Results 31 to 40 of about 202,711 (324)

Selecting a Photometric System for Gaia: C, N, O and Alpha-Process Elements

open access: yesOpen Astronomy, 2003
The sensitivity of stellar spectra to C, N, O and α-process element abundances is discussed with the aim of taking this effect into account when selecting a photometric system for the Gaia orbiting observatory.
Tautvaišienė G.   +2 more
doaj   +1 more source

A ciência geográfica no helenismo: I -As mitografias de Gaia.

open access: yesConfins, 2019
This article aims to discuss the participation of the myth of Gaia in the formation of geographical science in antiquity. For this purpose, Homer´s The Iliad and the Odyssey, the Homeric Hymns, The origin of the world and the gods according Hesiod's ...
Antonio Carlos Vitte   +1 more
doaj   +1 more source

Double stars and astrometric uncertainties in Gaia DR1

open access: yes, 2017
A significant number of double stars with separations up to 2.5 arcsec are present in the Gaia Data Release 1 astrometric catalogs. Limiting our analysis to a well-studied sample of 1124 doubles resolved by Hipparcos, provided with individual Tycho ...
Fabricius, Claus   +2 more
core   +1 more source

My own Passion compositions. Inspirations, texts, composing technique, musical language

open access: yesEdukacja Muzyczna, 2019
This article is devoted to my own Lenten choral and organ music. At first, I introduce my mo- tives for undertaking creative activity, which include, among others, the atmosphere of my family house (my father, Wojciech Łukaszewski, was a composer).
Marcin Tadeusz ŁUKASZEWSKI
doaj   +1 more source

Toward an Earthbound Theology

open access: yesOpen Theology, 2017
This article considers some metaphysical and theological implications of the Anthropocene, which is the proposed name for a new geological epoch that is characterized by massive human disturbances of the Earth system.
Roberts Austin J.
doaj   +1 more source

Gaia's Game

open access: yescommunication +1, 2014
James Lovelock’s vision of Earth as a living cybernetic system is popular again. The surprising new preacher of Gaia is Bruno Latour. He uses the concept to refer to a holistic understanding of Earth, in which mankind is situated as integral part. Gaia becomes the catalyst and fundament for his philosophical attempt to design a new believe-system in ...
openaire   +3 more sources

Star Classification Possibilities with the Gaia Spectrophotometers. II. A Method for Empirical Decontamination of the BP/RP Spectra

open access: yesOpen Astronomy, 2010
The contamination in the Gaia BP and RP spectra, caused by the LSF smearing, is a serious obstacle for the classification of stars since the contamination values at different wavelengths depend on temperatures, gravities, metallicities and interstellar ...
Straižys V.   +2 more
doaj   +1 more source

A compilation of known QSOs for the Gaia mission

open access: yes, 2018
Quasars are essential for astrometric in the sense that they are spatial stationary because of their large distance from the Sun. The European Space Agency (ESA) space astrometric satellite Gaia is scanning the whole sky with unprecedented accuracy up to
Cao, Zi-huang   +3 more
core   +1 more source

Expectations on the mass determination using astrometric microlensing by Gaia

open access: yes, 2020
Context. Astrometric gravitational microlensing can be used to determine the mass of a single star (the lens) with an accuracy of a few percent. To do so, precise measurements of the angular separations between lens and background star with an accuracy ...
Bastian, U., Klüter, J., Wambsganss, J.
core   +1 more source

GAIA Spectroscopy and Radial Velocities [PDF]

open access: yes, 2001
GAIA spectroscopic and radial velocity performancies are reviewed on the base of ground-based test observations and simulations. The prospects for accurate analysis of stellar atmospheres (temperature, gravity, chemical abundances, rotation ...
Munari, Ulisse
core   +3 more sources

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