Results 61 to 70 of about 300,825 (275)

Detecting Population III Stars through Tidal Disruption Events in the Era of JWST and Roman

The Astrophysical Journal Letters
The 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, Janet N. Y. Chang, Lixin Dai, Priyamvada Natarajan   +3 more
doaj   +1 more source

Can very massive stars avoid Pair-instability Supernovae?

, 2007
Very massive primordial stars ($140 M_{\odot} < M < 260 M_{\odot}$) are supposed to end their lives as pair-instability supernovae. Such an event can be traced by a typical chemical signature in low metallicity stars, but at the present time, this ...
Ekström, S., Maeder, A., Meynet, G.
core   +2 more sources

THE MOST IRON-DEFICIENT STARS AS THE POLLUTED POPULATION III STARS [PDF]

The Astrophysical Journal, 2015
Accepted for publication in ApJ ...
Yutaka Komiya, Takuma Suda, Masayuki Y. Fujimoto   +2 more
openaire   +2 more sources

A Systematic Review of Evidence on the Clinical Effectiveness of Surveillance Imaging in Children With Medulloblastoma and Ependymoma

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Surveillance imaging aims to detect tumour relapse before symptoms develop, but it's unclear whether earlier detection of relapse leads to better outcomes in children and young people (CYP) with medulloblastoma and ependymoma. This systematic review aims to identify relevant literature to determine the efficacy of surveillance magnetic ...
Lucy Shepherd, Melissa Taylor, Helen Fulbright, Bob Phillips   +3 more
wiley   +1 more source

Spectral Evolution of Rotating Population III Stars

The Astrophysical Journal
Population III (Pop III) stars, the first generation of stars formed from primordial gas, played a fundamental role in shaping the early Universe through their influence on cosmic reionization, early chemical enrichment, and the formation of the first ...
Jake B. Hassan, Rosalba Perna, Matteo Cantiello, Tyler M. Parsotan, Davide Lazzati, Nathan Walker   +5 more
doaj   +1 more source

Background Light from Population III Stars [PDF]

Symposium - International Astronomical Union, 1987
It has been proposed (e.g. Carr, Bond and Arnett 1984) that the first generation of stars may have been Very Massive Objects (VMOs, of mass above 200 M⊙) which existed at large redshifts and left a large fraction of the mass of the universe in black hole remnants which now provide the dynamical ‘dark matter’.
openaire   +1 more source

Prognostic Impact of Treatment Modalities, Including Targeted Compartmental Radio‐Immunotherapy, in a Cohort of Neuroblastoma Patients With CNS Metastases at Relapse

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Neuroblastoma (NB) with central nervous system (CNS) metastases is rare at diagnosis, but occurs more often during relapse/progression. Patients with CNS metastases face a dismal prognosis, with no standardized curative treatment available.
Vicente Santa‐Maria Lopez, Anna Felip‐Badia, Marina Caballero‐Bellon, Nazaret Sanchez‐Sierra, Alicia Castañeda, Moira Garraus, Maite Gorostegui, Margarida Simão‐Rafael, Juan Pablo Muñoz, Marta Perez‐Somarriba, Salvador Mañe, Mariana Cecilia Planells, Sara Perez‐Jaume, Jaume Mora   +13 more
wiley   +1 more source

Aeos: The Impact of Population III Initial Mass Function and Star-by-star Models in Galaxy Simulations

The Astrophysical Journal
We explore the effect of variations in the Population III initial mass function (IMF) and star-by-star feedback on early galaxy formation and evolution using the A eos simulations. We compare simulations with two different Population III IMFs: M _char  = 
Kaley Brauer, Jennifer Mead, John H. Wise, Greg L. Bryan, Mordecai-Mark Mac Low, Alexander P. Ji, Andrew Emerick, Eric P. Andersson, Anna Frebel, Benoit Côté   +9 more
doaj   +1 more source

Revisiting The First Galaxies: The epoch of Population III stars

, 2013
We investigate the transition from primordial Population III (Pop III) star formation to normal Pop II star formation in the first galaxies using new cosmological hydrodynamic simulations.
Gnedin, Nickolay Y., Gnedin, Oleg Y., Muratov, Alexander L., Zemp, Marcel   +3 more
core   +1 more source

Supernova Nucleosynthesis in the Early Universe [PDF]

, 2008
The first metal enrichment in the universe was made by supernova (SN) explosions of population (Pop) III stars. The trace remains in abundance patterns of extremely metal-poor (EMP) stars.
Amati, Cayrel, Depagne, Hideyuki Umeda, Keiichi Maeda, Ken'ichi Nomoto, Nobuyuki Iwamoto, Nozomu Tominaga   +7 more
core   +1 more source