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Massive cold cloud clusters

Published online by Cambridge University Press:  31 March 2017

L. Viktor Toth ,
Sarolta Zahorecz ,
Gabor Marton ,
Isabelle Ristorcelli ,
Mika Juvela ,
Ludovic Montier  and
Jean-Philippe Bernard
L. Viktor Toth
Affiliation:
Loránd Eötvös University, Pázmány P.s. 1/a, H-1117 Budapest, Hungary
Sarolta Zahorecz
Affiliation:
Loránd Eötvös University, Pázmány P.s. 1/a, H-1117 Budapest, Hungary ESO, Karl-Schwarzschild-Str. 2, D-85748 Garching bei München, Germany email: [email protected]
Gabor Marton
Affiliation:
Konkoly Observatory, H-1525 Budapest, PO Box 67, Hungary
Isabelle Ristorcelli
Affiliation:
CNRS, IRAP, 9 Av. colonel Roche, BP 44346, 31028 Toulouse Cedex 4, France Universite de Toulouse, UPS-OMP, IRAP, 31028 Toulouse Cedex 4, France
Mika Juvela
Affiliation:
Department of Physics, PO Box 64, 00014, University of Helsinki, Finland
Ludovic Montier
Affiliation:
CNRS, IRAP, 9 Av. colonel Roche, BP 44346, 31028 Toulouse Cedex 4, France Universite de Toulouse, UPS-OMP, IRAP, 31028 Toulouse Cedex 4, France
Jean-Philippe Bernard
Affiliation:
CNRS, IRAP, 9 Av. colonel Roche, BP 44346, 31028 Toulouse Cedex 4, France Universite de Toulouse, UPS-OMP, IRAP, 31028 Toulouse Cedex 4, France
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Abstract

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The all-sky Planck catalogue of Galactic Cold Clumps (PGCC) allows an almost unbiased study of the early phases of star-formation in our Galaxy. Several thousand of the clumps have also distance estimates allowing a determination of mass and density. The nature of Planck cold clumps varies from IRDCs to tiny nearby cold clouds with masses ranging from one to several tens of thousands solar masses. Some of the clumps are embedded in GMCs, others are isolated. Some are close or even very close to OB associations, while others lay far from any UV luminous objects. The small scale clustering of nearby PGCCs was studied with the improved Minimum Spanning Tree (MST) method identifying groups in 3D space, locating also massive cold cloud clusters eg. PGCCMST G210.6-19.5 in LDN 1641.

Keywords

ISM: cloudsISM: individual LDN 1641, Orion AISM: magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S316: Formation, evolution, and survival of massive star clusters , August 2015 , pp. 133 - 134
Copyright
Copyright © International Astronomical Union 2017 

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