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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.

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

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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