Results 61 to 70 of about 11,182,421 (303)
Tracing Early Enrichment Pathways: Chemical and Chemodynamical Analysis of Two CEMP-no Stars
The Astronomical JournalWe present a detailed high-resolution spectroscopic and chemodynamic analysis of two carbon stars, HE 1148−0037 and HE 1246−1344, using SUBARU High Dispersion Spectrograph spectra ( R ∼ 50,000).
Meenakshi Purandardas
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Binary Statistics Among Population II Stars [PDF]
International Astronomical Union Colloquium, 2004 AbstractPopulation II stars are old, metal-poor, Galactic halo stars with high proper motion. We have carried out a visual binary survey of 164 halo stars in the solar neighborhood (median distance 100 pc), using infrared speckle interferometry, adaptive optics, and wide field direct imaging.
H. Zinnecker, R. Köhler, H. Jahreiß
openaire +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Pediatric intramedullary low‐grade gliomas (PIMLGGs) are rare neoplasms that present unique clinical and management challenges. Although surgery remains the primary tool for tissue diagnosis and decompression, complete gross‐total resection is frequently unfeasible due to the infiltrative nature of these lesions.
Olga M. Sergeenko +5 more
wiley +1 more source
Astronomy & AstrophysicsGalactic globular clusters (GCs) were born shortly after the Big Bang. For these old stellar systems, the initial mass function (IMF) in the high-mass regime can never be observed directly, because stars more massive than about 1 M⊙ have evolved since ...
Carretta Eugenio
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Classification of Metal-Deficient Dwarfs in the Vilnius Photometric System
Open Astronomy, 2003 Methods used for the quantitative classification of metal-deficient stars in the Vilnius photometric system are reviewed. We present a new calibration of absolute magnitudes for dwarfs and subdwarfs, based on Hipparcos parallaxes.
Lazauskaitė R. +2 more
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Gravitational wave backgrounds and the cosmic transition from Population III to Population II stars
, 2009 Using the results of a numerical simulation which follows the evolution, metal enrichment and energy deposition of both Population III and II stars, we predict the redshift dependence of the formation rate of black hole remnants of Population III stars ...
MARASSI, STEFANIA +2 more
core +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Adult survivors of childhood acute lymphoblastic leukemia (ALL) are at risk of reduced exercise capacity, decreased physical activity levels, persistent fatigue, and neurocognitive deficits. The aim was to investigate exercise capacity and physical activity levels of adult survivors of childhood ALL and their associations with ...
Laura Jess +5 more
wiley +1 more source
Equilibria and oscillations of magnetised neutron stars
, 2010 We investigate equilibrium configurations and oscillation spectra of neutron stars,modelled as rotating magnetised fluid bodies in Newtonian gravity. We also explorethe idea that these model neutron stars could have dynamics analogous to rigid-bodyfree ...
Lander, Samuel Kenneth
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Astronomy & AstrophysicsThe FLAMES survey ‘Na-O anti-correlation and HB’ uncovered the modern standard for globular clusters (GCs), which is their ubiquitous multiple stellar populations (MPs) distinguished by the abundance of proton-capture elements.
Carretta Eugenio
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Some Photometric Characteristics of Population II Orbital Visual Binary Stars
Open Astronomy, 2003 A MV ,B−V diagram for metal-deficient, kinematically selected thick disk and halo visual binary stars with known orbits is presented. The magnitude differences Δm between the components are analyzed.
Bartkevičius A., Gudas A.
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