Results 11 to 20 of about 221,645 (319)

Measuring chandler wobble amplitude variations using IERS EOP C04 data [PDF]

open access: yesSerbian Astronomical Journal, 2023
We analyzed the Earth's long-term polar motion using the time series IERS EOP C04 (International Earth Rotation and Reference Systems Service - IERS; Earth Orientation Parameters - EOP; Combination of four (04) techniques - C04), from 1984 to ...
Damljanović G., Vasilić V.
doaj   +1 more source

Astrometric star catalogues as combination of Hipparcos/Tycho catalogues with ground-based observations [PDF]

open access: yesSerbian Astronomical Journal, 2004
The successful ESA mission Hipparcos provided very precise parallaxes positions and proper motions of many stars in optical wavelength. Therefore it is a primary representation of International Celestial Reference System in this wavelength.
Vondrák J.
doaj   +1 more source

Crossmatching of high-proper motion L, T, and Y brown dwarfs with large photometric surveys

open access: yesOpen Astronomy, 2023
L, T, and Y brown dwarf (BD) exploration is a topical issue. First, the transition boundary between planets and BDs is not fully understood yet. Second, there is a phenomenon called the L/T-transition.
Avdeeva Aleksandra S.   +2 more
doaj   +1 more source

Two new catalogs of blazar candidates in the WISE infrared sky [PDF]

open access: yes, 2019
We present two catalogs of radio-loud candidate blazars whose WISE mid-infrared colors are selected to be consistent with the colors of confirmed gamma-ray emitting blazars.
Campana, Riccardo   +11 more
core   +2 more sources

Milton, Anon e prosódia na "Trilogia dos Gigantes" [PDF]

open access: yesPessoa Plural, 2021
Neste contributo investigam-se possíveis referências do projecto pessoano póstumo intitulado “Trilogia dos Gigantes” a partir da Biblioteca Particular de Fernando Pessoa – apresentam-se títulos que se debruçam sobre a mitologia grega e os Gigantes em ...
Filipe, Teresa, Ferrari, Patricio
doaj   +1 more source

CoMaLit III. Literature Catalogs of weak Lensing Clusters of galaxies (LC^2) [PDF]

open access: yes, 2015
The measurement of the mass of clusters of galaxies is crucial for their use in cosmology and astrophysics. Masses can be efficiently determined with weak lensing (WL) analyses. I compiled Literature Catalogs of weak Lensing Clusters (LC$^2$).
Sereno, Mauro
core   +3 more sources

The Future of Astrometry in Space

open access: yesFrontiers in Astronomy and Space Sciences, 2018
This contribution focuses on the importance of astrometry and on its future developments. Over the centuries astrometry has greatly contributed to the advance of the knowledge of the Universe.
Antonella Vallenari
doaj   +1 more source

Deep u*- and g-band Imaging of the Spitzer Space Telescope First Look Survey Field : Observations and Source Catalogs [PDF]

open access: yes, 2006
We present deep u*-, and g-band images taken with the MegaCam on the 3.6 m Canada-France-Hawaii Telescope (CFHT) to support the extragalactic component of the Spitzer First Look Survey (hereafter, FLS).
Dario Fadda   +7 more
core   +3 more sources

Russian Virtual Observatory: Data Sources

open access: yesOpen Astronomy, 2016
The purpose of this review is to analyze main directions of creation and functioning of major data sources developed by Russian astronomers or with their participation and to compare them with the worldwide trends in these fields. We discuss astronomical
Malkov O.   +12 more
doaj   +1 more source

PROLAMINS OF WHEAT GRAIN – FROM BIOCHEMISTRY TO GENETICS AND BREEDING

open access: yesЗерновое хозяйство России, 2019
The paper describes the stages of studying the biochemical heterogeneity of gluten proteins of wheat grain as an important factor in the baking quality of flour. It has been shown that the biochemical heterogeneity of gluten proteins is caused by genetic
M. M. Kopus   +2 more
doaj   +1 more source

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