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Small-scale structure in the Rosette molecular cloud revealed by Herschel

Di Francesco, J.; Sadavoy, S.; Motte, F.; Schneider, N.; Hennemann, M.; Csengeri, T.; Bontemps, S.; Balog, Z.; Zavagno, A.; André, Ph.; Saraceno, P.; Griffin, M.; Men'shchikov, A.; Abergel, A.; Baluteau, J.-P.; Bernard, J.-Ph.; Cox, P.; Deharveng, L.; Didelon, P.; di Giorgio, A.-M.; Hargrave, P.; Huang, M.; Kirk, J.; Leeks, S.; Li, J. Z.; Marston, A.; Martin, P.; Minier, V.; Molinari, S.; Olofsson, G.; Persi, P.; Pezzuto, S.; Russeil, D.; Sauvage, M.; Sibthorpe, B.; Spinoglio, L.; Testi, L.; Teyssier, D.; Vavrek, R.; Ward-Thompson, D.; White, G.; Wilson, C. and Woodcraft, A. (2010). Small-scale structure in the Rosette molecular cloud revealed by Herschel. Astronomy & Astrophysics, 518, article no. L91.

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We present a preliminary analysis of the small-scale structure found in new 70-520 μm continuum maps of the Rosette molecular cloud (RMC), obtained with the SPIRE and PACS instruments of the Herschel Space Observatory. We find 473 clumps within the RMC using a new structure identification algorithm, with sizes up to ~1.0 pc in diameter. A comparison with recent Spitzer maps reveals that 371 clumps are "starless" (without an associated young stellar object), while 102 are "protostellar". Using the respective values of dust temperature, we determine the clumps have masses (Mc) over the range -0.75 ≤ log (Mc/M) ≤ 2.50. Linear fits to the high-mass tails of the resulting clump mass spectra (CMS) have slopes that are consistent with those found for high-mass clumps identified in CO emission by other groups.

Item Type: Journal Article
Copyright Holders: 2010 ESO
ISSN: 1432-0746
Extra Information: 5 pp.
Keywords: interstellar clouds; stellar formation; protostars; interstellar dust
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 25051
Depositing User: Mairi Harding
Date Deposited: 02 Dec 2010 11:53
Last Modified: 29 Nov 2016 01:01
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