J/ApJ/668/906 Massive clumps in NGC 6334 (Munoz+, 2007)
Massive clumps in the NGC 6334 star-forming region.
Munoz D.J., Mardones D., Garay G., Rebolledo D., Brooks K., Bontemps S.
<Astrophys. J., 668, 906-917 (2007)>
=2007ApJ...668..906M 2007ApJ...668..906M
ADC_Keywords: Clusters, open; Supernova remnants ; Morphology ;
Millimetric/submm sources
Keywords: stars: formation
Abstract:
We report observations of dust continuum emission at 1.2mm toward the
star-forming region NGC 6334 made with the SEST SIMBA bolometer array.
The observations cover an area of ∼2deg2 with approximately uniform
noise. We detected 181 clumps spanning almost 3 orders of magnitude in
mass (3-6x103M☉) and with sizes in the range 0.1-1.0pc.
Description:
The regions NGC 6334 and NGC 6357 were mapped using the 37-channel
SEST Imaging Bolometer Array (SIMBA) in the fast-mapping mode in three
different epochs: 2002 July, September, and 2003 May.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 104 8 Radio, FIR, and Millimeter Sources in NGC 6334
table4.dat 95 182 Clump properties in NGC 6334
--------------------------------------------------------------------------------
See also:
J/A+A/481/169 : ATCA 3mm obs. of NGC 6334I and NGC 6334I(N) (Beuther+, 2008)
J/A+A/466/989 : Hot ammonia from NGC 6334I and NGC 6334I(N) (Beuther+, 2007)
J/A+A/357/1020 : JHK photometry in NGC 6334 IV (Persi+, 2000)
J/ApJS/69/99 : Centers of star formation in NGC 6334 (Straw+ 1989)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- RName Radio name (1)
14- 15 I2 h RAh ? Radio right ascension (J2000.0)
17- 18 I2 min RAm ? Radio right ascension (J2000.0)
20- 23 F4.1 s RAs ? Radio right ascension (J2000.0)
25 A1 --- DE- Radio declination sign (J2000.0)
26- 27 I2 deg DEd ? Radio declination (J2000.0)
29- 30 I2 arcmin DEm ? Radio declination (J2000.0)
32- 33 I2 arcsec DEs ? Radio declination (J2000.0)
35- 38 A4 --- FIR Far-IR name
40- 41 I2 h RAFh ? FIR right ascension (J2000.0)
43- 44 I2 min RAFm ? FIR right ascension (J2000.0)
46- 49 F4.1 s RAFs ? FIR right ascension (J2000.0)
51 A1 --- DEF- FIR declination sign (J2000.0)
52- 53 I2 deg DEFd ? FIR declination (J2000.0)
55- 56 I2 arcmin DEFm ? FIR declination (J2000.0)
58- 59 I2 arcsec DEFs ? FIR declination (J2000.0)
61- 66 A6 --- SIMBA SIMBA name
68- 77 A10 --- SIMBAs Other SIMBA names
79- 80 I2 h RASh ? SIMBA right ascension (J2000.0)
82- 83 I2 min RASm ? SIMBA right ascension (J2000.0)
85- 88 F4.1 s RASs ? SIMBA right ascension (J2000.0)
90 A1 --- DES- SIMBA declination sign (J2000.0)
91- 92 I2 deg DESd ? SIMBA declination (J2000.0)
94- 95 I2 arcmin DESm ? SIMBA declination (J2000.0)
97- 98 I2 arcsec DESs ? SIMBA declination (J2000.0)
100-104 A5 --- Ref References (2)
--------------------------------------------------------------------------------
Note (1): The radio counterpart for FIR source V is observed at 1.6GHz with
similar peak intensity to G351.20+0.70, but was not identified earlier
as an HII region but as part of a PDR shell (Moran et al.
1990ApJ...348..147M 1990ApJ...348..147M; Jackson & Kraemer 1999ApJ...512..260J 1999ApJ...512..260J; Burton et
al. 2000ApJ...542..359B 2000ApJ...542..359B).
For sources, A, C, D, E, F, [MMG2007] Radio A in Simbad.
Note (2): References as follows:
1 = Rodriguez et al., 1982ApJ...255..103R 1982ApJ...255..103R
2 = McBreen et al., 1979ApJ...232L.183M 1979ApJ...232L.183M
3 = Gezari, 1982ApJ...259L..29G 1982ApJ...259L..29G
4 = Moran et al., 1990ApJ...348..147M 1990ApJ...348..147M
5 = this work
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 A6 --- [MMG2007] SIMBA clump identification, cl NNN (1)
8 A1 --- f_[MMG2007] [B] indicates a significantly warmer cloud
10- 11 I2 h RAh Hour of Right Ascension (J2000)
13- 14 I2 min RAm Minute of Right Ascension (J2000)
16- 19 F4.1 s RAs Second of Right Ascension (J2000)
21 A1 --- DE- Sign of the Declination (J2000)
22- 23 I2 deg DEd Degree of Declination (J2000)
25- 26 I2 arcmin DEm Arcminute of Declination (J2000)
28- 31 F4.1 arcsec DEs Arcsecond of Declination (J2000)
33- 37 F5.2 Jy Sp Peak intensity at 1.2mm
39- 43 F5.2 Jy S Flux density at 1.2mm
45- 48 F4.2 pc Reff Clump effective radius
50- 56 E7.2 solMass Mass1.2 Clump mass from the 1.2mm data (3)
58- 64 E7.2 solMass Mass2T ? Clump mass from 2 temperature clump
ensemble (4)
66- 72 E7.2 cm-3 Nden ? Average number density (5)
74- 95 A22 --- Reg Region name
--------------------------------------------------------------------------------
Note (1): Clump 210 has an undetermined mass after subtracting the
free-free emission at 1.2mm.
Note (3): Computed from all the emission at 1.2 mm and assuming a
temperature of 17K. while M considers the two-temperature clump
ensemble and the correction by free-free emission.
Note (4): Corrected by free-free emission.
Note (5): Computed using Reff and Mass2T and assuming spherical clumps with
a mean molecular weight of µ=2.3.
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 03-Jan-2010