Results 31 to 40 of about 682,654 (383)

The Effect of Metallicity on the Nonequilibrium Abundance of Hydrogen-dominated Exoplanet Atmospheres

open access: yesThe Astrophysical Journal, 2023
The atmospheric metallicity greatly influences the composition of exoplanet atmospheres. The effect of metallicity on the thermochemical equilibrium is well studied, though its effect on the disequilibrium abundance is loosely constrained. In this study,
Vikas Soni, Kinsuk Acharyya
doaj   +1 more source

A Surprising Lack of Metallicity Evolution with Redshift in the Long Gamma-Ray Burst Host Galaxy Population

open access: yesThe Astrophysical Journal, 2023
The number of long-duration gamma-ray burst (LGRB) host galaxies with measured metallicities and host masses has expanded sufficiently to investigate how the distributions of these properties change with redshift.
J. F. Graham, P. Schady, A. S. Fruchter
doaj   +1 more source

Metal–metal bonded compounds and metal clusters [PDF]

open access: yesInorganica Chimica Acta, 2015
Preface.
Falvello, Larry R., Murillo, Carlos A.
openaire   +3 more sources

Photometric Metallicity and Distance Estimates for ∼136,000 RR Lyrae Stars from Gaia Data Release 3

open access: yesThe Astrophysical Journal, 2023
We present a sample of 135,873 RR Lyrae stars (RRLs) with precise photometric metallicity and distance estimates from our newly calibrated P – ϕ _31 – R _21 –[Fe/H]/ P – R _21 –[Fe/H] and G -band absolute magnitude–metallicity relations.
Xin-Yi Li   +4 more
doaj   +1 more source

Nearby supernova host galaxies from the CALIFA Survey: II. SN environmental metallicity [PDF]

open access: yes, 2016
The metallicity of a supernova (SN) progenitor, together with its mass, is one of the main parameters that rules their outcome.
Badenes, C.   +18 more
core   +8 more sources

Chemodynamic evolution of dwarf galaxies in tidal fields [PDF]

open access: yes, 2016
The mass-metallicity relation shows that the galaxies with the lowest mass have the lowest metallicities. As most dwarf galaxies are in group environments, interaction effects such as tides could contribute to this trend.
Martel, Hugo   +2 more
core   +2 more sources

CHEMICAL CARTOGRAPHY WITH APOGEE: METALLICITY DISTRIBUTION FUNCTIONS AND THE CHEMICAL STRUCTURE OF THE MILKY WAY DISK [PDF]

open access: yes, 2015
Using a sample of 69,919 red giants from the SDSS-III/APOGEE Data Release 12, we measure the distribution of stars in the [α/Fe] versus [Fe/H] plane and the metallicity distribution functions (MDFs) across an unprecedented volume of the Milky Way disk ...
M. Hayden   +35 more
semanticscholar   +1 more source

Metallicity-dependent signatures in the Kepler planets [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2018
Using data from the California-Kepler-Survey (CKS) we study trends in planetary properties with host star metallicity for close-in planets. By incorporating knowledge of the properties of the planetary radius gap identified by the CKS survey, we are able
J. Owen, R. Murray-Clay
semanticscholar   +1 more source

Massive black hole binaries from runaway collisions: the impact of metallicity [PDF]

open access: yes, 2016
The runaway collision scenario is one of the most promising mechanisms to explain the formation of intermediate-mass black holes (IMBHs) in young dense star clusters.
M. Mapelli
semanticscholar   +1 more source

Cluster melting: new, limiting, and liminal phenomena

open access: yesAdvances in Physics: X, 2018
The thermodynamic behaviour of clusters and nanoscale structures is both a challenge to the statistical basis of the theory, and of paramount importance to experiment.
Nicola Gaston
doaj   +1 more source

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