On the model of dust in the Small Magellanic Cloud
arXiv:astro-ph/9812460 · doi:10.1086/311903
Abstract
We present here dust models for the Small Magellanic Cloud bar calculated for the first time with the regularization approach. A simple mixture of the core-mantle and/or composite grains (mostly made from silicates and organic refractory) together with silicon nanoparticles is consistent with the following: 1) the observed extinction toward AzV 398 (a typical SMC bar sightline), 2) the elemental abundances, and 3) the strength of the interstellar radiation field. We predict the expected albedo and asymmetry parameter of the models, which can be tested in future observations. The proposed dust models can also be tested by looking for the expected extended red emission.
accepted for publication in ApJ Letters, 5 pages, 2 figures (8 Postscript files), latex2e, uses emulateapj.sty (included), multicol.sty, epsf.sty, complete Postscript file is also available at http://physics.technion.ac.il/~zubko/eb.html#SMCDUST1
References in corpus (7)
- Dust in Starburst Galaxies
- Starburst-like Dust Extinction in the Small Magellanic Cloud
- Detection of Extended Red Emisson in the Diffuse Interstellar Medium
- Silicon Nanoparticles: Source of Extended Red Emission?
- Dust in the Small Magellanic Cloud: Interstellar Polarization and Extinction
- Silicon nanoparticles and interstellar extinction
- On the model of dust in the Small Magellanic Cloud
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- Interstellar Grains -- The 75th Anniversary
- Three-Dimensional Structure and Dust Extinction in the Small Magellanic Cloud
- On the model of dust in the Small Magellanic Cloud
- On the Unusual Depletions toward Sk 155, or What Are the Small Magellanic Cloud Dust Grains Made of?
- Probing the infrared counterparts of diffuse far-ultraviolet sources in the Galaxy
- Overview of Grain Models