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

TitreInitial highlights of the HOBYS key program, the Herschel imaging survey of OB young stellar objects
Type de publicationJournal Article
Year of Publication2010
AuteursMotte, F, Zavagno, A, Bontemps, S, Schneider, N, Hennemann, M, Di Francesco, J, Andre, P, Saraceno, P, Griffin, M, Marston, A, Ward-Thompson, D, White, G, Minier, V, Men'shchikov, A, Hill, T, Abergel, A, Anderson, LD, Aussel, H, Balog, Z, Baluteau, JP, Bernard, JP, Cox, P, Csengeri, T, Deharveng, L, Didelon, P, di Giorgio, AM, Hargrave, P, Huang, M, Kirk, J, Leeks, S, Li, JZ, 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, CD, Woodcraft, A
JournalAstronomy & Astrophysics
Volume518
Date PublishedJul-Aug
ISBN Number0004-6361
Numéro d'accèsWOS:000281527200078
Résumé

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 mu m and PACS at 70/160 mu m or 100/160 mu 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.

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