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From forced collapse to H ii region expansion in Mon R2: Envelope density structure and age determination with Herschel
P. Didelon, F. Motte, P. Tremblin +32
The surroundings of HII regions can have a profound influence on their development, morphology, and evolution. This paper explores the effect of the environment on H II regions in…
A possible link between the power spectrum of interstellar filaments and the origin of the prestellar core mass function
A. Roy, Ph. Andre', D. Arzoumanian +17
Two major features of the prestellar CMF are: 1) a broad peak below 1 Msun, presumably corresponding to a mean gravitational fragmentation scale, and 2) a characteristic power-law…
Understanding star formation in molecular clouds III. Probability distribution functions of molecular lines in Cygnus X
N. Schneider, S. Bontemps, F. Motte +11
Column density (N) PDFs serve as a powerful tool to characterize the physical processes that influence the structure of molecular clouds. Star-forming clouds can best be characteri…
Dust and Gas in the disc of HL Tauri: Surface density, dust settling, and dust-to-gas ratio
Christophe Pinte, William R. F. Dent, Francois Menard +4
The recent ALMA observations of the disc surrounding HL Tau reveal a very complex dust spatial distribution. We present a radiative transfer model accounting for the observed gaps…
Detection of two power-law tails in the probability distribution functions of massive GMCs
N. Schneider, S. Bontemps, P. Girichidis +20
We report the novel detection of complex high-column density tails in the probability distribution functions (PDFs) for three high-mass star-forming regions (CepOB3, MonR2, NGC6334…
Herschel Observations of the W3 GMC (II): Clues to the Formation of Clusters of High-Mass Stars
A. Rivera-Ingraham, P. G. Martin, D. Polychroni +18
The W3 GMC is a prime target for investigating the formation of high-mass stars and clusters. This second study of W3 within the HOBYS Key Program provides a comparative analysis o…