Results 31 to 40 of about 201,594 (302)
Critical accretion rates for rapidly growing massive Population III stars [PDF]
Astronomy & Astrophysics, 2023 Efforts to understand the origin and growth of massive black holes observed in the early Universe have spurred a strong interest in the evolution and fate of rapidly-accreting primordial (metal-free) stars.
D. Nandal +5 more
semanticscholar +1 more source
The search for Population III stars [PDF]
Proceedings of the International Astronomical Union, 2008 AbstractPopulation III stars, the first generation of stars formed from primordial Big Bang material with a top–heavy IMF, should contribute substantially to the Universe reionization and they are crucial for understanding the early metal enrichment of galaxies.
Serego Alighieri S. +5 more
openaire +3 more sources
Unveiling the Contribution of Population III Stars in Primeval Galaxies at Redshift ≥6 [PDF]
Astrophysical Journal Letters, 2022 Detection of the first stars has remained elusive so far but their presence may soon be unveiled by upcoming JWST observations. Previous studies have not investigated the entire possible range of halo masses and redshifts that may help in their detection.
Shafqat Riaz, T. Hartwig, M. Latif
semanticscholar +1 more source
Constraining Warm Dark Matter and Population III Stars with the Global 21 cm Signal [PDF]
Astrophysical Journal, 2022 Upcoming ground- and space-based experiments may have sufficient accuracy to place significant constraints upon high-redshift star formation, Reionization, and dark matter (DM) using the global 21 cm signal of the intergalactic medium.
J. Hibbard +5 more
semanticscholar +1 more source
A Strong He ii λ1640 Emitter with an Extremely Blue UV Spectral Slope at z = 8.16: Presence of Population III Stars? [PDF]
Astrophysical Journal Letters, 2022 Cosmic hydrogen reionization and cosmic production of the first metals are major phase transitions of the Universe occurring during the first billion years after the Big Bang; however, these are still underexplored observationally. Using the JWST/NIRSpec
Xin Wang +14 more
semanticscholar +1 more source
The mass distribution of Population III stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 Extremely metal-poor (EMP) stars are uniquely informative on the nature of massive Population III stars. Modulo a few elements that vary with stellar evolution, the present-day photospheric abundances observed in EMP stars are representative of their natal gas cloud composition.
M. Fraser +4 more
openaire +2 more sources
Merger Conditions of Population III Protostar Binaries
The Astrophysical Journal, 2023 Massive close binary stars with extremely small separations have been observed, and they are possible progenitors of gravitational-wave sources. The evolution of massive binaries in the protostellar accretion stage is key to understanding their formation
Takanobu Kirihara +3 more
doaj +1 more source
On the properties of massive Population III stars and metal-free stellar populations [PDF]
, 2001 We present realistic models for massive Population III stars and stellar populations based on non-LTE model atmospheres, recent stellar evolution tracks and up-to-date evolutionary synthesis models, to study their spectral properties, including their ...
D. Schaerer
semanticscholar +1 more source
Footprints of Population III Stars in the Gravitational-wave Background [PDF]
Astrophysical Journal, 2021 We investigate detection prospects of the gravitational-wave background (GWB) that originates from the merging of compact objects formed by the collapse of Population III stars. Younger Population I/II stars lead to a GWB in the LIGO/Virgo frequency band
K. Martinović +3 more
semanticscholar +1 more source
The luminosity of Population III star clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 10 pages, 7 figures, to appear in ...
De Souza, Alexander L., Basu, Shantanu
openaire +3 more sources