Disc fragmentation and oligarchic growth of protostellar systems in low-metallicity gas clouds
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab2799
Abstract: We study low-metallicity star formation with a set of high-resolution hydrodynamics simulations for various gas metallicities over a wide range 0–$10^{-3} \ {\rm Z_{\bigodot }}$. Our simulations follow non-equilibrium chemistry and radiative cooling by adopting… read more here.
Keywords: growth protostellar; disc fragmentation; gas; low metallicity ... See more keywords
On the origin of nitrogen at low metallicity
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DOI: 10.1093/mnras/stab376
Abstract: Understanding the evolution of the N/O ratio in the interstellar medium (ISM) of galaxies is essential if we are to complete our picture of the chemical evolution of galaxies at high redshift, since most observational… read more here.
Keywords: origin nitrogen; ratio; nitrogen low; low metallicity ... See more keywords
Detection of low-metallicity warm plasma in a galaxy overdensity environment at z ̃ 0.2
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DOI: 10.1093/mnras/sty042
Abstract: We present results from the analysis of a multiphase O VI - broad Ly-alpha absorber at z = 0.19236 in the HST/COS spectrum of PG 1121+422. The low and intermediate ionization metal lines in this… read more here.
Keywords: galaxy; plasma; gas; low metallicity ... See more keywords
Diagnostics for the elemental composition of protostellar objects
Sign Up to like & getrecommendations! Published in 2017 at "Astronomy Reports"
DOI: 10.1134/s1063772917020019
Abstract: The sensitivity of a number of aspects of the chemical evolution of a molecular cloud to its elemental composition is investigated. Four models are considered: one with high metallicity, for which the evolution proceeds exclusively… read more here.
Keywords: elemental composition; evolution; atoms heavy; low metallicity ... See more keywords