Results 31 to 40 of about 301,814 (290)
The most massive Population III stars
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT Recent data from the JWST suggest that there are realistic prospects for detecting the earliest generation of stars at redshift ∼20. These metal-poor, gaseous Population III (Pop III) stars are likely in the mass range $10\!-\!10^3\, {\rm M}_{\odot }$ .
Chantavat, Teeraparb +2 more
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Magnetohydrodynamics of Population III Star Formation [PDF]
AIP Conference Proceedings, 2010 The evolution of collapsing primordial clouds and the formation of Population III (Pop III) protostars are investigated with three‐dimensional ideal MHD simulations. We follow the collapse of parsec‐sized primordial clouds down to the formation of protostars on sub‐AU scales.
Masahiro N. Machida +5 more
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The Impact of Patchy Reionization on Ultrafaint Dwarf Galaxies
The Astrophysical Journal, 2023 We investigate how patchy reionization affects the star formation history (SFH) and stellar metallicity of ultrafaint dwarf galaxies (UFDs). Patchy reionization refers to varying ultraviolet background strengths depending on a galaxy’s environment ...
Jaeeun Kim +5 more
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The Astrophysical Journal, 2023 We explore the chemodynamical properties of a sample of very metal-poor (VMP) stars selected from the Hamburg/ESO survey, matched with Gaia EDR3, in the phase space identified by the three integrals of motion ( L _z , E , I _3 ). Disk and halo orbits are
Daniela Carollo +3 more
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Modelling the chemical evolution of the Galaxy halo [PDF]
, 2013 We study the chemical evolution and formation of the Galactic halo through the analysis of its stellar metallicity distribution function and some key elemental abundance patterns.
Brusadin, G., Matteucci, F., Romano, D.
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The masses of Population III stars [PDF]
Monthly Notices of the Royal Astronomical Society, 1989 La formation de proto-etoiles de Population III est etudiee en suivant l'hypothese que la permanence des fluctuations de masse 10-1000 M○. apres l'ere de recombinaison peut etre importante dans la fragmentation des nuages massifs de masse ∼M J pour former des etoiles de population III, ou M J est la masse de Jeans pendant l'ere de ...
J. C. N. de Araujo, R. Opher
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Chemical constraints on the contribution of Population III stars to cosmic reionization
, 2013 Recent studies have highlighted that galaxies at z = 6-8 fall short of producing enough ionizing photons to reionize the IGM, and suggest that Population III stars could resolve this tension, because their harder spectra can produce ~10x more ionizing ...
Hennawi, Joseph F. +3 more
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The Evolution of Population III and Extremely Metal-poor Binary Stars
The Astrophysical Journal, 2023 Numerical simulations have now shown that Population III (Pop III) stars can form in binaries and small clusters and that these stars can be in close proximity to each other.
Sung-Han Tsai +4 more
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Nitrogen production in population III stars
Proceedings of the International Astronomical Union, 2022 AbstractThe first stars in the Universe have inherited their composition from primordial nucleosynthesis, so they have no metal. These stars, which are also named population III (pop III) stars, began the process of reionization in the Universe and contributed to the metal enrichment with heavy elements.
S. Tsiatsiou +3 more
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Can the James Webb Space Telescope detect isolated population III stars?
, 2011 Isolated population III stars are postulated to exist at approximately z=10-30 and may attain masses up to a few hundred solar masses. The James Webb Space telescope (JWST) is the next large space based infrared telescope and is scheduled for launch in ...
Rydberg, C. -E. +2 more
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