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Initial highlights of the HOBYS key program, the Herschel imaging survey of OB young stellar objects

Motte, F.; Zavagno, A.; Bontemps, S.; Schneider, N.; Hennemann, M.; Di Francesco, J.; André, Ph.; Saraceno, P.; Griffin, M.; Marston, A.; Ward-Thompson, D.; White, G.; Minier, V.; Men'shchikov, A.; Hill, T.; Abergel, A.; Anderson, L. D.; Aussel, H.; Balog, Z.; Baluteau, J.-P.; Bernard, J.-Ph.; Cox, P.; Csengeri, T.; Deharveng, L.; Didelon, P.; di Giorgio, A.-M.; Hargrave, P.; Huang, M.; Kirk, J.; Leeks, S.; Li, J. Z.; Martin, P.; Molinari, S.; Nguyen-Luong, Q.; Olofsson, G.; Persi, P.; Peretto, N.; Pezzuto, S.; Roussel, H.; Russeil, D.; Sadavoy, S.; Sauvage, M.; Sibthorpe, B.; Spinoglio, L.; Testi, L.; Teyssier, D.; Vavrek, R.; Wilson, C. D. and Woodcraft, A. (2010). Initial highlights of the HOBYS key program, the Herschel imaging survey of OB young stellar objects. Astronomy and Astrophysics, 518 L77/1-L77/6.

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We present the initial highlights of the HOBYS key program, which are based on Herschel images of the Rosette molecular complex and maps of the RCW120 H II region. Using both SPIRE at 250/350/500 ?m and PACS at 70/160 ?m or 100/160 ?m, the HOBYS survey provides an unbiased and complete census of intermediate- to high-mass young stellar objects, some of which are not detected by Spitzer. Key core properties, such as bolometric luminosity and mass (as derived from spectral energy distributions), are used to constrain their evolutionary stages. We identify a handful of high-mass prestellar cores and show that their lifetimes could be shorter in the Rosette molecular complex than in nearby low-mass star-forming regions. We also quantify the impact of expanding H II regions on the star formation process acting in both Rosette and RCW 120.

Item Type: Journal Article
Copyright Holders: 2010 ESO
ISSN: 1432-0746
Keywords: star formation; telescopes; protostars; dust; extinction
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 25304
Depositing User: Ann McAloon
Date Deposited: 10 Dec 2010 10:26
Last Modified: 18 Nov 2012 17:49
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