eprintid: 10142
rev_number: 23
eprint_status: archive
userid: 599
dir: disk0/00/01/01/42
datestamp: 2008-10-16 11:23:31
lastmod: 2015-07-23 09:35:12
status_changed: 2008-10-16 11:23:31
type: article
metadata_visibility: show
creators_name: Codella, C.
creators_name: Viti, S.
creators_name: Williams, D.A.
creators_name: Bachiller, R.
creators_id: 
creators_id: SVITI18
creators_id: DAWIL42
creators_id: 
title: First evidence for molecular interfaces between outflows and ambient clouds in high-mass star-forming regions?
ispublished: pub
subjects: 11000
divisions: F60
abstract: We present new observations of the Cep A East region of massive star formation and describe an extended and dynamically distinct feature not previously recognized. This feature is present in emission from H2CS, OCS, CH3OH, and HDO at −5.5 km s−1 but is not traced by the conventional tracers of star-forming regions, H2S, SO2, SO, and CS. The feature is extended up to at least 0.1 pc. We show that the feature is neither a hot core nor a shocked outflow. However, the chemistry of the feature is consistent with predictions from a model of an eroding interface between a fast wind and a dense core; mixing between the two media occurs in the interface on a timescale of 10–50 yr. If these observations are confirmed by detailed maps and by detections in species also predicted to be abundant (e.g., HCO+, H2CO, and NH3), this feature would be the first detection of such an interface in regions of massive star formation. An important implication of the model is that a significant reservoir of sulfur in grain mantles is required to be in the form of OCS.
date: 2006-06-10
official_url: http://dx.doi.org/10.1086/505426
vfaculties: VMPS
rae2008: 19
oa_status: green
language: eng
primo: open
primo_central: open_green
doi: 10.1086/505426
lyricists_name: Viti, S
lyricists_name: Williams, D
lyricists_id: SVITI18
lyricists_id: DAWIL42
full_text_status: public
publication: The Astrophysical Journal
volume: 644
number: 1
pagerange: L41-L44
refereed: TRUE
issn: 0004-637X
citation:        Codella, C.;    Viti, S.;    Williams, D.A.;    Bachiller, R.;      (2006)    First evidence for molecular interfaces between outflows and ambient clouds in high-mass star-forming regions?                   The Astrophysical Journal , 644  (1)   L41-L44.    10.1086/505426 <https://doi.org/10.1086/505426>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10142/1/10142.pdf