Metallicity evolution of AGNs from UV emission-lines based on a new index [PDF]
, 2014 We analyzed the evolution of the metallicity of the gas with the redshift for a sample of AGNs in a very wide redshift range ...
Cardaci, Monica V. +3 more
core +2 more sources
The Grism Lens-Amplified Survey from Space (GLASS) X. Sub-kpc resolution gas-phase metallicity maps at cosmic noon behind the Hubble Frontier Fields cluster MACS1149.6+2223 [PDF]
, 2016 (Abridged) We combine deep HST grism spectroscopy with a new Bayesian method to derive maps of gas-phase metallicity, nebular dust extinction, and star-formation rate for 10 star-forming galaxies at high redshift ($1 ...
Abramson, Louis E. +19 more
core +3 more sources
Metal to Orthogonal Metal Transition* [PDF]
Chinese Physics Letters, 2020 Orthogonal metal is a new quantum metallic state that conducts electricity but acquires no Fermi surface (FS) or quasiparticles, and hence orthogonal to the established paradigm of Landau’s Fermi-liquid (FL). Such a state may hold the key of understanding the perplexing experimental observations of quantum metals that are beyond FL ...
Chen, Chuang +3 more
openaire +4 more sources
SDSS-IV MaNGA : the impact of diffuse ionized gas on emission-line ratios, interpretation of diagnostic diagrams and gas metallicity measurements [PDF]
, 2016 Diffuse Ionized Gas (DIG) is prevalent in star-forming galaxies. Using a sample of 365 nearly face-on star-forming galaxies observed by MaNGA, we demonstrate how DIG in star-forming galaxies impacts the measurements of emission line ratios, hence the ...
Kai Zhang +28 more
semanticscholar +1 more source
The origin and evolution of the galaxy mass–metallicity relation [PDF]
, 2015 We use high-resolution cosmological zoom-in simulations from the Feedback in Realistic Environment (FIRE) project to study the galaxy mass–metallicity relations (MZR) from z=0–6.
Xiangcheng Ma +9 more
semanticscholar +1 more source
Are Stars with Planets Polluted? [PDF]
, 2001 We compare the metallicities of stars with radial velocity planets to the metallicity of a sample of field dwarfs. We confirm recent work indicating that the stars-with-planet sample as a whole is iron rich. However, the lowest mass stars tend to be iron
B. Chaboyer +5 more
core +3 more sources
The MOSDEF Survey: A Stellar Mass–SFR–Metallicity Relation Exists at z ∼ 2.3 [PDF]
, 2017 We investigate the nature of the relation among stellar mass, star formation rate, and gas-phase metallicity (the –SFR–Z relation) at high redshifts using a sample of 260 star-forming galaxies at z ∼ 2.3 from the MOSDEF survey.
R. Sanders +17 more
semanticscholar +1 more source
The Period Distribution of Hot Jupiters Is Not Dependent on Host Star Metallicity
The Astrophysical Journal Letters, 2023 The probability that a Sun-like star has a close-orbiting giant planet (period ≲1 yr) increases with stellar metallicity. Previous work provided evidence that the period distribution of close-orbiting giant planets is also linked to metallicity, hinting ...
Samuel W. Yee, Joshua N. Winn
doaj +1 more source
Bimodal Infrared Colors of the M87 Globular Cluster System: Peaks in the Metallicity Distribution
, 2007 The globular cluster (GC) systems of many galaxies reveal bimodal optical color distributions. Based on stellar evolutionary models and the bimodal colors and metallicities of Galactic GCs this is thought to reflect an underlying bimodal metallicity ...
Kundu, Arunav, Zepf, Stephen E.
core +1 more source
Metallicity gradients in the Sagittarius dwarf spheroidal Galaxy [PDF]
, 2001 Metallicity gradients in the Sagittarius dwarf Galaxy (Sgr) are investigated by using infrared photometric data from the 2MASS survey. To search for metallicity effects, the giant branch in a field situated near the Center of the Sgr is compared to the ...
Alard +16 more
core +3 more sources