PAHS

The Role of Large Polycyclic Aromatic Hydrocarbon molecules in the Universe

 Coordinatore UNIVERSITEIT LEIDEN 

Spiacenti, non ci sono informazioni su questo coordinatore. Contattare Fabio per maggiori infomrazioni, grazie.

 Nazionalità Coordinatore Netherlands [NL]
 Totale costo 2˙383˙980 €
 EC contributo 2˙383˙980 €
 Programma FP7-IDEAS-ERC
Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
 Code Call ERC-2009-AdG
 Funding Scheme ERC-AG
 Anno di inizio 2010
 Periodo (anno-mese-giorno) 2010-05-01   -   2015-04-30

 Partecipanti

# participant  country  role  EC contrib. [€] 
1    UNIVERSITEIT LEIDEN

 Organization address address: RAPENBURG 70
city: LEIDEN
postcode: 2300 RA

contact info
Titolo: Mr.
Nome: Tonnis
Cognome: Brouwer
Email: send email
Telefono: 31715273149
Fax: 31715275269

NL (LEIDEN) hostInstitution 2˙383˙980.00
2    UNIVERSITEIT LEIDEN

 Organization address address: RAPENBURG 70
city: LEIDEN
postcode: 2300 RA

contact info
Titolo: Prof.
Nome: Alexander Godfried Gerardus Maria
Cognome: Tielens
Email: send email
Telefono: -5278505
Fax: -5275783

NL (LEIDEN) hostInstitution 2˙383˙980.00

Mappa


 Word cloud

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pahs    medium    theoretical    universe    interstellar    spectral    species    emission    pah    molecules    evolution    ir    us    experimental    variations    laboratory    physical    observational    chemical   

 Obiettivo del progetto (Objective)

'Strong emission features dominate the IR spectra of the interstellar medium of the Milky Way, galaxies in the local Universe and out to redshifts of ~3. These features are generally attributed to IR fluorescence of large Polycyclic Aromatic Hydrocarbon (PAH) molecules pumped by UV photons. These species must be abundant, ubiquitous, and an important component of the ISM. However, despite extensive experimental and theoretical efforts, no specific PAH or even classes of PAHs have been unambiguously identified. Hence, we do not really know the intrinsic physical and chemical properties of these species and therefore cannot quantify their role in the Universe. I propose a highly interdisciplinary program combining observational, theoretical, and experimental studies to determine the IR emission characteristics of large PAH molecules, their origin and evolution, and their influence on the Universe around us. The proposed program will analyze interstellar PAH spectral maps obtained with Spitzer and ISO and relate the spatial variations in the spectral diversity to variations in the characteristics of the radiation field and the physical conditions of these regions that will be obtained with Herschel. This observational program will be aided by an innovative laboratory program that will measure the IR characteristics of large, astrophysically relevant PAH molecules in the gas phase and by a modelling program of the emission characteristics of these PAHs in space. In addition, the photochemistry of gaseous PAHs will be studied in the laboratory using novel techniques, allowing us to model the chemical evolution of PAHs and their reaction products in the interstellar medium. In this way, key astronomical questions involving interstellar PAHs can be addressed.'

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