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Modelling of dust formation and chemistry in AGB outflows and disks

Total Cost €


EC-Contrib. €






 ICEDRAGON project word cloud

Explore the words cloud of the ICEDRAGON project. It provides you a very rough idea of what is the project "ICEDRAGON" about.

puzzles    seeds    asymptotic    material    interdisciplinary    gas    disks    feedback    chemical    interstellar    grains    delivered    medium    time    grows    layers    planet    model    giant    composition    therein    thought    planets    gaseous    despite    nucleation    inner    solar    decades    forming    identification    circumstellar    fundamentally    secondary    generation    stars    agb    extended    encoded    protoplanetary    connect    mechanism    envelope    enrichment    viability    outer    expertise    stellar    answers    structure    first    fresh    enrich    solving    astrochemical    dust    unknown    physics    star    evolution    launching    deduce    branch    ism    organic    reactions    lose    close    ideal    synergy    twilight    outflow    observations    icedragon    host    limiting    combines    revealed    link    sophisticated    outflows    models    forms    gains    drives    respective    wind    disk    ice    couple    refractory    chemistry    cse    fellow   

Project "ICEDRAGON" data sheet

The following table provides information about the project.


Organization address
city: LEEDS
postcode: LS2 9JT

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country United Kingdom [UK]
 Total cost 212˙933 €
 EC max contribution 212˙933 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2019
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2020
 Duration (year-month-day) from 2020-11-01   to  2022-10-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITY OF LEEDS UK (LEEDS) coordinator 212˙933.00


 Project objective

In their twilight years, solar-like stars in the asymptotic giant branch (AGB) phase enrich the interstellar medium (ISM) with fresh material (gas and dust) for new stars and planets. AGB stars lose their outer layers to the ISM through a stellar outflow or wind, forming an extended circumstellar envelope (CSE). The wind is thought to be dust-driven, with dust grains forming close to the star. State-of-the-art observations have revealed the composition of the inner CSE, allowing the first identification of gas-phase seeds for dust grains, and the presence of disks around AGB stars. Despite major knowledge gains over the past three decades, it is still not fully understood how dust forms, grows, and drives the stellar wind, limiting our understanding of both stellar evolution and the chemical enrichment of the ISM. Moreover, the structure and chemistry of AGB disks is unknown; if similar to protoplanetary disks, second generation planet formation may be possible therein.

Solving these puzzles requires new and sophisticated models that connect dust formation with chemistry and couple gas and dust chemistry throughout the wind and in the disk. With ‘ICE and Dust Reactions in AGB Gaseous Outflows and disks with Nucleation’ (ICEDRAGON), we will develop the first models that link the chemistry throughout the whole CSE and the first chemical model of an AGB disk. The novel models will allow us to study, for the first time, the organic refractory feedback of dust grains delivered to the ISM and the role of dust formation on the gas-phase chemistry throughout the CSE. This is necessary to deduce the physics behind the wind launching mechanism, that is encoded in the observed composition. The AGB disk model will provide the first answers to the viability of secondary planet formation. The synergy between fellow and host is ideal for this astrochemical (and fundamentally interdisciplinary) project, as it combines their respective expertise in chemical modelling.

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The information about "ICEDRAGON" are provided by the European Opendata Portal: CORDIS opendata.

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