Results 81 to 90 of about 300,825 (275)
, 2017 The search for metal-free stars has so far been unsuccessful, proving that if there are surviving stars from the first generation, they are rare, they have been polluted, or we have been looking in the wrong place.
Agarwal, Bhaskar +6 more
core +2 more sources
Population III Star Formation and IMF [PDF]
AIP Conference Proceedings, 2008 13 pages, 16 figures, To appear in "Proceedings of First Stars III," Eds. Brian W.
openaire +2 more sources
The Persistence of Population III Star Formation [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 We present a semi-analytic model of star formation in the early universe, beginning with the first metal-free stars. By employing a completely feedback-limited star formation prescription, stars form at maximum efficiency until the self-consistently calculated feedback processes halt formation.
Richard H Mebane +2 more
openaire +4 more sources
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou +10 more
wiley +1 more source
Zero Metallicity with Zero CPU Hours: Masses of the First Stars on the Laptop
The Astrophysical JournalWe develop an analytic model for the mass of the first stars forming in the centers of primordial gas clouds as a function of host halo mass, redshift, and degree of rotation.
James Gurian, Donghui Jeong, Boyuan Liu
doaj +1 more source
On Measuring the 21 cm Global Spectrum of the Cosmic Dawn with an Interferometer Array
The Astrophysical Journal, 2023 We theoretically investigate the recovery of the global spectrum (monopole) from visibilities (cross-correlation only) measured by an interferometer array and the feasibility of extracting the 21 cm signal of the cosmic dawn.
Xin Zhang +4 more
doaj +1 more source
First Stars III Conference Summary
, 2008 The understanding of the formation, life, and death of Population III stars, as well as the impact that these objects had on later generations of structure formation, is one of the foremost issues in modern cosmological research and has been an active ...
Abel, Tom +3 more
core +1 more source
Neutrino Background from Population III Stars [PDF]
Nuclear Physics B - Proceedings Supplements, 2011 Population III Stars (PopIII) are the first generation of stars formed from the collapse of the very first structures in the Universe. Their peculiar chemical composition (metal-free, resembling the Primordial Nucleosynthesis yields) affects their formation and evolution and makes them unusually big and hot stars.
openaire +2 more sources
Dark matter annihilations in Population III stars [PDF]
Physical Review D, 2008 We study the impact of the capture and annihilation of weakly interacting massive particles (WIMPs) on the evolution of Population III stars. With a suitable modification of the Geneva stellar evolution code, we study the evolution of 20 and 200M{sub {center_dot}} stars in dark matter halos with densities between 10{sup 8} and 10{sup 11} GeV/cm{sup 3 ...
Taoso, Marco +3 more
openaire +2 more sources
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Chronic kidney disease is a growing public health problem worldwide, and the number of patients requiring renal replacement therapy is steadily increasing. Türkiye has experienced a similar rise in both the incidence and prevalence of renal replacement therapy over the past decades; however, national‐level projections of future ...
Arzu Akgül +2 more
wiley +1 more source