Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sf2a.conf..405m&link_type=abstract
SF2A-2005: Semaine de l'Astrophysique Francaise, meeting held in Strasbourg, France, June 27 - July 1, 2005, Edited by F. Casoli
Astronomy and Astrophysics
Astrophysics
Scientific paper
High-mass stars form in closely-packed protoclusters that are mainly located in large star-forming complexes within the Galactic plane. The very early phases of these massive protoclusters can be detected in cold dust emission. Recent observations at (sub)millimetre wavelengths have confirmed this view, but the lack of angular resolution has precluded the determination of the individual protostar luminosity and mass. Observations in the infrared with large telescopes (e.g. VLT/VISIR) can provide enough angular resolution to separate individual protostars. However, IR emission is not the first signpost of a star birth, but rather traces a more evolved phase of (proto)star formation. Interferometer observations of dust continuum emission and molecular lines can unveil the nature of a few objects in a given region, but are limited by their field of view and cannot provide statistical data on a complete high-mass star formation complex. There is thus a clear need for a new generation of instruments in the submillimetre that will allow to take a complete census of massive pre- and protostellar objects in a large complex and measure their luminosity and mass. We present recent observations of massive protoclusters at high angular resolution as well as a project of a large-format bolometer camera at submillimetre wavelengths that will allow wide-field surveys in the quest for high-mass pre- and protostellar cores.
André Ph.
Minier Vincent
Motte Frederique
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