Results 61 to 70 of about 4,025,746 (356)

Is there a mass discrepancy in the Cepheid binary OGLE-LMC-CEP0227? [PDF]

open access: yes, 2011
Context. The Cepheid mass discrepancy, the difference between masses predicted from stellar evolution and stellar pulsation calculations, is a challenge for the understanding of stellar astrophysics. Recent models of the eclipsing binary Cepheid OGLE-LMC-
Bono   +36 more
core   +1 more source

A STEEPER THAN LINEAR DISK MASS–STELLAR MASS SCALING RELATION [PDF]

open access: yes, 2016
The disk mass is among the most important input parameter for every planet formation model to determine the number and masses of the planets that can form.
I. Pascucci   +16 more
semanticscholar   +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

THE UNIVERSAL STELLAR MASS-STELLAR METALLICITY RELATION FOR DWARF GALAXIES [PDF]

open access: yesThe Astrophysical Journal, 2013
24 pages, 13 figures, 1 machine-readable table included in "Other formats," accepted to ApJ.
James S. Bullock   +6 more
openaire   +6 more sources

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

open access: yesPopulation Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +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 dependence of convective core overshooting on stellar mass [PDF]

open access: yes, 2016
Convective core overshooting extends the main-sequence lifetime of a star. Evolutionary tracks computed with overshooting are quite different from those that use the classical Schwarzschild criterion, which leads to rather different predictions for the ...
A. Claret, Guillermo Torres Iaa, Cfa
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

Supernovae and Stellar Mass Loss [PDF]

open access: yesHighlights of Astronomy, 1986
AbstractType I supernovae can be modeled as the carbon deflagration of white dwarfs and Type II supernovae as the explosions of massive stars with hydrogen envelopes. The massive stars at the ends of their lives are expected to be red supergiants, which are observed to have slow, dense winds.
openaire   +2 more sources

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

open access: yesPopulation Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva   +6 more
wiley   +1 more source

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