Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-05-09
Astronomy and Astrophysics
Astrophysics
Note soumise a l'Academie des Sciences, 7 pages, 2 figures, en francais
Scientific paper
The standard interpretation of the extinction curve does not agree with some observations. The light we receive from a reddened star must be contaminated by starlight scattered at very small angular distances from the star. The true extinction curve is a straight line from the near infrared to the far-UV. If so, all interstellar dust models must be questionned. A second conclusion is that the average properties of interstellar grains may be much more uniform than previously thought. -- L'interpretation standard de la courbe d'extinction de la lumiere par la matiere interstellaire n'est pas en accord avec certaines observations. Cela s'explique seulement si la lumiere des etoiles rougies est contaminee par de la lumiere diffusee a tres faible angle de diffusion. La courbe d'extinction exacte est alors une ligne droite du proche infrarouge jusqu'a l'UV lointain. Cela remet en question tous les modeles de poussiere utilises a l'heure actuelle. Il n'y a egalement pas lieu de supposer de variation des proprietes moyennes des grains d'une region de l'espace a l'autre.
No associations
LandOfFree
Les incompatibilites entre la theorie standard de l'extinction interstellaire et l'observation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Les incompatibilites entre la theorie standard de l'extinction interstellaire et l'observation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Les incompatibilites entre la theorie standard de l'extinction interstellaire et l'observation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-4262