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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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Meixner, Margaret
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2013The Detection of C60 in the Well-characterized Planetary Nebula M1-11citations
- 2011The effects of dust on the optical and infrared evolution of SN 2004etcitations
- 2011The mass-loss return from evolved stars to the Large Magellanic Cloud. V. The GRAMS carbon-star model gridcitations
- 2010The destruction and survival of dust in the shell around SN2008Scitations
- 2009Dust Production and Mass Loss in the Galactic Globular Cluster NGC 362citations
- 2006Spitzer SAGE Survey of the Large Magellanic Cloud: Project Overview
- 2006Modelling Evolved Stars Detected by the Spitzer LMC Survey (SAGE)
- 2005The Dust Condensation Sequence at Low Metallicity: AGB Stars in NGC 6822
- 2005The Dust Condensation Sequence at Low Metallicity: AGB Stars in NGC 6822
- 2005The Dust Condensation Sequence at Low Metallicity: AGB Stars in NGC 6822
- 2005Radiative Transfer Modeling of the Extended Dust Shell of AFGL 618
- 2004The O-rich condensation sequence at low metallicity: Large Magellanic Cloud AGB and post-AGB stars
Places of action
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article
The effects of dust on the optical and infrared evolution of SN 2004et
Abstract
We present an analysis of multi-epoch observations of the Type II-P supernova SN 2004et. New and archival optical spectra of SN 2004et are used to study the evolution of the Hα and [O I] 6300-Å line profiles between days 259 and 646. Mid-infrared imaging with Michelle on Gemini-North and with all three instruments of the Spitzer Space Telescope was carried out between 2004 and 2010, supplemented by archival Spitzer data. We include Spitzer'warm' mission photometry at 3.6 and 4.5 μm obtained on days 1779, 1931 and 2151, along with ground-based and Hubble Space Telescope (HST) optical and near-infrared observations obtained between days 79 and 1803. Multiwavelength light curves are presented, as well as optical-infrared spectral energy distributions (SEDs) for multiple epochs. Starting from about day 300, the optical light curves provide evidence for an increasing amount of circumstellar extinction attributable to newly formed dust, with the additional extinction reaching 0.8-1.5 mag in the V band by day 690. The overall SEDs were fitted with multiple blackbody components, in order to investigate the luminosity evolution of the supernova, and then with Monte Carlo radiative transfer models using smooth or clumpy dust distributions, in order to estimate how much new dust condensed in the ejecta. The luminosity evolution was consistent with the decay of <SUP>56</SUP>Co in the ejecta up until about day 690, after which an additional emission source is required, in agreement with the findings of Kotak et al. Clumped dust density distributions consisting of 20 per cent amorphous carbons and 80 per cent silicates by mass were able to match the observed optical and infrared SEDs, with dust masses that increased from 8 × 10<SUP>-5</SUP> M<SUB>⊙</SUB> on day 300 to 1.5 × 10<SUP>-3</SUP> M<SUB>⊙</SUB> on day 690, still significantly lower than the values needed for core-collapse supernovae to make a significant contribution to the dust enrichment of galaxies....