Results 51 to 60 of about 11,182,421 (303)
Lithium abundance and stellar rotation in the Galactic halo and thick disc
Astronomy & AstrophysicsThe stellar evolution of lithium-rich (Li-rich) giant stars at very low metallicities remains largely unexplored to date. Using mainly two recent large LAMOST catalogues of field, low-mass giant stars (both Li-rich and Li-poor) with metallicities ranging
de la Reza R. +3 more
doaj +1 more source
Population III stars: hidden or disappeared?
, 2007 A Population III/Population II transition from massive to normal stars is predicted to occur when the metallicity of the star-forming gas crosses the critical range Zcr = 10-5+/-1Zsolar.
SCHNEIDER, Raffaella +10 more
core +1 more source
Referral Patterns and Diagnostic Timeliness in Pediatric Cancer: A Hospital‐Based Study in Indonesia
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Timely diagnosis and treatment are critical for improving survival among children with cancer. In low‐ and middle‐income countries (LMICs), delays are common and may be influenced by fragmented referral pathways and diagnostic limitations.
Nur Melani Sari +5 more
wiley +1 more source
Detailed Chemical Abundances of Stars in the Outskirts of the Tucana II Ultrafaint Dwarf Galaxy
The Astronomical Journal, 2023 We present chemical abundances and velocities of five stars between 0.3 and 1.1 kpc from the center of the Tucana II ultrafaint dwarf galaxy (UFD) from high-resolution Magellan/MIKE spectroscopy. We find that every star is deficient in metals (−3.6 < [Fe/
Anirudh Chiti +8 more
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Latino children are projected to make up nearly one‐third of United States (US) children by 2060, and many of their caregivers speak Spanish. Prior survey research has documented communication difficulties for Spanish‐speaking caregivers of children with cancer, but contemporary qualitative data are limited.
Jenny Ruiz +6 more
wiley +1 more source
Fossil Merger of a Population II Star
The Astrophysical Journal, 2018 Abstract We report on a fossil stellar merger for the subgiant primary of the visual binary HR 3750. The subgiant leads to an age τ ≃ 3.2 Gyr for a mass M A = 1.39 ± 0.09 M ⊙, in contradiction with its low iron-to-magnesium abundance that classifies it as a Population II (thick-disk) star.
Klaus Fuhrmann, Rolf Chini
openaire +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Cytomegalovirus (CMV) is a recognized trigger of immune thrombocytopenia (ITP); however, its incidence and impact on disease course in children remain controversial. Therefore, we aimed to characterize the clinical course of pediatric patients with CMV‐associated ITP.
Oded Gilad +9 more
wiley +1 more source
The kinematics of Population II stars
The Astrophysical Journal, 1985 Simple dynamical models are made to study the implications of recent kinematic data for Population II stars in the Galactic halo. The models assume a scale-free distribution of stars orbiting within a spherical potential with a flat rotation curve. This potential is consistent with the observed properties of the globular cluster system.
openaire +1 more source
New bright carbon stars found in the DFBS
, 2012 Carbon-rich stars (C stars) of Population II, such as CH giants, can provide direct information on the role of low-to-intermediate-mass stars of the Halo in early Galactic evolution. Moreover, accurate knowledge of the CH stellar population is a critical
SCLAVI, SILVIA +3 more
core +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Reduced bone mineral density (BMD) has been reported in survivors of childhood and young adult acute lymphoblastic leukaemia (ALL); however, data from cohorts treated with contemporary protocols and including matched controls remain limited.
Karen Schow Jensen +10 more
wiley +1 more source