Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-12-17
Astronomy and Astrophysics
Astrophysics
4 pages, conference proceedings paper, "The Spectral Energy Distribution of Gas-Rich Galaxies: Confronting Models with Data",
Scientific paper
10.1063/1.1913934
We discuss the interpretation of the dust SED from the mid-infrared to the millimeter range of NGC 1569. The model developed by D\'esert et al. (1990) including three dust components (Polyaromatic Hydrocarbons, Very Small Grains and big grains) can explain the data using a realistic interstellar radiation field and adopting an enhanced abundance of VSGs. A simple three-temperature model is also able to reproduce the data but requires a very low dust temperature which is considered to be unlikely in this low-metallicity starburst galaxy. The high abundance of Very Small Grains might be due to large grain destruction in supernova shocks. This possibility is supported by ISO data showing that the emission at 14.3 $\mu$m, tracing VSGs, is enhanced with respect to the emission at 6.7 $\mu$m and 850 $\mu$m in regions of high star formation.
Haas Marcel
Israel Frank P.
Lisenfeld Ute
Sievers Albrecht
Stil Jeroen
No associations
LandOfFree
The dust SED in the dwarf galaxy NGC 1569: Indications for an altered dust composition? 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 The dust SED in the dwarf galaxy NGC 1569: Indications for an altered dust composition?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The dust SED in the dwarf galaxy NGC 1569: Indications for an altered dust composition? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-158830