J/MNRAS/392/768 SED of 180 SIMBA 1.2mm sources (Hill+, 2009)
Spectral energy distribution modelling of southern candidate massive protostars
using the Bayesian inference method.
Hill T., Pinte C., Minier V., Burton M.G., Cunningham M.R.
<Mon. Not. R. Astron. Soc., 392, 768-782 (2009)>
=2009MNRAS.392..768H 2009MNRAS.392..768H
ADC_Keywords: Millimetric/submm sources ; Masers ; H II regions ;
Energy distributions
Keywords: masers - stars: early-type - stars: formation -
stars: fundamental parameters - H II regions - submillimetre
Abstract:
Concatenating data from the millimetre regime to the infrared, we
have performed spectral energy distribution (SED) modelling for 227
of the 405 millimetre continuum sources of Hill et al. (2005, Cat.
J/MNRAS/363/405) which are thought to contain young massive stars
in the earliest stages of their formation. Three main parameters are
extracted from the fits: temperature, mass and luminosity. The method
employed was the Bayesian inference, which allows a statistically
probable range of suitable values for each parameter to be drawn for
each individual protostellar candidate. This is the first application
of this method to massive star formation.
Description:
Our 1.2mm SIMBA survey revealed a total of 405 millimetres continuum
sources (Paper I, Hill et al. 2005, Cat. J/MNRAS/363/405)
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 98 180 *Parameters resulting from SED modelling of 180
of the 405 sources in the SIMBA source list
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Note on table2.dat: For each of the temperature, mass and luminosity, the
range corresponding to a 1σ (68 per cent) probability of
occurrence is presented, with the min and max values representing
the lower and upper values of this range, respectively.
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See also:
J/MNRAS/363/405 : SIMBA observations of cold cores (Hill+, 2005)
J/MNRAS/368/1223 : SCUBA observations of cold cores (Hill+, 2006)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Peak right ascension (J2000)
4- 5 I2 min RAm Peak right ascension (J2000)
7- 11 F5.2 s RAs Peak right ascension (J2000)
13 A1 --- DE- Peak declination sign (J2000)
14- 15 I2 deg DEd Peak declination (J2000)
17- 18 I2 arcmin DEm Peak declination (J2000)
20- 23 F4.1 arcsec DEs Peak declination (J2000)
25- 38 A14 --- [HBM2005] Source name (GLLL.ll+BB.BBBA) (1)
39 A1 --- n_[HBM2005] [*] * = Sources which have a distance ambiguity
41- 42 A2 --- Tr [mr ] Ident tracer (2)
44- 49 A6 --- Fit Fit type, Single or SED (3)
50 A1 --- n_Fit [*] * = sources that were fit with IRAS
upper limits
52- 58 E7.2 K Tmin Minimum cold temperature
60- 66 E7.2 K Tmax Maximum cold temperature
68- 74 E7.2 solMass Mmin Minimum mass
76- 82 E7.2 solMass Mmax Maximum mass
84- 90 E7.2 solLum Lmim Minimum luminosity
92- 98 E7.2 solLum Lmax Maximum luminosity
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Note (1): Distance values are reported in Paper I (Cat. J/MNRAS/363/405).
Source names given to two (or less) decimal places are consistent with
those reported by Walsh et al. (1998, Cat. J/MNRAS/301/640), Minier
et al. (2001A&A...369..278M 2001A&A...369..278M) and Thompson et al. (2006, Cat.
J/A+A/453/1003) which were targeted in the SIMBA survey (Paper I,
Hill et al., 2005, Cat. J/MNRAS/363/405). Note that in a few
instances, there may not be a direct translation between their
Galactic name and their equatorial coordinates. Source names given to
three decimal places denote those sources identified by SIMBA, with
the extended Galactic names intended to distinguish closely associated
sources. The source names are consistent with table 5 of Paper I.
Note (2): Denotes (any) association as follows:
m = association with methanol maser sites
r = association with UC HII regions
mr = sources associated with both a methanol maser and a radio
continuum source
mm = the MM-only sources which are devoid of both of these sources
Note (3): This column depicts the type of SED applied to the source. 'SED'
indicates that a two-component SED has been applied, whilst 'Single'
indicates that a single cold-component fit has been applied to the source.
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History:
From electronic version of the journal
References:
Hill et al., Paper I 2005MNRAS.363..405H 2005MNRAS.363..405H, Cat. J/MNRAS/363/405
Hill et al., Paper II 2006MNRAS.368.1223H 2006MNRAS.368.1223H, Cat. J/MNRAS/368/1223
(End) Patricia Vannier [CDS] 24-May-2010