SADAVOY, S. I.; DI FRANCESCO, J.; ANDRE, Ph.; PEZZUTO, S.; BERNARD, J. -P.; BONTEMPS, Sylvain; BRESSERT, E.; CHITSAZZADEH, S.; FALLSCHEER, C.; HENNEMANN, M.; HILL, T.; MARTIN, P.; MOTTE, F.; LUONG, Q. Nguyen; PERETTO, N.; REID, M.; SCHNEIDER, N.; TESTI, L.; WHITE, G. J.; WILSON, C.

doi:10.1051/0004-6361/201117934

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SADAVOY, S. I.

DI FRANCESCO, J.
Herzberg Institute of Astrophysics

ANDRE, Ph.
Astrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]

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Astronomy and Astrophysics - A&A. 2012, vol. 540, p. A10

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We present continuum observations of the Perseus B1-E region from the Herschel Gould Belt Survey. These Herschel data reveal a loose grouping of substructures at 160 - 500 micron not seen in previous submillimetre observations. We measure temperature and column density from these data and select the nine densest and coolest substructures for follow-up spectral line observations with the Green Bank Telescope. We find that the B1-E clump has a mass of ~ 100 solar masses and appears to be gravitationally bound. Furthermore, of the nine substructures examined here, one substructure (B1-E2) appears to be itself bound. The substructures are typically less than a Jeans length from their nearest neighbour and thus, may interact on a timescale of ~ 1 Myr. We propose that B1-E may be forming a first generation of dense cores, which could provide important constraints on the initial conditions of prestellar core formation. Our results suggest that B1-E may be influenced by a strong, localized magnetic field, but further observations are still required.< Leer menos

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Galaxy Astrophysics

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Herschel Observations of a Potential Core Forming Clump: Perseus B1-E

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