J/A+A/498/147 High mass protostellar objects physical parameters (Grave+, 2009)
Spitzer-IRAC GLIMPSE of high mass protostellar objects.
II. SED modelling of a bona fide sample.
Grave J.M.C., Kumar M.S.N.
<Astron. Astrophys., 498, 147-159 (2009)>
=2009A&A...498..147G 2009A&A...498..147G
ADC_Keywords: Infrared sources ; Millimetric/submm sources ; Morphology
Keywords: stars: formation - stars: evolution - ISM: HII regions -
infrared: stars
Abstract:
In a previous work (Paper I, Kumar & Grave, 2007A&A...472..155K 2007A&A...472..155K) a
sample of 380 HMPO targets was studied using the GLIMPSE point source
catalog and images. A colour-magnitude analysis of the point sources
resulted in the identification of infrared counterparts (IRC) of the
(sub)mm cores of HMPO candidates which were considered bona fide
targets.
We aim to estimate and analyse the physical properties of the infrared
counterparts of HMPOs by comparing their spectral energy distributions
(SED) with those predicted by radiative transfer accretion models of
YSOs.
Description:
The SED of 68 IRCs are extended beyond the GLIMPSE photometry to the
possible limits, from the near-infrared to the millimetre wavelengths,
by using the 2MASS, GLIMPSE version 2.0 catalogs, MSX, IRAS and some
single dish (and interferometric) (sub)mm data. An online SED fitting
tool that uses 2D radiative transfer accretion models of YSOs is
employed to fit the observed SED to obtain various physical
parameters.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 232 68 Parameters obtained for all the sources in our sample
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Source Source designation (1)
20- 26 I7 --- Best Best fitted model
28- 32 F5.2 --- chi2 chi2 per data point
34- 36 I3 mag AV Interstellar extinction
38- 40 I3 mag e_AV rms uncertainty on AV
42- 45 F4.2 [pc] d Distance of the star (log)
47- 50 F4.2 [pc] e_d rms uncertainty on d
52- 54 F3.1 [yr] Age Age of the star (log)
56- 58 F3.1 [yr] e_Age rms uncertainty on Age
60- 61 I2 [solMass] M* Mass of the star (log)
63 I1 [solMass] e_M* rms uncertainty on M*
65- 67 F3.1 [solRad] R* Radius of the star (log)
69- 71 F3.1 [solRad] e_R* rms uncertainty on R*
73- 75 F3.1 [K] T* Temperature of the star (log)
77- 79 F3.1 [K] e_T* rms uncertainty on T*
81- 84 F4.1 [solMass/yr] Mdot.E ?=- Envelope accretion rate (log)
86- 88 F3.1 [solMass/yr] e_Mdot.E ?=- rms uncertainty on Mdot.E
90- 92 F3.1 [AU] Rmax ?=- Envelope outer radius (log)
94- 96 F3.1 [AU] e_Rmax ?=- rms uncertainty on Rmax
98- 99 I2 deg theta ?=- Cavity opening angle
101-102 I2 deg e_theta ?=- uncertainty on theta
104-106 F3.1 --- Rin.E ?=- Envelope inner radius in
dust sublimation radius unit
108-110 F3.1 --- e_Rin.E ?=- rms uncertainty on Rin.E
112-115 F4.1 [solMass] M.D ?=- Disk mass (log)
117-119 F3.1 [solMass] e_M.D ?=- rms uncertainty on M.D
121-123 F3.1 [AU] Rmax.D ?=- Disk outer radius (log)
125-127 F3.1 [AU] e_Rmax.D ?=- rms uncertainty on RmaxD
129-131 F3.1 --- Rin.D ?=- Disk inner radius in
dust sublimation radius unit
133-135 F3.1 --- e_Rin.D ?=- rms uncertainty on Rin.D
137-140 F4.1 [AU] Rmin.D ?=- Disk inner radius (in AU) (log)
142-145 F4.1 [AU] e_Rmin.D ?=- rms uncertainty on RminDAU
147-150 F4.2 --- beta ?=- beta flaring parameter (2)
152-155 F4.2 --- e_beta ?=- rms uncertainty on beta (2)
157-161 F5.2 --- alpha ?=- Density profile exponent (2)
163-166 F4.2 --- e_alpha ?=- rms uncertainty on alpha (2)
168-172 F5.1 [g/cm3] rho0 ?=- Cavity density (log) (2)
174-176 F3.1 [g/cm3] e_rho0 ?=- rms uncertainty on rhoConst (2)
178-182 F5.1 [g/cm3] rhoAMB Ambient density (log)
184-186 F3.1 [g/cm3] e_rhoAMB ?=- rms uncertainty on rhoAMB
188-191 F4.1 [solMass/yr] Mdot.D ?=- Disk accretion rate (log)
193-195 F3.1 [solMass/yr] e_Mdot.D ?=- rms uncertainty on Mdot.D
197-200 F4.1 mag AVint Extinction to the stellar surface
202-204 F3.1 mag e_AVint rms uncertainty on AVint
206-208 F3.1 [solLum] Ltot Total system luminosity (log)
210-212 F3.1 [solLum] e_Ltot rms uncertainty on Ltot
214-217 F4.1 --- H100 ?=- Disk scaleheight at R=100AU
219-221 F3.1 --- e_H100 ?=- rms uncertainty on H100
223-224 I2 deg Incl Inclination of disk
226-227 I2 deg e_Incl rms uncertainty on Incl
229-232 I4 --- N ?=- Number of models fitted
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Note (1): Source name as , HHMMm+DDMMmmsN, HHMMm+DDMMmmsNfar, and
HHMMm+DDMMmmsNnear, where HHMMm+DDMMmmsNfar concerns far distance
parameters, and HHMMm+DDMMmmsNnear near distance parameters.
Note: Source name 14000-6104mm3 corrected into 14000-6104mms3.
Note (2): in a power-law model, i.e. ρ(r)=ρ0(r/R*)-α
and scale height h(r) = h0(r/R*)β
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History:
From electronic version of the journal
References:
Sridharan et al., 2002ApJ...566..931S 2002ApJ...566..931S
Kumar & Greve, Paper I 2007A&A...472..155K 2007A&A...472..155K
(End) Patricia Vannier [CDS] 02-Feb-2010