Herschelobservations of a potential core-forming clump: Perseus B1-E Journal Articles uri icon

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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.


  • Sadavoy, SI
  • Di Francesco, J
  • André, Ph
  • Pezzuto, S
  • Bernard, J-P
  • Bontemps, S
  • Bressert, E
  • Chitsazzadeh, S
  • Fallscheer, C
  • Hennemann, M
  • Hill, T
  • Martin, P
  • Motte, F
  • Nguyn Lu’o’ng, Q
  • Peretto, N
  • Reid, M
  • Schneider, N
  • Testi, L
  • White, GJ
  • Wilson, Christine D

publication date

  • April 2012