Results 11 to 20 of about 1,401,162 (283)

Carbon-enhanced metal-poor stars: a window on AGB nucleosynthesis and binary evolution. II. Statistical analysis of a sample of 67 CEMP-$s$ stars [PDF]

open access: yes, 2015
Many observed CEMP stars are found in binary systems and show enhanced abundances of $s$-elements. The origin of the chemical abundances of these CEMP-$s$ stars is believed to be accretion in the past of enriched material from a primary star in the AGB ...
Abate, C.   +3 more
core   +2 more sources

Health literacy as a challenge for health education

open access: yesSHS Web of Conferences, 2018
Scientific literature demonstrates a well-established correlation between education and health literacy; education and health outcomes; health literacy and health outcomes. Health literacy has a mediating role between education and health.
Stars I.
doaj   +1 more source

NGC 7419: A young open cluster with a number of very young intermediate mass pre-MS stars [PDF]

open access: yes, 2006
We present a photometric and spectroscopic study of the young open cluster NGC 7419, which is know to host a large number of classical Be stars for reasons not well understood.
Bhatt, Bhuwan Chandra   +3 more
core   +2 more sources

Unsupervised discovery of human activities from long‐time videos

open access: yesIET Computer Vision, 2015
In this study, the authors propose a complete framework based on a hierarchical activity model to understand and recognise activities of daily living in unstructured scenes.
Salma Elloumi   +4 more
doaj   +1 more source

Reprocessing the Hipparcos data for evolved giant stars II. Absolute magnitudes for the R-type carbon stars [PDF]

open access: yes, 2001
The Hipparcos Intermediate Astrometric Data for carbon stars have been reprocessed using an algorithm which provides an objective criterion for rejecting anomalous data points and constrains the parallax to be positive.
A. Jorissen   +52 more
core   +2 more sources

A Magnetospheric Dichotomy for Pulsars with Extreme Inclinations

open access: yesUniverse, 2021
In this work, we expand on a comment by Lyne et al. (2017), that intermittent pulsars tend to congregate near a stripe in the logarithmic period versus period-derivative diagram.
Fan Zhang
doaj   +1 more source

The Evolutionary Statuses of Solar Type Detached Eclipsing Binary Stars [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2012
We presented fundamental stellar parameters and evolutionary statuses of six solar type detached eclipsing binaries whose masses are in the range of 0.97-1.43 M⊙. EK Cep and FL Lyr belong to the zero age main sequence.
Chanisa Kanjanascul   +5 more
doaj   +1 more source

Chemistry of the Most Metal-poor Stars in the Bulge and the z > 10 Universe [PDF]

open access: yes, 2014
Metal-poor stars in the Milky Way are local relics of the epoch of the first stars and the first galaxies. However, a low metallicity does not prove that a star formed in this ancient era, as metal-poor stars form over a range of redshift in different ...
Casey, Andrew R., Schlaufman, Kevin C.
core   +2 more sources

NEW VARIABLE STAR IN THE ORION CONSTELLATION

open access: yesOdessa Astronomical Publications, 2017
New variable star with α = 05° 57m22s, δ = +20°15.5' (1950) was discovered with elements JD Max=2436999.28 + 0.2343973 E, range 15.6- 16.2m (pg) and asymmetry M-m=0.26.
I. S. Brjukhanov, V. P. Goranskij
doaj   +1 more source

KMOS view of the Galactic Centre I. Young stars are centrally concentrated [PDF]

open access: yes, 2015
The Galactic centre hosts a crowded, dense nuclear star cluster with a half-light radius of 4 pc. Most of the stars in the Galactic centre are cool late-type stars, but there are also >100 hot early-type stars in the central parsec of the Milky Way ...
de Zeeuw, P. T.   +9 more
core   +3 more sources

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