J/A+A/563/L2 NGC1333-IRAS2A CALYPSO IRAM-PdBI 1mm maps (Maury+, 2014)
First results from the CALYPSO IRAM-PdBI survey.
II. Resolving the hot corino in the Class 0 protostar NGC 1333-IRAS2A.
Maury A.J., Belloche A., Andre P., S. Maret, F. Gueth, C. Codella,
Cabrit S., Testi L., Bontemps S.
<Astron. Astrophys. 563, L2 (2014)>
=2014A&A...563L...2M 2014A&A...563L...2M
ADC_Keywords: YSOs ; Infrared sources ; Millimetric/submm sources
Keywords: stars: formation - circumstellar matter -
individual objects: NGC 1333-IRAS2A - radio lines: ISM -
methods: observational
Abstract:
We investigate the origin of complex organic molecules (COMs) in the
gas phase around the low-mass Class 0 protostar NGC 1333-IRAS2A, to
determine if the COM emission lines trace an embedded disk, shocks
from the protostellar jet, or the warm inner parts of the protostellar
envelope.
In the framework of the CALYPSO IRAM Plateau de Bure survey, we
obtained large bandwidth spectra at sub-arcsecond resolution towards
NGC 1333-IRAS2A. We identify the emission lines towards the central
protostar and perform Gaussian fits to constrain the size of the
emitting region for each of these lines, tracing various physical
conditions and scales.
Description:
The source IRAS2A was observed with the IRAM PdB six-element array in
December 2010 and January-February 2011 using both the A and C
configurations.
Objects:
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RA (2000) DE Designation(s)
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03 28 55.55 +31 14 36.7 NGC1333-IRAS2A = [JCC87] IRAS 2A
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 145 2 List of FITS maps
maps/* . 2 Individual FITS maps (continuum and methyl formate)
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See also:
J/ApJ/575/354 : Young stellar objects in the NGC 1333 (Getman+, 2002)
J/A+A/563/L1 : NGC1333-IRAS2A CALYPSO IRAM-PdBI 1mm & 3mm maps (Maret+, 2014)
J/A+A/563/L3 : NGC1333-IRAS2A CALYPSO IRAM-PdBI SiO & SO maps (Codella+, 2014)
Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 23 F4.2 arcsec/pix Scale Scale of the image
25- 28 I4 pix Nx Number of pixels along X-axis
29 A1 --- --- [x]
30- 33 I4 pix Ny Number of pixels along Y-axis
35- 67 A33 --- FileName Name of FITS file in subdirectory maps
69-145 A77 --- Title Title of the file
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Acknowledgements:
Anaelle Maury, amaury(at)cfa.harvard.edu
(End) Patricia Vannier [CDS] 17-Feb-2014