1. A tridimensional model of the galactic interstellar extinction
- Author
-
Arenou, Frédéric, Grenon, M., Gomez, A., Departement d'Astrophysique Stellaire et Galactique (DASGAL), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Galaxies, Etoiles, Physique, Instrumentation (GEPI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Observatoire Astronomique de l'Université de Genève (ObsGE), and Université de Genève (UNIGE)
- Subjects
Mission Planning ,[SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR] ,Astrophysics::High Energy Astrophysical Phenomena ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Stellar Color ,Astrometry ,Interstellar Extinction ,Astronomical Photometry ,Sky Surveys (Astronomy) ,Astrophysics::Solar and Stellar Astrophysics ,Astrophysics::Earth and Planetary Astrophysics ,[SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA] ,Astronomical Models ,Astrophysics::Galaxy Astrophysics ,Hipparcos Satellite - Abstract
International audience; The distribution of interstellar extinction has been mapped over the whole sky, using all available spectral and photometric data. The color excess distribution is modelled as a function of galactic latitude, longitude and distance within about 1 kpc from the sun. The model was used to predict the reddened Tycho and Johnson (B-V) colors, with the associated accuracy, from HD or MK spectral type and one magnitude (B or V), for stars without photoelectric photometry. This model is of special interest at intermediate and high galactic latitudes where color excesses cannot be obtained from early type stars.
- Published
- 1992