J/MNRAS/453/2006 NGC 2264 SCUBA-2 observations (Buckle+, 2015)
Wide-field SCUBA-2 observations of NGC 2264: submillimetre clumps and filaments.
Buckle J.V., Richer J.S.
<Mon. Not. R. Astron. Soc., 453, 2006-2016 (2015)>
=2015MNRAS.453.2006B 2015MNRAS.453.2006B (SIMBAD/NED BibCode)
ADC_Keywords: Molecular clouds ; Millimetric/submm sources
Keywords: stars: formation - ISM: clouds - submillimetre: ISM
Abstract:
We present wide-field observations of the NGC 2264 molecular cloud in
the dust continuum at 850 and 450µm using SCUBA-2 on the James
Clerk Maxwell Telescope. Using 12CO 3->2 molecular line data, we
determine that emission from CO contaminates the 850µm emission at
levels ∼30 per cent in localized regions associated with
high-velocity molecular outflows. Much higher contamination levels of
60 per cent are seen in shocked regions near the massive star S Mon.
If not removed, the levels of CO contamination would contribute an
extra 13 per cent to the dust mass in NGC 2264. We use the fellwalker
routine to decompose the dust into clumpy structures, and a
Hessian-based routine to decompose the dust into filamentary
structures. The filaments can be described as a hub-filament
structure, with lower column density filaments radiating from the NGC
2264 C protocluster hub. Above mean filament column densities of
2.4x1022cm-2, star formation proceeds with the formation of two or
more protostars. Below these column densities, filaments are starless,
or contain only a single protostar.
Description:
The SCUBA-2 observations presented comprise 11h of data collected
from 2013 January to December. Continuum observations at 850 and 450um
were made using fully sampled 1° diameter circular regions
(PONG3600 mapping mode).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 58 18 Filament properties, assuming a filament width
of 0.1pc.
tablea1.dat 97 136 *SCUBA-2 850um dust clumps, with peak positions
reported
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Note on tablea1.dat: Sources without a Spitzer protostar are assumed starless.
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See also:
J/AJ/127/2659 : CHANDRA observations of NGC 2264 (Ramirez+, 2004)
J/A+A/455/903 : ACIS-I observations of NGC 2264 (Flaccomio+, 2006)
J/AJ/134/999 : X-ray observations of NGC 2264 (Dahm+, 2007)
J/AJ/138/1116 : A Spitzer view of NGC 2264 (Sung+, 2009)
J/A+A/499/175 : 12CO(2-1) map of NGC 2264-C (Maury+, 2009)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Fil Filament sequential number
4 I1 h RAh Central filament right ascension (J2000)
6- 7 I2 min RAm Central filament right ascension (J2000)
9- 13 F5.2 s RAs Central filament right ascension (J2000)
15 A1 --- DE- Central filament declination sign (J2000)
16- 17 I2 deg DEd Central filament declination (J2000)
19- 20 I2 arcmin DEm Central filament declination (J2000)
22- 25 F4.1 arcsec DEs Central filament declination (J2000)
27- 30 F4.2 pc Length Filament length
32- 36 F5.2 10+22cm-2 <N(H2)> Filament mean H2 column density
38- 41 I4 Msun Mass Filament mass
43- 46 I4 Msun/pc Mass/Length Filament mass-to-length ratio
48- 53 E6.2 cm-3 Vdens Filament volume density
55- 58 F4.1 K <Tdust> Filament mean dust temperature
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Clump Clump sequential number
5 I1 h RAh Peak right ascension (J2000)
7- 8 I2 min RAm Peak right ascension (J2000)
10- 14 F5.2 s RAs Peak right ascension (J2000)
16 A1 --- DE- Peak declination sign (J2000)
17- 18 I2 deg DEd Peak declination (J2000)
20- 21 I2 arcmin DEm Peak declination (J2000)
23- 27 F5.2 arcsec DEs Peak declination (J2000)
29- 33 I5 arcsec+2 Size Clump size
35- 38 F4.2 mJy/beam Fpeak SCUBA peak flux at 850um
40- 44 F5.2 mJy Ftot SCUBA total flux at 850um
46- 50 F5.2 K Clump mean temperature
52- 55 F4.1 10+22cm-2 <N(H2)> Clump mean H2 column density
57- 62 F6.1 Msun Mass Clump mass
64- 71 A8 --- Class Spitzer class
75- 97 A23 --- SCUBA Matching SCUBA core
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History:
27-Apr-2016: From electronic version of the journal
29-Jul-2023: in table A1, column SCUBA corrected
(End) Patricia Vannier [CDS] 18-Mar-2016