Results 21 to 30 of about 205,088 (284)

Dynamic regulation of the transcriptome and proteome of the equine embryo during maternal recognition of pregnancy

open access: yesFASEB BioAdvances, Volume 4, Issue 12, Page 775-797, December 2022., 2022
Abstract During initial maternal recognition of pregnancy (MRP), the equine embryo displays a series of unique events characterized by rapid blastocyst expansion, secretion of a diverse array of molecules, and transuterine migration to interact with the uterine surface.
Alba Rudolf Vegas   +6 more
wiley   +1 more source

Galaxy Populations in Groups and Clusters: Evidence for a Characteristic Stellar Mass Scale at M ∗ ∼ 109.5 M ⊙

open access: yesThe Astrophysical Journal, 2023
We use the DR9 of the DESI legacy imaging survey and SDSS galaxy groups to measure the conditional luminosity function (CLF) for groups with halo mass M _h ≥ 10 ^12 M _⊙ and redshift 0.01 ≤ z ≤ 0.08, down to a limiting r -band magnitude of M _r = −10 to −
Jiacheng Meng   +5 more
doaj   +1 more source

Search for Extremely Metal-poor Stars with Gemini-N/Graces. I. Chemical-abundance Analysis

open access: yesThe Astrophysical Journal, 2023
We present stellar parameters and abundances of 13 elements for 18 very metal-poor (VMP; [Fe/H] < –2.0) stars, selected as extremely metal-poor (EMP; [Fe/H] < –3.0) candidates from the Sloan Digital Sky Survey and Large sky Area Multi-Object Fiber ...
Miji Jeong   +7 more
doaj   +1 more source

Modeling abundances in galaxies [PDF]

open access: yesProceedings of the International Astronomical Union, 2015
AbstractWe reviewed chemical evolution of galaxies using our cosmological simulations.
Philip Taylor, Chiaki Kobayashi
openaire   +2 more sources

On the oxygen abundance in our Galaxy [PDF]

open access: yesAstronomy & Astrophysics, 2003
7 pages, 2 figures, accepted for publication in Astronomy and ...
L. S. Pilyugin   +2 more
openaire   +2 more sources

Chemical Analysis of the Brightest Star of the Cetus II Ultrafaint Dwarf Galaxy Candidate

open access: yesThe Astrophysical Journal, 2023
We present a detailed chemical abundance analysis of the brightest star in the ultrafaint dwarf (UFD) galaxy candidate Cetus II from high-resolution Magellan/MIKE spectra.
K. B. Webber   +44 more
doaj   +1 more source

Mass–Metallicity Relationship of SDSS Star-forming Galaxies: Population Synthesis Analysis and Effects of Star Burst Length, Extinction Law, Initial Mass Function, and Star Formation Rate

open access: yesThe Astrophysical Journal, 2023
We investigate the mass–metallicity relationship of star-forming galaxies by analyzing the absorption line spectra of ∼200,000 galaxies in the Sloan Digital Sky Survey.
Eva Sextl   +3 more
doaj   +1 more source

The Origin of the Nuclear Star-forming Ring in NGC 3182

open access: yesThe Astronomical Journal, 2023
We investigate the stellar and ionized gas kinematics, and stellar populations of NGC 3182 galaxy using integral field spectrograph data from the Calar Alto Legacy Integral Field Area survey. We try to clarify the nature of the ring structure in NGC 3182.
Mina Pak   +3 more
doaj   +1 more source

The Stellar Chemical Abundances of Simulated Massive Galaxies at $z = 2$ [PDF]

open access: yes, 2022
We analyze the stellar abundances of massive galaxies ($\log M_\ast/M_\odot>10.5$) at $z=2$ in the IllustrisTNG simulation with the goal of guiding the interpretation of current and future observations, particularly from the James Webb Space Telescope. We find that the effective size, $R_e$, of galaxies strongly affects the abundance measurements: both
arxiv   +1 more source

The Chemical Composition of Red Giants, AGB Stars and Planetary Nebulae [PDF]

open access: yes, 2006
The determinations of element abundances in red-giant stars and in particular in AGB stars are reviewed and the resulting abundances are compared with those obtained for planetary nebulae in the Galaxy and in nearby galaxies.
Gustafsson, Bengt, Wahlin, Rurik
core   +2 more sources

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