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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 742845.0, MPI für Astronomie / Publikationen_mpia
CORE: fragmentation and disk formation in high-mass star formation . An IRAM NOEMA large program
Authors:Beuther, H.; Ahmadi, A.; Mottram, J.; Bosco, F.; Linz, H.; Klaassen, P.
Date of Publication (YYYY-MM-DD):2017
Title of Journal:Memorie della Societa Astronomica Italiana
Volume:88
Start Page:584
End Page:586
Audience:Not Specified
Abstract / Description:Fragmentation, disk formation, outflow and chemical processes lie at the heart of understanding high-mass star formation. We present an IRAM NOEMA (Northern Extended Millimeter Array) large program addressing these questions using high-spatial-resolution observations (0.3''-0.4'') at 1.3 mm in both line and continuum emission. After introducing the survey outline and goals, initial results from the dust continuum data about the fragmentation processes are presented. A dichotomy of structures is found, varying from regions dominated by a single high-mass fragments to highly fragmented regions with up to 20 sub-structures. Core separations derived with a minimum-spanning-tree analysis are roughly consistent with thermal Jeans fragmentation, and the influences of turbulence, magnetic field and initial density structure are discussed.
Free Keywords:Stars: formation; Stars: massive; Stars: rotation
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0037-8720
URL:http://adsabs.harvard.edu/abs/2017MmSAI..88..584B
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