Results 41 to 50 of about 197,137 (264)
Detecting Population III Stars through Tidal Disruption Events in the Era of JWST and Roman [PDF]
Astrophysical Journal LettersThe first-generation metal-free stars, referred to as Population III (Pop III) stars, are believed to be the first objects to form out of the pristine gas in the very early Universe.
Rudrani Kar Chowdhury +3 more
semanticscholar +1 more source
Metal‐poor stars observed with the automated planet finder telescope. III . CEMP ‐no stars are the descendant of population III stars [PDF]
Astronomical Notes - Astronomische Nachrichten, 2021 In this study, we report a probabilistic insight into the stellar mass and supernovae (SNe) explosion energy of the possible progenitors of five CEMP-no stars. This was done by a direct comparison between the abundance ratios [X/Fe] of the light-elements
Nour Aldein Almusleh +6 more
semanticscholar +1 more source
EFFECTS OF BBN ON POPULATION III STARS [PDF]
Thinking, Observing and Mining the Universe, 2004 The presence (or absence) of CNO elements in the primordial gas determines different behaviours in population III stars formation and evolution: we therefore present an analysis of the main channels for the synthesis of these elements in BBN in order to understand, within a reliable interval, their abundance in the primordial material.
openaire +2 more sources
Radiative regulation of Population III star formation [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 We explore the impact of ultraviolet (UV) radiation from massive Population III (Pop III) stars of 25, 40, 80, and 120 M_sun on the subsequent Pop III star formation. In this paper, particular attention is paid to the dependence of radiative feedback on the mass of source Pop III star.
Hasegawa, Kenji +2 more
openaire +2 more sources
Fast-rotating massive Population III stars as possible sources of extreme N enrichment in high-redshift galaxies [PDF]
Astronomy & AstrophysicsWe present an analysis of the chemical compositions in high-redshift galaxies, with a focus on the nitrogen-enhanced galaxies GN-z11 and CEERS-1019.
D. Nandal, Y. Sibony, Sophie Tsiatsiou
semanticscholar +1 more source
WHERE ARE THE LOW-MASS POPULATION III STARS? [PDF]
The Astrophysical Journal, 2016 ABSTRACT We study the number and the distribution of low-mass Population III (Pop III) stars in the Milky Way. In our numerical model, hierarchical formation of dark matter minihalos and Milky-Way-sized halos are followed by a high-resolution cosmological simulation.
Tomoaki Ishiyama +5 more
openaire +2 more sources
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.
Tsiatsiou, Sofia +3 more
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Evolution of Low‐Mass Population III Stars [PDF]
The Astrophysical Journal, 2007 We present the evolutionary models of metal-free stars in the mass range from 0.8 to 1.2 Msun with up-to-date input physics. The evolution is followed to the onset of hydrogen mixing into a convection, driven by the helium flash at red giant or asymptotic giant branch phase.
Suda, Takuma +2 more
openaire +2 more sources
A Hide-and-seek Game: Looking for Population III Stars during the Epoch of Reionization through the He ii λ1640 Line [PDF]
The gas surrounding first-generation (Population III, hereafter Pop III) stars is expected to emit a distinct signature in the form of the He ii recombination line at 1640 Å(He ii λ1640).
A. Venditti +6 more
semanticscholar +1 more source
The Ultimately Large Telescope: What Kind of Facility Do We Need to Detect Population III Stars? [PDF]
Astrophysical Journal, 2020 The launch of the James Webb Space Telescope (JWST) will open up a new window for observations at the highest redshifts, reaching out to . However, even with this new facility, the first stars will remain out of reach, as they are born in small minihalos
A. Schauer, N. Drory, V. Bromm
semanticscholar +1 more source