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CoDustMas: Cosmic Dust as a Diagnostic for Massive Stars - prolongation request

English title CoDustMas: Cosmic Dust as a Diagnostic for Massive Stars - prolongation request
Applicant Cherchneff-Parrinello Isabelle
Number 149248
Funding scheme Project funding (Div. I-III)
Research institution Departement Physik Universität Basel
Institution of higher education University of Basel - BS
Main discipline Astronomy, Astrophysics and Space Sciences
Start/End 01.10.2013 - 31.10.2014
Approved amount 124'745.00
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Keywords (8)

supernova; chemical kinetics; supernova remnant; astrochemistry; nucleosynthesis; shocks; dust; molecules

Lay Summary (French)

Lead
Les étoiles massives en évoluant et jusqu’à leur explosion finale sous la forme de supernovae produisent les éléments lourds (fer, silice, souffre). L’explosion d’une supernova représente un environnement énergétique et inhospitalier, mais des molécules comme CO et SiO et de la poussière (carbone amorphe, silicates) ont été détectés un an après l’explosion. Le fait qu’une supernova forme de la poussière a des conséquences importantes sur l’origine de la poussière cosmique après le Big-Bang.
Lay summary

Contenu et objectifs du travail de recherche

Notre principal objectif est de contribuer à une meilleure compréhension des procédées de formation de la poussière et des molécules dans les supernovae. Plus précisément, nous souhaitons (i) identifier la composition chimique des grains formés, (ii) quantifier la masse de poussière produite par une supernova et (iii) étudier l’évolution des molécules et de la poussière dans les rémanents de supernovae qui représentent la phase d’évolution avancée de la supernova. Nous chercherons finalement à estimer la contribution des supernovae dans le budget de la poussière cosmique localement et dans l’univers lointain.

Contexte scientifique et social du projet de recherche

Notre travail générera des informations inédites et essentielles quant a l’étude des supernovae. Ces informations seront testées par des programmes d’observation avec les plus récentes infrastructures astronomiques comme l’interféromètre millimétrique ALMA. Il génèrera également des informations pour un public de non-experts sur la poussière cosmique et l’origine des molécules complexes, un sujet directement lie a l’origine de la vie dans l’univers.

 

Direct link to Lay Summary Last update: 26.09.2013

Responsible applicant and co-applicants

Employees

Publications

Publication
IR and sub-mm fluxes of SN1987A revisited: when moderate dust masses suffice
Sarangi Arkaprabha, Cherchneff Isabelle (2014), IR and sub-mm fluxes of SN1987A revisited: when moderate dust masses suffice, in IAU Symposium 296, Raichak, India.
Molecules and dust in Cassiopeia A. I. Synthesis in the supernova phase and processing by the reverse shock in the clumpy remnant
Biscaro Chiara, Cherchneff Isabelle (2014), Molecules and dust in Cassiopeia A. I. Synthesis in the supernova phase and processing by the reverse shock in the clumpy remnant, in Astronomy & Astrophysics, 564, A25.
Molecules and dust in the ejecta of Type II-P supernovae
Cherchneff Isabelle, Sarangi Arkaprabha (2014), Molecules and dust in the ejecta of Type II-P supernovae, in IAU Symposium 296, Raichak, India.
CO rotational line emission from a dense knot in Cassiopeia A. Evidence for active post-reverse-shock chemistry
Wallstroem Sofia, Biscaro Chiara, Salgado F (2013), CO rotational line emission from a dense knot in Cassiopeia A. Evidence for active post-reverse-shock chemistry, in Astronomy & Astrophysics, 558, L2.
Condensation of dust in supernova ejecta
Sarangi Arkaprabha, Cherchneff Isabelle (2013), Condensation of dust in supernova ejecta, in The Life Cycle of Dust in the Universe: Observations, Theory, and Laboratory Experiments, Tapei, taiwan.
Dust production in Supernovae
Cherchneff Isabelle (2013), Dust production in Supernovae, in PoS publications, 18.
Molecule and dust reprocessing by the reverse shock in the supernova remnant Cas A
Biscaro Chiara, Cherchneff Isabelle (2013), Molecule and dust reprocessing by the reverse shock in the supernova remnant Cas A, in The Life Cycle of Dust in the Universe: Observations, Theory, and Laboratory Experiments , Tapei, Taiwan.
The Chemically Controlled Synthesis of Dust in Type II-P Supernovae
Sarangi Arkaprabha, Cherchneff Isabelle (2013), The Chemically Controlled Synthesis of Dust in Type II-P Supernovae, in The Astrophysical Journal , 776, 107.
Condensation of dust in the ejecta of type II-P supernovae
Sarangi Arkaprabha, Cherchneff Isabelle, Condensation of dust in the ejecta of type II-P supernovae, in Astronomy & Astrophysics, 1.

Collaboration

Group / person Country
Types of collaboration
NASA Goddard Flight Space Center United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
Physics & Astronomy/University of Belfast Great Britain and Northern Ireland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Chemistry/University of Leeds Great Britain and Northern Ireland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Leiden Observatory/University of Leiden Netherlands (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication

Associated projects

Number Title Start Funding scheme
128950 CoDustMas: Cosmic Dust Grains as a Diagnostic for Massive Stars 01.09.2010 Project funding (special)
132616 Dust synthesis in evolved stellar winds: a local diagnostic for the identification of dust providers in the early universe 01.02.2011 Project funding (Div. I-III)
128950 CoDustMas: Cosmic Dust Grains as a Diagnostic for Massive Stars 01.09.2010 Project funding (special)

Abstract

This project is a request for a one-year prolongation of the project 20GN21_128950 related to the Collaborative Research Project CoDustMas, part of the EuroGENESIS programme from the ESF. The project involves a broad study of dust formation and reprocessing in core-collapse supernovae and their remnants, with the objective to determine whether supernovae are dust producers or destroyers in local and far away galaxies. The first part of the project is related to studying the chemistry of core-collapse supernova explosion and ejecta, with a focus on the dust formation process. The objectives are: (1) characterise the molecular component of SN ejecta; (2) identify the physical and chemical processes that drive dust formation; (3) derive dust chemical composition and mass yields for various progenitors; and (4) test the modelled results against most recent observations of supernovae. The second part is related to the evolution of the molecular and dust component of the ejecta in supernova remnants. We study the chemistry of the ejecta gas that is crossed by the reverse shock in the remnant Cas A. The objectives are (1) characterise the ejecta of the Cas A progenitor, (2) assess the survival of molecules and dust in dense clumps, and (3) test the results against the most recent observations of Cas A with Herschel and ALMA. The proposal is disconnected to the newly submitted SNF project 20130331 titled “Forming Dust in Low- an High-Mass Stars”, though complementary in the global context of the new research line on cosmic dust initiated at Basel University in 2009. To achieve our objectives, we ask for a one-year prolongation for each of the two PhD students currently employed under the project 20GN21_128950, equivalent to a total budget of 104 760 CHF for the one-year length of the proposal.
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