HAL: hal-00523476, version 1

arXiv: 1005.2634

ADS Bibliographic id: 2010A&A...518L..85B

DOI: 10.1051/0004-6361/201014661

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Astronomy and Astrophysics 518 (2010) L85

The Herschel first look at protostars in the Aquila Rift

S. Bontemps 1, 2, 3, 4, Ph. Andre 5, V. Konyves, A. Men'shchikov 5, N. Schneider 5, A. Maury 6, N. Peretto 5, D. Arzoumanian, M. Attard, F. Motte 7, 8, V. Minier 7, 8, P. Didelon 5, P. Saraceno 9, A. Abergel 10, J. -P. Baluteau 11, J. -Ph. Bernard 12, L. Cambresy, P. Cox, J. Di Francesco 13, A. M. Di Giorgo, M. Griffin 14, P. Hargrave, M. Huang 15, J. Kirk 16, J. Li 17, P. Martin 18, B. Merin, S. Molinari 9, G. Olofsson 19, S. Pezzuto 9, T. Prusti, H. Roussel 20, D. Russeil 11, M. Sauvage 5, B. Sibthorpe 21, L. Spinoglio 22, L. Testi 6, R. Vavrek, D. Ward-Thompson 14, G. White 23, C. Wilson 24, A. Woodcraft 21, A. Zavagno 11, 25

(2010)

As part of the science demonstration phase of the Herschel mission of the Gould Belt Key Program, the Aquila Rift molecular complex has been observed. The complete ~ 3.3deg x 3.3deg imaging with SPIRE 250/350/500 micron and PACS 70/160 micron allows a deep investigation of embedded protostellar phases, probing of the dust emission from warm inner regions at 70 and 160 micron to the bulk of the cold envelopes between 250 and 500 micron. We used a systematic detection technique operating simultaneously on all Herschel bands to build a sample of protostars. Spectral energy distributions are derived to measure luminosities and envelope masses, and to place the protostars in an M_env - L_bol evolutionary diagram. The spatial distribution of protostars indicates three star-forming sites in Aquila, with W40/Sh2-64 HII region by far the richest. Most of the detected protostars are newly discovered. For a reduced area around the Serpens South cluster, we could compare the Herschel census of protostars with Spitzer results. The Herschel protostars are younger than in Spitzer with 7 Class 0 YSOs newly revealed by Herschel. For the entire Aquila field, we find a total of ~ 45-60 Class 0 YSOs discovered by Herschel. This confirms the global statistics of several hundred Class~0 YSOs that should be found in the whole Gould Belt survey.

1:	Laboratoire d'Astrophysique de Bordeaux (LAB)
	CNRS : UMR5804 – INSU – Université Sciences et Technologies - Bordeaux I
2:	Observatoire aquitain des sciences de l'univers (OASU)
	CNRS : UMS2567 – INSU – Université Sciences et Technologies - Bordeaux I
3:	Université Sciences et Technologies - Bordeaux 1
	Université Sciences et Technologies - Bordeaux I
4:	Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB)
	CNRS : UMR5804 – INSU – Université Sciences et Technologies - Bordeaux I
5:	Astrophysique Interactions Multi-échelles (AIM)
	CNRS : UMR7158 – INSU – Université Paris VII - Paris Diderot – CEA : DSM/IRFU
6:	European Southern Observatory (ESO)
	ESO
7:	Laboratoire AIM (AIM)
	CEA – Université Paris VII - Paris Diderot
8:	Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA) (IRFU)
	CEA : DSM/IRFU
9:	Interplanetary Space Physics Institute (IFSI) (IFSI-INAF)
	Interplanetary Space Physics Institute
10:	Institut d'astrophysique spatiale (IAS)
	CNRS : UMR8617 – INSU – Université Paris XI - Paris Sud
11:	Laboratoire d'Astrophysique de Marseille (LAM)
	CNRS : UMR6110 – INSU – Université de Provence - Aix-Marseille I
12:	Centre d'étude spatiale des rayonnements (CESR)
	CNRS : UMR5187 – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III
13:	National Research Council of Canada, Herzberg Institute of Astrophysics
	Herzberg Institute of Astrophysics
14:	School of Physics & Astronomy
	Cardiff University
15:	National Astronomical Observatories
	Chinese Academy of Sciences
16:	School of Physis & Astronomy
	Cardiff University
17:	Photochimie moléculaire et macromoléculaire (PMM)
	CNRS : UMR6505 – Université Blaise Pascal - Clermont-Ferrand II
18:	CITA
	University of Toronto
19:	Stockholm University
	Stockholm University
20:	Institut d'Astrophysique de Paris (IAP)
	CNRS : UMR7095 – INSU – Université Pierre et Marie Curie [UPMC] - Paris VI
21:	Royal Observatory Edinburgh
	Royal Observatory Edinburgh
22:	Antarctic Research a European Network for Astrophysics (ARENA)
	CEA
23:	Rutherford Appleton Laboratory - Didcot (RAL)
	Science & Technologie Facilities Council
24:	University of Exeter
	University of Nottingham
25:	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: Tuesday, 5 October 2010 13:11:37

Updated on: Tuesday, 5 October 2010 13:11:37