HAL: hal-00523064, version 1

arXiv: 1005.2618

ADS Bibliographic id: 2010A&A...518L.102A

DOI: 10.1051/0004-6361/201014666

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Astronomy and Astrophysics 518 (2010) L102

From filamentary clouds to prestellar cores to the stellar IMF: Initial highlights from the Herschel Gould Belt survey

Ph. André 1, A. Men'shchikov 1, S. Bontemps 2, 3, 4, 5, V. Könyves, F. Motte 6, 7, N. Schneider 1, P. Didelon 1, V. Minier 6, 7, P. Saraceno 8, D. Ward-Thompson 9, J. Di Francesco 10, G. White 11, S. Molinari 8, L. Testi 12, A. Abergel 13, M. Griffin 9, Th. Henning 14, P. Royer 15, 16, B. Merín, R. Vavrek, M. Attard, D. Arzoumanian, C. D. Wilson, P. Ade, H. Aussel 17, J. -P. Baluteau 18, M. Benedettini 19, J. -Ph. Bernard 20, J. A. D. L. Blommaert, L. Cambrésy, P. Cox, A. Di Giorgio, P. Hargrave, M. Hennemann 1, M. Huang 21, J. Kirk 22, O. Krause, R. Launhardt 14, S. Leeks 11, J. Le Pennec, J. Z. Li 21, P. Martin 23, A. Maury 12, G. Olofsson 24, A. Omont 25, N. Peretto 1, S. Pezzuto 8, T. Prusti, H. Roussel 25, D. Russeil 18, M. Sauvage 1, B. Sibthorpe 26, A. Sicilia-Aguilar, L. Spinoglio 27, C. Waelkens, A. Woodcraft 26, A. Zavagno 18, 28

(2010)

We summarize the first results from the Gould Belt survey, obtained toward the Aquila Rift and Polaris Flare regions during the 'science demonstration phase' of Herschel. Our 70-500 micron images taken in parallel mode with the SPIRE and PACS cameras reveal a wealth of filamentary structure, as well as numerous dense cores embedded in the filaments. Between ~ 350 and 500 prestellar cores and ~ 45-60 Class 0 protostars can be identified in the Aquila field, while ~ unbound starless cores and no protostars are observed in the Polaris field. The prestellar core mass function (CMF) derived for the Aquila region bears a strong resemblance to the stellar initial mass function (IMF), already confirming the close connection between the CMF and the IMF with much better statistics than earlier studies. Comparing and contrasting our Herschel results in Aquila and Polaris, we propose an observationally-driven scenario for core formation according to which complex networks of long, thin filaments form first within molecular clouds, and then the densest filaments fragment into a number of prestellar cores via gravitational instability.

1:	Astrophysique Interactions Multi-échelles (AIM)
	CNRS : UMR7158 – INSU – Université Paris VII - Paris Diderot – CEA : DSM/IRFU
2:	Laboratoire d'Astrophysique de Bordeaux (LAB)
	CNRS : UMR5804 – INSU – Université Sciences et Technologies - Bordeaux I
3:	Observatoire aquitain des sciences de l'univers (OASU)
	CNRS : UMS2567 – INSU – Université Sciences et Technologies - Bordeaux I
4:	Université Sciences et Technologies - Bordeaux 1
	Université Sciences et Technologies - Bordeaux I
5:	Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB)
	CNRS : UMR5804 – INSU – Université Sciences et Technologies - Bordeaux I
6:	Laboratoire AIM (AIM)
	CEA – Université Paris VII - Paris Diderot
7:	Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA) (IRFU)
	CEA : DSM/IRFU
8:	Interplanetary Space Physics Institute (IFSI) (IFSI-INAF)
	Interplanetary Space Physics Institute
9:	School of Physics & Astronomy
	Cardiff University
10:	National Research Council of Canada, Herzberg Institute of Astrophysics
	Herzberg Institute of Astrophysics
11:	Rutherford Appleton Laboratory - Didcot (RAL)
	Science & Technologie Facilities Council
12:	European Southern Observatory (ESO)
	ESO
13:	Institut d'astrophysique spatiale (IAS)
	CNRS : UMR8617 – INSU – Université Paris XI - Paris Sud
14:	Max-Planck-Institut für Astronomie
	Max-Planck-Institut
15:	Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE)
	CNRS : UMR8212 – CEA : DSM/LSCE – Université de Versailles Saint-Quentin-en-Yvelines
16:	LEOSPHERE France
	LEOSPHERE
17:	Autres
	AUTRE
18:	Laboratoire d'Astrophysique de Marseille (LAM)
	CNRS : UMR6110 – INSU – Université de Provence - Aix-Marseille I
19:	Laboratoire d'Astrophysique de Grenoble (LAOG)
	CNRS : UMR5571 – OSUG – INSU – Université Joseph Fourier - Grenoble I
20:	Centre d'étude spatiale des rayonnements (CESR)
	CNRS : UMR5187 – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III
21:	National Astronomical Observatories
	Chinese Academy of Sciences
22:	School of Physis & Astronomy
	Cardiff University
23:	CITA
	University of Toronto
24:	Stockholm University
	Stockholm University
25:	Institut d'Astrophysique de Paris (IAP)
	CNRS : UMR7095 – INSU – Université Pierre et Marie Curie [UPMC] - Paris VI
26:	Royal Observatory Edinburgh
	Royal Observatory Edinburgh
27:	Antarctic Research a European Network for Astrophysics (ARENA)
	CEA
28:	Observatoire Astronomique de Marseille Provence (OAMP)
	INSU – Université de Provence - Aix-Marseille I – CNRS : UMR6110

Subject

:

Sciences of the Universe/Astrophysics/Solar and Stellar Astrophysics Physics/Astrophysics/Solar and Stellar Astrophysics

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From: Marie-Paule Pomies <>

Submitted on: Monday, 4 October 2010 12:40:40

Updated on: Monday, 4 October 2010 12:40:40