar environments. In our model, the protostar phase is terminated, when the protostellar core embedded in a molecular clump experiences a collision with another star or protostellar clump, which ejects the protostellar core from its parent clump.
Podsiadlowski, P, Price, N
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No Significant Evolution of Relations between Black Hole Mass and Galaxy Total Stellar Mass Up to z ∼ 2.5 [PDF]
Astrophysical Journal, 2019 We investigate the cosmic evolution of the ratio between black hole (BH) mass (MBH) and host galaxy total stellar mass (Mstellar) out to z ∼ 2.5 for a sample of 100 X-ray-selected moderate-luminosity, broad-line active galactic nuclei (AGNs) in the ...
H. Suh +6 more
semanticscholar +1 more source
Scaling Relations for Solar-Like Oscillations: A Review
Frontiers in Astronomy and Space Sciences, 2020 The scaling relations for solar-like oscillations provide a translation of the features of the stochastic low-degree modes of oscillation in the Sun to predict the features of solar-like oscillations in other stars with convective outer layers.
Saskia Hekker, Saskia Hekker
doaj +1 more source
Merging stellar-mass binary black holes [PDF]
Physics reports, 2018 The LIGO and Virgo detectors have recently directly observed gravitational waves from several mergers of pairs of stellar-mass black holes, as well as from one merging pair of neutron stars.
I. Mandel, A. Farmer
semanticscholar +1 more source