2011A&A...529A.161G


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST07:13:52

2011A&A...529A.161G - Astronomy and Astrophysics, volume 529A, 161-161 (2011/5-1)

High-angular resolution observations of methanol in the infrared dark cloud core G11.11-0.12P1.

GOMEZ L., WYROWSKI F., PILLAI T., LEURINI S. and MENTEN K.M.

Abstract (from CDS):

Recent studies suggest that infrared dark clouds (IRDCs) have the potential of harboring the earliest stages of massive star formation and indeed evidence for this is found toward distinct regions within them. We present a study with the Plateau de Bure Interferometer of a core in the archetypal filamentary IRDC G11.11-0.12 of a few arcsecond resolution to determine its physical and chemical structures. The data consist of continuum and line observations covering the C34S 2->1 line and the methanol 2k->1k vt=0 lines at 3mm and the methanol 5k->4k vt=0 lines at 1mm. Our observations show extended emission in the continuum at 1 and 3mm. The methanol 2k->1k vt=0 emission has three maxima extending over a 1pc scale (when merged with single-dish short-spacing observations); one of the maxima is spatially coincident with the continuum emission. The fitting results show an enhanced methanol fractional abundance (∼3x10–8) at the central peak with respect to the other two peaks, where it decreases by about an order of magnitude (∼4-6x10–9). Evidence of extended 4.5µm emission, ``wings'' in the CH3OH 2k->1k spectra, and CH3OH abundance enhancements point to the presence of an outflow in the east-west direction. In addition, we find a gradient of ∼4km/s in the same direction, which we interpret as being produced by an outflow(s)-cloud interaction.

Abstract Copyright:

Journal keyword(s): ISM: abundances - ISM: individual objects: G11.11-0.12P1 - ISM: molecules - techniques: interferometric - stars: formation

VizieR on-line data: <Available at CDS (J/A+A/529/A161): maps.dat fig/*>

Simbad objects: 9

goto Full paper

goto View the reference in ADS

Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 IRAS 05358+3543 mul 05 39 10.4 +35 45 19           ~ 134 1
2 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5320 1
3 QSO B1730-130 QSO 17 33 02.70578476 -13 04 49.5481484   18 18.5 18.78 17.39 ~ 983 1
4 MMB G011.109-00.114 Y*O 18 10 28.4449 -19 22 38.782           ~ 47 0
5 [CCE98b] 011.11-0.12 Cld 18 10.5 -19 23           ~ 85 1
6 NAME IRDC 18223-3 Y*O 18 25 08.4002 -12 45 15.466           ~ 62 0
7 NAME Dragon Nebula DNe 18 42 50.6 -04 03 30           ~ 112 0
8 MSXDC G035.39-0.33 MoC 18 57 09.0 +02 07 46           ~ 82 0
9 EM* MWC 349 ** 20 32 45.499080 +40 39 36.74124   15.88 13.15 12.13   Bep 707 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2011A&A...529A.161G and select 'bookmark this link' or equivalent in the popup menu


2020.07.13-07:13:52

© Université de Strasbourg/CNRS

    • Contact