Results 121 to 130 of about 300,825 (275)

Detecting Population III Gamma-Ray Bursts with Einstein Probe and Space-based Multiband Astronomical Variable Objects Monitor

The Astrophysical Journal
High-redshift gamma-ray bursts (GRBs), putative counterparts of massive, low-metallicity population III (Pop III) stars, are a promising probe of the first stars.
Jun-Jie Wei, Qing-Bo Ma, Xue-Feng Wu
doaj   +1 more source

Dust during the Reionization

, 2003
The possibility that population III stars have reionized the Universe at redshifts greater than 6 has recently gained momentum with WMAP polarization results.
Aghanim, Boulanger, Cen, Cen, Depagne, Desert, Draine, Draine, E. Elfgren, F.-X. Désert, Fixsen, Fixsen, Gispert, Heger, Iwamoto, Kogut, Lagache, Pei, Pettini, Puget, Shioya, Songaila, Spergel, VandenBerg   +23 more
core   +2 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

An Observational Pursuit for Population III Stars in a Ly_alpha Emitter at z=6.33 through HeII Emission

, 2005
We present a very deep near-infrared spectroscopic observation of a strong Ly_alpha emitter at z=6.33, SDF J132440.6+273607, which we used to search for HeII 1640.
A. Marconi, El Eid M. F., Iwamuro F., Iye M., K. Aoki, K. Motohara, Kashikawa N., Kodaira K., M. Ajiki, Motohara K, R. Maiolino, T. Nagao, Taniguchi Y., Y. Shioya, Y. Taniguchi   +14 more
core   +1 more source

PICALM::MLLT10 translocated leukemia

FEBS Letters, EarlyView.
This comprehensive review of PICALM::MLLT10 translocated acute leukemia provides an in‐depth review of the structure and function of CALM, AF10, and the fusion oncoprotein (1). The multifaceted molecular mechanisms of oncogenesis, including nucleocytoplasmic shuttling (2), epigenetic modifications (3), and disruption of endocytosis (4), are then ...
John M. Cullen, Antonia C. Nakatsugawa, Natalie Barton, Henry Haines, Gary S. Stein, Janet L. Stein, Daniel S. Wechsler, Jessica L. Heath   +7 more
wiley   +1 more source

Where are the Population III Star Relics in the Simulated Milky Way Analogs?

The Astrophysical Journal
Using six Milky Way analogs with two different numerical resolutions from the Auriga simulation, we investigate the total mass, spatial distribution, and kinematics of the Population III (Pop III) star relics in the Milky Way analogs at z = 0.
Hang Yang, Liang Gao, Qi Guo, Haining Li, Shi Shao, Gang Zhao   +5 more
doaj   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

On the Pair-instability Supernova Origin of J1010+2358

The Astrophysical Journal Letters
The first (Population III) stars formed only out of H and He and were likely more massive than present-day stars. Massive Population III stars in the range 140–260 M _⊙ are predicted to end their lives as pair-instability supernovae (PISNe), enriching ...
Ása Skúladóttir, Ioanna Koutsouridou, Irene Vanni, Anish M. Amarsi, Romain Lucchesi, Stefania Salvadori, David S. Aguado   +6 more
doaj   +1 more source

Connecting the first galaxies with ultra faint dwarfs in the Local Group: chemical signatures of Population~III stars

, 2017
We investigate the star formation history and chemical evolution of isolated analogues of Local Group (LG) ultra faint dwarf galaxies (UFDs; stellar mass range of 10^2 solar mass < M_star
Besla, Gurtina, Bromm, Volker, Jeon, Myoungwon   +2 more
core   +1 more source

X-ray twinkles and Population III stars [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
Pop III stars are typically massive stars of primordial composition forming at the centers of the first collapsed dark matter structures. Here we estimate the optimal X-ray emission in the early universe for promoting the formation of Pop III stars.
openaire   +1 more source