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High-mass star formation in the Southern Hemisphere sky

hal.structure.identifierDépartement d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée [DAPNIA]
dc.contributor.authorMINIER, Vincent
hal.structure.identifierSwinburne University of Technology (Hawthorn campus)
dc.contributor.authorBURTON, M. G.
hal.structure.identifierAquatic Environment Research Centre
dc.contributor.authorHILL, T.
hal.structure.identifierSwinburne University of Technology (Hawthorn campus)
dc.contributor.authorPURCELL, C. R.
hal.structure.identifierSwinburne University of Technology (Hawthorn campus)
dc.contributor.authorLONGMORE, S.
hal.structure.identifierLaboratoire de Probabilités et Modèles Aléatoires [LPMA]
dc.contributor.authorWALSH, A. J.
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorHERPIN, Fabrice
dc.date.issued2005-01
dc.date.conference2004
dc.description.abstractEnWe report on a multi-wavelength (IR to cm) and multi-resolution (1 mas to 20 arcsec) exploration of high-mass star formation regions in the Galactic plane, at longitudes observable from the Southern Hemisphere. Our source sample was originally identified through methanol masers in the Galactic plane, which exclusively trace high-mass star-forming regions. (Sub)millimetre continuum and molecular line observations were carried out with SEST/SIMBA, JCMT/SCUBA and ATNF/Mopra mm-wave telescopes and have allowed us to identify massive (>20 Msolar) and luminous (>103 Lsolar) clumps in each star-forming region. We have also constrained the SED with additional archival IR data, the physical conditions (Tdust, L, M) and the chemical composition of each massive clump. Several types of objects were characterised based on the Lsubmm/Lbol ratio, the dust temperature and the molecular line properties, ranging from class 0-like YSO clusters (Lsub/Lbol ~ 1%, T = 30K) to hot molecular clumps (Lsub/Lbol ~ 0.1%, T = 40-200K). Preliminary high-angular resolution observations for a subset of the sample with the ATNF/ATCA at 3 mm, the VLA at 15, 22 and 43 GHz and Gemini in MIR have revealed that several (proto)stellar objects are embedded in the massive clumps: massive protostars, hot cores and hyper compact HII regions. We have thus identified protoclusters of massive YSOs, which are the precursors of the OB associations. This sample of Southern Hemisphere star-forming regions will be extremely valuable for the scientific preparation of ALMA and HSO observations.
dc.language.isoen
dc.source.titleProceedings of the dusty and molecular universe: a prelude to Herschel and ALMA, 27-29 October 2004, Paris, France. Ed. by A. Wilson. ESA SP-577, Noordwijk, Netherlands: ESA Publications Division, ISBN 92-9092-855-7, 2005, p. 201 - 204
dc.subject.enStar Formation
dc.subject.enContinuum
dc.subject.enMolecular Lines
dc.title.enHigh-mass star formation in the Southern Hemisphere sky
dc.typeCommunication dans un congrès
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.identifier.arxivastro-ph/0412053
bordeaux.page201-204
bordeaux.volume577
bordeaux.conference.titlea prelude to Herschel and ALMA
bordeaux.countryFR
bordeaux.title.proceedingProceedings of the dusty and molecular universe: a prelude to Herschel and ALMA, 27-29 October 2004, Paris, France. Ed. by A. Wilson. ESA SP-577, Noordwijk, Netherlands: ESA Publications Division, ISBN 92-9092-855-7, 2005, p. 201 - 204
bordeaux.conference.cityParis
bordeaux.peerReviewedoui
hal.identifierhal-00403388
hal.version1
hal.invitednon
hal.proceedingsoui
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00403388v1
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