Dust in the dwarf galaxy NGC 1569: Evidence for an enhancement of small grains

Authors
Lisenfeld, U Sievers, A Israel, F Stil, J
Citation
U. Lisenfeld et al., Dust in the dwarf galaxy NGC 1569: Evidence for an enhancement of small grains, ASTRO SP SC, 277, 2001, pp. 105-105
Citations number
3
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICS AND SPACE SCIENCE
ISSN journal
0004640X → ACNP
Volume
277
Year of publication
2001
Supplement
1
Pages
105 - 105
Database
ISI
SICI code
0004-640X(2001)277:<105:DITDGN>2.0.ZU;2-R
Abstract
We have mapped the dwarf galaxy NGC 1569 at 1.2 mm with the MPIfR bolometer at the IRAM 30m telescope. The total flux density allows us, together with the IRAS fluxes densities at 12, 25, 60 and 100 mum, to draw conclusions a bout the dust properties and to estimate the total dust mass. We find stron g evidence for a significant enhancement of very small grains and a depleti on of PAHs.