Results 81 to 90 of about 4,605,994 (345)
Imprints of galaxy evolution on H ii regions Memory of the past uncovered by the CALIFA survey
, 2014 H ii regions in galaxies are the sites of star formation and thus particular places to understand the build-up of stellar mass in the universe. The line ratios of this ionized gas are frequently used to characterize the ionization conditions.
Bekeraite, S. +29 more
core +1 more source
Analyzing derived metallicities and ionization parameters from model-based determinations in ionized gaseous nebulae [PDF]
, 2011 We analyze the reliability of oxygen abundances and ionization parameters obtained from different diagnostic diagrams. For this, we compiled from the literature observational emission line intensities and oxygen abundance of 446 star-forming regions ...
Allende Prieto +89 more
core +3 more sources
A working model for cytoplasmic assembly of H/ACA snoRNPs
FEBS Letters, EarlyView.Dyskerin is the component of nuclear H/ACA ribonucleoproteins (RNPs) endowed with pseudouridine synthase catalytic activity. Two isoforms of human dyskerin have been characterized: the abundant Iso1, mainly nuclear, and the shorter Iso3, mainly cytoplasmic but occasionally imported into nuclei.
Alberto Angrisani, Maria Furia
wiley +1 more source
The Metallicity–Electron Temperature Relationship in H ii Regions
The Astrophysical JournalH ii region heavy-element abundances throughout the Galactic disk provide important constraints to theories of the formation and evolution of the Milky Way.
Dana S. Balser, Trey V. Wenger
doaj +1 more source
A quick start guide to BOND: Bayesian Oxygen and Nitrogen abundance Determinations in H II regions using strong and semistrong lines [PDF]
, 2022 N. Vale Asari +3 more
openalex +1 more source
, 2018 Massive stars are the main objects that illuminate H II regions and they evolve quickly to end their lives in core-collapse supernovae (CCSNe). Thus it is important to investigate the association between CCSNe and H II regions.
Eldridge, J. J. +3 more
core +1 more source
FEBS Letters, EarlyView.Antimicrobial resistance (AMR) is of huge importance, resulting in over 1 million deaths each year. Here, we describe how a new drug, enmetazobactam, designed to help fight resistant bacterial diseases, inhibits a key enzyme (GES‐1) responsible for AMR. Our data show it is a more potent inhibitor than the related tazobactam, with high‐level computation
Michael Beer +10 more
wiley +1 more source
The Astrophysical JournalWe investigate the emergence phase of young star clusters in the nearby spiral galaxy NGC 628. We use JWST NIRCam and MIRI observations to create spatially resolved maps of the Pa α 1.87 μ m and Br α 4.05 μ m hydrogen recombination lines, as well as 3.3 ...
Alex Pedrini +23 more
doaj +1 more source
Observations of the Galaxy NGC 3077 in the Narrow-Band [S II] and Hα Filters
Open Astronomy, 2011 We present observations of the H I tidal arm near a dwarf galaxy NGC 3077 (member of the M81 galaxy group) in the narrow-band [S II] and Hα filters. Observations were carried out in 2011 March with the 2 m RCC telescope at the NAO Rozhen, Bulgaria.
Andjelić M. +4 more
doaj +1 more source
bond: Bayesian Oxygen and Nitrogen abundance Determinations in giant H ii regions using strong and semistrong lines [PDF]
, 2016 We present BOND, a Bayesian code to simultaneously derive oxygen and nitrogen abundances in giant H II regions. It compares observed emission lines to a grid of photoionization models without assuming any relation between O/H and N/O.
N. V. Asari +9 more
semanticscholar +1 more source