Universität zu Köln

Motte, F., Nony, T., Louvet, F., Marsh, K. A., Bontemps, S., Whitworth, A. P., Men'shchikov, A., Nguyen Lu'o'ng, Q., Csengeri, T., Maury, J., Gusdorf, A., Chapillon, E., Konyves, V., Schilke, P., Duarte-Cabral, A., Didelon, P. and Gaudel, M. (2018). The unexpectedly large proportion of high-mass star-forming cores in a Galactic mini-starburst. Nat. Astron., 2 (6). S. 478 - 483. LONDON: NATURE PUBLISHING GROUP. ISSN 2397-3366

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Abstract

Understanding the processes that determine the stellar initial mass function (IMF) is a critical unsolved problem, with profound implications for many areas of astrophysics(1). In molecular clouds, stars are formed in cores-gas condensations sufficiently dense that gravitational collapse converts a large fraction of their mass into a star or small clutch of stars. In nearby star-formation regions, the core mass function (CMF) is strikingly similar to the IMF, suggesting that the shape of the IMF may simply be inherited from the CMF2-5. Here, we present 1.3 mm observations, obtained with the Atacama Large Millimeter/submillimeter Array telescope, of the active star-formation region W43-MM1, which may be more representative of the Galactic-arm regions where most stars form(6,7). The unprecedented resolution of these observations reveals a statistically robust CMF at high masses, with a slope that is markedly shallower than the IMF. This seriously challenges our understanding of the origin of the IMF.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Motte, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nony, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Louvet, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Marsh, K. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bontemps, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Whitworth, A. P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Men'shchikov, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nguyen Lu'o'ng, Q. UNSPECIFIED UNSPECIFIED UNSPECIFIED Csengeri, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Maury, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gusdorf, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Chapillon, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Konyves, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schilke, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Duarte-Cabral, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Didelon, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gaudel, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-183642
DOI:	10.1038/s41550-018-0452-x
Journal or Publication Title:	Nat. Astron.
Volume:	2
Number:	6
Page Range:	S. 478 - 483
Date:	2018
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2397-3366
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language EVOLUTION; W43-MM1; LUMINOSITY; PROTOSTARS; CLUSTERS; PERSEUS; SERPENS; REGION; W43 Multiple languages Astronomy & Astrophysics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/18364