J/MNRAS/399/1506 IRDC cores in SCUBA Legacy Catalogue (Parsons+, 2009)
Infrared dark cloud cores in the SCUBA Legacy Catalogue.
Parsons H., Thompson M.A., Chrysostomou A.
<Mon. Not. R. Astron. Soc., 399, 1506-1522 (2009)>
=2009MNRAS.399.1506P 2009MNRAS.399.1506P
ADC_Keywords: Molecular clouds ; Nebulae, dark ; Infrared sources ;
Millimetric/submm sources
Keywords: stars: formation - dust, extinction - infrared: ISM - submillimetre
Abstract:
We present an investigation of candidate infrared dark cloud (IRDC)
cores as identified by Simon et al. (2006, Cat. J/ApJ/639/227)
located within the Submillimetre Common User Bolometer Array (SCUBA)
Legacy Catalogue. After applying a uniform noise cut to the catalogue
data, we identify 154 IRDC cores that were detected at 850um and 51
cores that were not. We derive column densities for each core from
their 8um extinction and find that the IRDCs detected at 850um have
higher column densities (a mean of 1.7x1022cm-2) compared to those
cores not detected at 850um (a mean of 1.0x1022cm-2).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 84 154 Data for all MSX identified IRDC candidate cores
within the SCUBA Legacy Catalogue,
with a SCUBA detection
table2.dat 64 51 Data for all MSX identified IRDC candidate cores
within the SCUBA Legacy Catalogue,
with no detection at 850um
table3.dat 76 33 Mass estimates for clouds with distances
obtained by the GRS survey
(Jackson et al., 2008, Cat. J/ApJ/680/349)
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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/ApJS/175/277 : Submillimeter-Continuum SCUBA detections (Di Francesco+, 2008)
J/ApJ/698/324 : Spitzer IRDCs (Ragan+, 2009)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- MSXDC MSX dark cloud ID, "GLLL.ll+BB.bb (a)"
19- 36 A18 --- SCUBA SCUBA ID, F_JHHMMSS.s+DDMMSS or
E_JHHMMSS.s+DDMMSS (G1)
38- 39 I2 h RAh Right ascension (J2000)
41- 42 I2 min RAm Right ascension (J2000)
44- 47 F4.1 s RAs Right ascension (J2000)
49 A1 --- DE- Declination sign (J2000)
50- 51 I2 deg DEd Declination (J2000)
53- 54 I2 arcmin DEm Declination (J2000)
56- 57 I2 arcsec DEs Declination (J2000)
59- 62 F4.2 --- C Peak contrast value
64- 68 F5.2 Jy F850 Peak flux at 850um (in Jy/beam)
70- 73 F4.2 10+22cm-2 N8(H2) H2 column density determined
from 8.8um extinction
75- 80 F6.2 10+22cm-2 N850(H2) H2 column density determined
with SCUBA 850um data
82- 84 A3 --- MIPS? [Yes/No ] MIPS source (G2)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- MSXDC MSX dark cloud ID, "GLLL.ll+BB.bb (a)"
19- 25 F7.3 deg GLON Galactic longitude
27- 33 F7.3 deg GLAT Galactic latitude
35- 36 I2 h RAh Right ascension (J2000)
38- 39 I2 min RAm Right ascension (J2000)
41- 44 F4.1 s RAs Right ascension (J2000)
46 A1 --- DE- Declination sign (J2000)
47- 48 I2 deg DEd Declination (J2000)
50- 51 I2 arcmin DEm Declination (J2000)
53- 54 I2 arcsec DEs Declination (J2000)
56- 59 F4.2 --- C Peak contrast value
61- 64 F4.2 10+22cm-2 N8(H2) H2 column density determined from
8.8um extinction
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- MSXDC MSX dark cloud ID, "GLLL.ll+BB.bb (a)"
19- 36 A18 --- SCUBA SCUBA ID, F_JHHMMSS.s+DDMMSS or
E_JHHMMSS.s+DDMMSS (JCMTS) (G1)
38- 44 F7.3 deg GLON Galactic longitude (1)
46- 52 F7.3 deg GLAT Galactic latitude (1)
54- 57 F4.2 --- C Peak contrast value
59- 63 F5.2 Jy F850 Integrated flux at 850um (2)
65- 67 F3.1 kpc Dist Distance
69- 72 I4 Msun Mass Mass
74- 76 A3 --- MIPS? [Yes/No ] MIPS source (G2)
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Note (1): Galactic coordinates quoted come from the MSX catalogue positions
(Simon et al. 2006, Cat. J/ApJ/639/227).
Note (2): Flux integrated over the area of the object as defined by
Clumpfind (Di Francesco et al. 2008, Cat. J/ApJS/175/277).
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Global notes:
Note (G1): F stands for fundamental catalogue and E for extended catalogue,
and in Simbad resp.
Note (G2): Cores with MIPS data (24, 70, 160um) available are denoted by a
yes (if an embedded 24um source is present) or
no (if an embedded 24um is not present)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 12-Aug-2011