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GALACTIC PLANE [4 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2013-01-15

English

Subject field(s)
  • Astronomy
OBS

"Population II stars"... are relatively aged objects of low metal content, i. e. they are mainly hydrogen and perhaps helium, with little or no gas and dust; orbits have a high eccentricity(often outside of the galactic plane).... Examples include the globular star clusters of our own galaxy. These stars are on the average one hundred times less luminous than population I stars. Masses do not exceed 1 1/2 times that of our sun. Ages approach 1010 years.

French

Domaine(s)
  • Astronomie
CONT

Il semble donc exister deux types de populations stellaires : celle des parages solaires, dans la Voie Lactée, que Baade appelle la «population I» et celle des amas globulaires que Baade appelle la «population II» [...]

Spanish

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Record 2 2005-10-26

English

Subject field(s)
  • Electromagnetic Radiation
  • Space Physics
CONT

The COS-B satellite will carry a single large experiment, capable of detecting gamma-rays with energies in excess of 20 MeV in order to study in detail the sources of extraterrestrial gamma radiation. The principal objectives of the study will be to investigate the angular structure of gamma-ray emission from the galactic plane, to measure the flux of the isotropic radiation from high galactic latitudes believed to be of extra-galactic origin, to examine known or postulated point sources of the radiation and to determine the energy spectra of all identified sources.

French

Domaine(s)
  • Rayonnements électromagnétiques
  • Physique spatiale
OBS

extraterrestre : Cette graphie, puisée des Rectifications de l'orthographe recommandées par le Conseil supérieur de la langue française, est attestée dans le Petit Robert (2004).

Spanish

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Record 3 2001-04-01

English

Subject field(s)
  • Astrophysics and Cosmography
  • Astronautics
DEF

The point in the Galactic plane that lies directly opposite the Galactic center.

OBS

Here we gaze toward the edge of the Galactic disk.

French

Domaine(s)
  • Astrophysique et cosmographie
  • Astronautique
Key term(s)
  • anticentre de la galaxie
  • anti-centre galactique

Spanish

Save record 3

Record 4 1977-08-29

English

Subject field(s)
  • Astronomy
OBS

"Population I stars"(...) are relatively youthful units(...) marked by high metal content, accompanied by much gas and dust;(...) The orbits are close to circular, and are distributed at very low inclinations to the galactic plane(...)

French

Domaine(s)
  • Astronomie
OBS

Il semble donc exister deux types de populations stellaires: celle des parages solaires, dans la Voie Lactée, que Baade appelle la "population I" et celle des amas globulaires que Baade appelle la "population II" (...)

Spanish

Save record 4

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