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27 papers · 2 filters
CH3OCH3 in Orion-KL: a striking similarity with HCOOCH3
N. Brouillet, D. Despois, A. Baudry +7
We used several data sets from the Plateau de Bure Interferometer to map the dimethyl ether emission in Orion-KL with different arcsec spatial resolutions and different energy leve…
Dust continuum and Polarization from Envelope to Cores in Star Formation: A Case Study in the W51 North region
Ya-Wen Tang, Paul T. P. Ho, Patrick M. Koch +2
We present the first high-angular resolution (up to 0.7", ~5000 AU) polarization and thermal dust continuum images toward the massive star-forming region W51 North. The observation…
Changes Of Dust Opacity With Density in the Orion A Molecular Cloud
Arabindo Roy, Peter G. Martin, Danae Polychroni +12
We have studied the opacity of dust grains at submillimeter wavelengths by estimating the optical depth from imaging at 160, 250, 350, and 500 um from the Herschel Gould Belt Surve…
Chemistry in Disks VIII: the CS molecule as an analytic tracer of turbulence in disks
S. Guilloteau, A. Dutrey, V. Wakelam +5
Turbulence is thought to be a key driver of the evolution of protoplanetary disks, regulating the mass accretion process, the transport of angular momentum, and the growth of dust…
A sensitive survey for 13CO, CN, H2CO and SO in the disks of T Tauri and Herbig Ae stars
S. Guilloteau, E. Di Folco, A. Dutrey +3
We use the IRAM 30-m telescope to perform a sensitive search for CN N=2-1 in 42 T Tauri or Herbig Ae systems located mostly in the Taurus-Auriga region. CO J=2-1 is observed…
The distribution of warm gas in the G327.3--0.6 massive star-forming region
S. Leurini, F. Wyrowski, F. Herpin +3
Most studies of high-mass star formation focus on massive luminous clumps, but the physical properties of their larger scale environment are poorly known. In this work, we aim at c…