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 Science programs

Science programmes

Programs linked to Herschel: HOBYS, HI-GAL, Cold cores, ISM, Gould Belt, PRISMAS

  • HOBYS (PIs: Motte, Zavagno, Bontemps): a GT KP dedicated to an unbiased survey with the PACS and SPIRE instruments of nearby (d<3kpc) molecular clouds known to form actively massive stars. This program also includes PACS pointed observations (in imaging and spectroscopy) of Galactic H II regions known to trigger the formation of massive stars on their borders.
  • ISM (PIs: Abergel, Zavagno): a GT KP dedicated to the ecology of the Galactic Interstellar Medium, ranging for the diffuse to the densest parts, in imaging and spectroscopy using the PACS and SPIRE instruments. This program contains a part dedicated to the study of Galactic H II regions known to trigger the formation of massive stars on their borders.
  • Gould Belt (PIs: André, Saraceno): this GT KP is dedicated to a study of the star formation in the Gould Belt. Our group is responsible for the analysis of one region (AFGL 5146) in this survey where triggered star formation is known to occur.
  • Hi-GAL (PI: Molinari): This OT KP is a survey of the Galactic Plane with the PACS and SPIRE instrument. AZ is leading a working group in this program dedicated to the Global Star formation in our Galaxy. This program will be particularly important to reinforce and extend the conclusions derived on the importance of triggered star formation in our Galaxy.
  • Cold Cores (PIs: Juvela, Ristorcelli): This OT KP is dedicated to the study of the very earliest phase of star formation. The main aim is to understand how the interstellar matter condenses to form the cold condensations that will then give rise to star formation. This KP is a follow-up, in imaging with the PACS and SPIRE instrument, of the cold cores that will be detected by the Planck satellite as part of the Planck science Galactic GT core program. The properties of these cold cores is still poorly known and the unprecedent resolution and sensitivity of the Herschel mission should bring much in this research field closely linked to the study of the Galactic Interstellar Medium and Star formation.
  • PRISMAS (PI : M. Gérin) is a Guaranteed Time Key Programme making use of the very high resolution of HIFI to study molecules in the diffuse interstellar medium with absorption lines. 25 basic molécules, which are the building bricks of interstellar chemistry are studied in an unprecedented manner and bring new insights in astrochemistry in general.

MALT90 (PI: J. Jackson): A large program with MOPRA (Autralian radio-telescope) dedicated to determine (via the observation of numerous molecular lines) the physical conditions in 3000 dense condensations detected with the ATLASGAL survey at 870 microns.

Study of the local interstellar medium ( 100 pc from the Sun) with in particular a programme (PI : CG) to clarify the physical mechanisms responsible for the presence of highly ionised atoms like OVI and CIV in the diffuse ISM.
Study of individual HII regions

Instrumental Projets

EMIR (responsible scientifique : C. Gry) EMIR is a near-infrared multi-objects spectrograph for the GranTeCan telescope (La Palma, Espagne). CG is project scientist of the LAM team in charge of the dispersive elements (made of 3 grisms). This opens access of the guaranteed time to our team, with a programme to investigate young clusters containing massive stars, within the framework of our team’s multi-wavelengths studies of particular stellar formation regions.
J.-P. Baluteau: Herschel SPIRE Project Scientist and SPIRE ICC activities.

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