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Portail > Offres > Offre UMR5274-VALDEL1-033 - chercheur post-doctoral H/F Fragmentation multi-échelle des nuages moléculaires et la formation de jeunes étoiles en amas

post-doctoral researcher M/F Multi-scale fragmentation of molecular clouds and the formation of young stars in clusters

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- Français-- Anglais

Date Limite Candidature : vendredi 5 avril 2024

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Informations générales

Intitulé de l'offre : post-doctoral researcher M/F Multi-scale fragmentation of molecular clouds and the formation of young stars in clusters (H/F)
Référence : UMR5274-VALDEL1-033
Nombre de Postes : 1
Lieu de travail : ST MARTIN D HERES
Date de publication : jeudi 8 février 2024
Type de contrat : CDD Scientifique
Durée du contrat : 6 mois
Date d'embauche prévue : 1 mai 2024
Quotité de travail : Temps complet
Rémunération : between €2905.76 and €4081.77 gross per month
Niveau d'études souhaité : Niveau 8 - (Doctorat)
Expérience souhaitée : 1 à 4 années
Section(s) CN : Solar system and distant universe


Molecular clouds are the preferred regions for the formation of stars, which aggregate in the form of multiple systems and within small stellar groups with a hierarchical spatial distribution. The presence of such stellar systems suggests that they could be assembled by cascade fragmentation of the cloud on a larger scale. In this project, this possibility is explored in order to determine the properties of such stellar systems that would result from such a multi-scale fragmentation process. The aim is therefore to finalise/enhance a multi-scale fragmentation model for interstellar molecular clouds to account for the formation of stars in small groups (stellar clustering/multiplicity) and the stellar mass function. More specifically, the aim is to characterise the fragmentation rate within molecular clouds with stellar multiplicity and the relationship between the mass distribution of dense gas structures and that of protostars.


Based on the multiscale fragmentation model of molecular clouds: - Estimate the impact of the quasi-static collapse hypothesis for local instabilities on the model and on the results for the multiplicity and mass distribution of young stars - Study the implications of the possible presence of a plateau in the fragmentation curve over a range of spatial scales in relation to a gravo-turbulent collapse model.


Expertise in gravo-turbulent theory, graph theory, stochastic physics. Python programming, statistical simulation, random processes. Group work in international consortia. Writing of scientific articles. Collaborative work. Team work.

Contexte de travail

The Grenoble Institute of Planetology and Astrophysics (IPAG) is a joint research unit with a staff of 150, under the supervision of the CNRS and Grenoble Alpes University. Its annual operating budget of €3m comes largely from major research programmes (including the ERC, H2020, ESO, ESA, ANR and CNES). Its research themes are astrophysics, planetary sciences and the development of instrumental projects on terrestrial and space telescopes. IPAG is a member of the Observatoire des Sciences de l'Univers de Grenoble (OSUG) and is part of the university's PAGE research cluster and the CNRS's INSU. https://ipag.osug.fr Supervision: Isabelle Joncour and Estelle Moraux, teacher-researchers in the ODYSSEY team of around thirty people.

Contraintes et risques


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