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J/A+A/582/A66           SABOCA NGC 3603 IRS 9A images            (Hummel+, 2015)

Massive envelopes and filaments in the NGC 3603 star forming region. Hummel C.A., Stanke T., Galvan-Madrid R., Koribalski B.S. <Astron. Astrophys. 582, A66 (2015)> =2015A&A...582A..66H (SIMBAD/NED BibCode)
ADC_Keywords: H II regions ; Infrared sources ; Millimetric/submm sources Keywords: circumstellar matter - stars: early-type - stars: formation - stars: pre-main sequence - stars: individual: NGC3603 Abstract: The formation of massive stars and their arrival on the zero-age main-sequence occurs hidden behind dense clouds of gas and dust. In the giant HII region NGC 3603, the radiation of a young cluster of OB stars has dispersed dust and gas in its vicinity. At a projected distance of 2.5pc from the cluster, a bright mid-infrared (mid-IR) source (IRS 9A) was identified as a massive young stellar object (MYSO), located on the side of a molecular clump (MM2) of gas facing the cluster. We investigated the physical conditions in MM2, based on APEX sub-mm observations using the SABOCA and SHFI instruments, and archival ATCA 3mm continuum and CS spectral line data. We resolved MM2 into several compact cores, one of them closely associated with IRS 9A. These are likely to be infrared dark clouds because they do not show the typical hot-core emission lines and are mostly opaque against the mid-IR background. The compact cores have masses of up to several hundred times the solar mass and gas temperatures of about 50K, without evidence of internal ionizing sources. We speculate that IRS 9A is younger than the cluster stars, but is in an evolutionary state after the compact cores. Description: Observations of NGC 3603 MM2 at 350um with the SABOCA bolometer array attached to the APEX telescope on the Chajnantor plateau in Chile were carried out on September 15, 2011, providing a beam FWHM of 7.8". The precipitable water vapor column was about 0.2mm during the observations, which lasted about 15 minutes for a spiral raster map of about 1.5 arcminutes in radius centered on IRS 9A. Objects: ----------------------------------------------------------------------- RA (2000) DE Designation(s) ----------------------------------------------------------------------- 11 15 11.87 -61 17 00.6 NGC 3603 MM2 = [NBY2002] MM 2 11 15 11.34 -61 16 45.2 NGC 3603 IRS 9A = [FPA77] NGC 3603 IRS 9A ----------------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file list.dat 63 1 Information on fits file IRS9A_10.fits 2880 75 SABOCA fits images
See also: J/ApJ/799/100 : Herschel FIR observations of NGC3603 (Cecco+, 2015) Byte-by-byte Description of file: list.dat
Bytes Format Units Label Explanations
1- 9 F9.5 deg RAdeg Right ascension (J2000) 10- 18 F9.5 deg DEdeg Declination (J2000) 20- 23 F4.2 arcsec/pix Scale Scale of the image 25- 27 I3 --- Nx Number of pixels along X-axis 29- 31 I3 --- Ny Number of pixels along Y-axis 34- 35 I2 Kibyte size Size of FITS file 37- 49 A13 --- FileName Name of the fits file 51- 63 A13 --- Title Title of the file
Acknowledgements: Christian Hummel, chummel(at)eso.org
(End) Patricia Vannier [CDS] 06-Oct-2015
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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