Results 21 to 30 of about 11,728,534 (352)

Using limb darkening to measure fundamental parameters of stars [PDF]

open access: yes, 2012
Context. Limb darkening is an important tool for understanding stellar atmospheres, but most observations measuring limb darkening assume various parameterizations that yield no significant information about the structure of stellar atmospheres. Aims. We
H. Neilson, J. B. Lester
semanticscholar   +3 more sources

New Limits on Fundamental Weak-Interaction Parameters from SuperallowedβDecay [PDF]

open access: green, 2005
A new critical survey of all world data on superallowed beta decays provides demanding tests of, and tight constraints on, the weak interaction. In confirmation of the conserved vector current (CVC) hypothesis, the vector coupling coupling constant is ...
J. C. Hardy, I.S. Towner
openalex   +6 more sources

Compilation of fundamental parameters of earth

open access: yesSolid Earth Sciences
Earth is a unique planet in the universe characterized by a stable crust and a dynamic internal environment, fostering intelligent life. Studying Earth not only aids in understanding our habitat but also helps uncover mysteries of other celestial bodies.
Sirui Liu, Jianghong Deng
doaj   +2 more sources

The CAMELS Multifield Data Set: Learning the Universe’s Fundamental Parameters with Artificial Intelligence [PDF]

open access: yesAstrophysical Journal Supplement Series, 2021
We present the Cosmology and Astrophysics with Machine Learning Simulations (CAMELS) Multifield Data set (CMD), a collection of hundreds of thousands of 2D maps and 3D grids containing many different properties of cosmic gas, dark matter, and stars from ...
F. Villaescusa-Navarro   +27 more
semanticscholar   +1 more source

Fundamental parameters for 45 open clusters with Gaia DR2, an improved extinction correction and a metallicity gradient prior [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2020
Reliable fundamental parameters of open clusters (OCs) such as distance, age, and extinction are key to our understanding of Galactic structure and stellar evolution.
H. Monteiro   +7 more
semanticscholar   +1 more source

Extracting the fundamental parameters [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2010
10 pages, 6 Figures, Proceedings of "Beyond the Standard Model Physics and LHC Signatures (BSM-LHC)", Boston, June 2-4 ...
Dirk Zerwas   +3 more
openaire   +4 more sources

On the Possibility of Universal Chemometric Calibration in X-ray Fluorescence Spectrometry: Case Study with Ore and Steel Samples

open access: yesApplied Sciences, 2023
The accuracy of X-ray fluorescence spectrometry in quantitative element analysis depends on the particular sample composition (so-called matrix effects). Counteracting these effects requires a large number of calibration samples similar in composition to
Zahars Selivanovs   +2 more
doaj   +1 more source

Atmospheric and Fundamental Parameters of Eight Nearby Multiple Stars

open access: yes, 2022
We present the complete set of atmospheric and fundamental parameters, in addition to the masses, for the individual components of eight stellar systems.
A. M. Hussein   +6 more
semanticscholar   +1 more source

On the Measurement of Fundamental Parameters of White Dwarfs in the Gaia Era [PDF]

open access: yesAstrophysical Journal, 2019
We present a critical review of the determination of fundamental parameters of white dwarfs discovered by the Gaia mission. We first reinterpret color–magnitude and color–color diagrams using photometric and spectroscopic information contained in the ...
P. Bergeron   +7 more
semanticscholar   +1 more source

Revisiting the Fundamental Parameters of 49 New Star Clusters in Gaia DR2

open access: yes, 2021
Reliable fundamental parameters of star clusters such as distance modulus, metallicity, age, extinction, and binary fraction are of key importance for astrophysical studies. Although a lot of new star clusters were identified from the data of, e.g., Gaia
Zhongmu Li, Yangyang Deng, Jing Chen
semanticscholar   +1 more source

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