J/A+A/529/A161 IRDC core G11.11-0.12P1 methanol maps (Gomez+, 2011)
High-angular resolution observations of methanol in the infrared dark cloud core
G11.11-0.12P1.
Gomez L., Wyrowski F., Pillai T., Leurini S., Menten K.M.
<Astron. Astrophys. 529, A161 (2011)>
=2011A&A...529A.161G 2011A&A...529A.161G
ADC_Keywords: Molecular clouds ; Abundances ; Interferometry
Keywords: ISM: abundances - ISM: individual objects (G11.11-0.12P1) -
ISM: molecules - stars: formation - techniques: interferometric
Abstract:
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 at1mm. Our observations show extended emission
in the continuum at 1 and 3mm. The methanol 2-1 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 at the central peak with respect to the
other two peaks, where it decreases by about an order of magnitude.
Wings in the CH3OH 2-1 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.
Objects:
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RA (2000) DE Designation(s)
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18 10 28.4 -19 22 29 IRDC G11.11-0.12P1 = [CFR2000] G11.11-0.12 P1
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
maps.dat 143 7 List of the maps (in "figs" subdirectory)
figs/* . 7 Maps in FITS format
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See also:
J/ApJ/639/227 : MSX IRDC candidate catalog (Simon+, 2006)
J/ApJ/641/389 : Millimetric observations of IRDC cores (Rathborne+, 2006)
J/ApJ/680/349 : Galactic distribution of IRDCs (Jackson+, 2008)
J/ApJ/686/384 : 12CO, 13CO, C18O survey of IRDCs (Du+, 2008)
J/A+A/503/859 : IRDC 19175-4 and IRDC 19175-5 turbulence maps (Beuther+, 2009)
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Byte-by-byte Description of file: maps.dat
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Bytes Format Units Label Explanations
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1- 33 A33 --- FileName Name of the file, in subdirectory figs
35- 37 I3 pix Npix Number of pixels (in X and Y directions)
39- 42 F4.2 arcsec/pix Scale Scale of the image
44- 51 F8.4 deg RAdeg Right ascension of image center (J2000)
52- 59 F8.4 deg DEdeg Declination of image center (J2000)
61-143 A83 --- Title Title of the file
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Acknowledgements:
Laura Gomez, lgomez(at)mpifr.de
(End) Patricia Vannier [CDS] 30-Mar-2011