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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Dwek, Eli
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2021The infrared echo of SN2010jl and its implications for shock breakout characteristics
- 2016Dust destruction by the reverse shock in the Cassiopeia A supernova remnantcitations
- 2015The Evolution of Dust Mass in the Ejecta of SN1987Acitations
- 2013The Importance of Physical Models for Deriving Dust Masses and Grain Size Distributions in Supernova Ejecta. I. Radiatively Heated Dust in the Crab Nebulacitations
- 2012Properties and Spatial Distribution of Dust Emission in the Crab Nebulacitations
- 2010The Chemistry of Population III Supernova Ejecta. II. The Nucleation of Molecular Clusters as a Diagnostic for Dust in the Early Universecitations
- 2004The Detection of Cold Dust in Cassiopeia A: Evidence for the Formation of Metallic Needles in the Ejectacitations
- 2004Interstellar Dust Models Consistent with Extinction, Emission, and Abundance Constraintscitations
- 2003Interstellar Dust Models Consistent with Extinction, Emission, and Abundance Constraints
- 2002The Zodiacal Emission Spectrum as Determined by COBE and Its Implicationscitations
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article
The Evolution of Dust Mass in the Ejecta of SN1987A
Abstract
We present a new analysis of the infrared (IR) emission from the ejecta of SN 1987A covering days 615, 775, 1144, 8515, and 9090 after the explosion. We show that the observations are consistent with the rapid formation of about 0.4 {M}<SUB>☉ </SUB> of dust, consisting of mostly silicates (MgSiO<SUB>3</SUB>), near day 615, and evolving to about 0.45 {M}<SUB>☉ </SUB> of composite dust grains consisting of ̃0.4 {M}<SUB>☉ </SUB> of silicates and ̃0.05 {M}<SUB>☉ </SUB> of amorphous carbon after day ̃8500. The proposed scenario challenges previous claims that dust in supernova (SN) ejecta is predominantly carbon, and that it grew from an initial mass of ̃10<SUP>-3</SUP> {M}<SUB>☉ </SUB>, to over 0.5 {M}<SUB>☉ </SUB> by cold accretion. It alleviates several problems with previous interpretations of the data: (1) it reconciles the abundances of silicon, magnesium, and carbon with the upper limits imposed by nucleosynthesis calculations, (2) it eliminates the requirement that most of the dust observed around day 9000 grew by cold accretion onto the ̃10<SUP>-3</SUP> {M}<SUB>☉ </SUB> of dust previously inferred for days 615 and 775 after the explosion, and (3) establishes the dominance of silicate over carbon dust in the SN ejecta. At early epochs, the IR luminosity of the dust is powered by the radioactive decay of <SUP>56</SUP>Co, and at late times by at least (1.3-1.6) × 10<SUP>-4</SUP> {M}<SUB>☉ </SUB> of <SUP>44</SUP>Ti.