Volume 548, December 2012
|Number of page(s)||6|
|Published online||27 November 2012|
Laboratoire AIM, CEA/IRFU CNRS/INSU Université Paris Diderot,
2 Institut d’Astrophysique Spatiale, CNRS/Université Paris-Sud 11, 91405 Orsay, France
3 Canadian Institute for Theoretical Astrophysics – CITA, University of Toronto, 60 St. George Street, Toronto, Ontario, M5S 3H8, Canada
4 Université de Bordeaux, Bordeaux, LAB, UMR 5804, 33270 Floirac, France
5 CNRS, LAB, UMR 5804, 33270 Floirac, France
6 IAPS – Instituto di Astrofisica e Planetologia Spaziali, via Fosso del Cavaliere 100, 00133 Roma, Italy
7 European Southern Observatory, Karl Schwarzschild Str. 2, 85748 Garching bei Munchen, Germany
Accepted: 30 October 2012
We present APEX/P-ArTéMiS 450 μm continuum observations of RCW 36 and the adjacent ridge, a high-mass high-column density filamentary structure at the centre of the Vela C molecular cloud. These observations, at higher resolution than Herschel/SPIRE camera, reveal clear fragmentation of the central star-forming ridge. Combined with PACS far-infrared and SPIRE sub-millimetre observations from the Herschel HOBYS project we build a high resolution column density map of the region mapped with P-ArTéMiS. We extract the radial density profile of the Vela C ridge which with a ~0.1 pc central width is consistent with that measured for low-mass star-forming filaments in the Herschel Gould Belt survey. Direct comparison with Serpens South, of the Gould Belt Aquila complex, reveals many similarities between the two regions. Despite likely different formation mechanisms and histories, the Vela C ridge and Serpens South filament share common characteristics, including their filament central widths.
Key words: ISM: individual objects: Vela C / ISM: individual objects: RCW 36 / submillimeter: stars / dust, extinction / stars: early-type / stars: protostars
This publication is based on data acquired with the Atacama Pathfinder Experiment (APEX) in ESO program 083.C-0996. APEX is a collaboration between the Max-Planck-Institut für Radioastronomie, the European Southern Observatory, and the Onsala Space Observatory.
Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
Figures 4, 5, and Appendix A are available in electronic form at http://www.aanda.org
© ESO, 2012
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.