J/A+A/594/A85 2D disk models from CO isotopologues line (Miotello+, 2016)
Determining protoplanetary disk gas masses from CO isotopologues line
observations.
Miotello A., van Dishoeck E.F., Kama M., Bruderer S.
<Astron. Astrophys. 594, A85 (2016)>
=2016A&A...594A..85M 2016A&A...594A..85M (SIMBAD/NED BibCode)
ADC_Keywords: Models ; Abundances ; Stars, pre-main sequence
Keywords: protoplanetary disks - astrochemistry - radiative transfer
Abstract:
Despite intensive studies of protoplanetary disks, there is still no
reliable way to determine their total (gast+dust) mass and their
surface density distribution, quantities that are crucial for
describing both the structure and the evolution of disks up to the
formation of planets.
The goal of this work is to use less abundant CO isotopologues, such
as 13CO, C18O and C17O, whose detection is routine for ALMA, to
infer the gas mass of disks. Isotope-selective ects need to be taken
into account in the analysis, because they can significantly modify CO
isotopologues line intensities.
CO isotope-selective photodissociation has been implemented in the
physical-chemical code DALI (Dust And LInes) and more than 800 disk
models have been run for a range of disk and stellar parameters. Dust
and gas temperature structures have been computed self-consistently,
together with a chemical calculation of the main atomic and molecular
species. Both disk structure and stellar parameters have been
investigated by varying the parameters in the grid of models. Total
fluxes have been ray-traced for different CO isotopologues and for
various low J- transitions for different inclinations.
Description:
In this work 2D disk models have been run to relate gas mass to CO
isotopologues emission. Our models are computed using the
physical-chemical code DALI.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea4.dat 353 210 Parameters of the T Tauri models and simulated
intensities assuming a distance d=100pc and
a beam size of 10"
tablea5.dat 353 210 Parameters of the Herbig models and simulated
intensities assuming a distance d=100pc and
a beam size of 10"
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Byte-by-byte Description of file: tablea4.dat tablea5.dat
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Bytes Format Units Label Explanations
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1- 5 F5.1 AU Rc Critical radius
7- 9 F3.1 --- gamma Power-law index of the surface density
11- 13 F3.1 rad hc Scale height angle
15- 17 F3.1 --- psi Disk flaring
19- 25 F7.5 Msun Mdisk Total disk mass
27- 33 F7.5 K I870um10 Continuum intensity @ 870 micron,
with disk inclination i=10°
35- 41 F7.5 K I870um80 Continuum intensity @ 870 micron,
with disk inclination i=80°
43- 50 F8.5 K.km/s I12CO(1-0)10 12CO(1-0) line intensity, with disk
inclination i=10° (1)
52- 59 F8.5 K.km/s I12CO(1-0)80 12CO(1-0) line intensity, with disk
inclination i=80° (1)
61- 68 F8.5 K.km/s I12CO(2-1)10 12CO(2-1) line intensity, with disk
inclination i=10° (1)
70- 77 F8.5 K.km/s I12CO(2-1)80 12CO(2-1) line intensity, with disk
inclination i=80° (1)
79- 86 F8.5 K.km/s I12CO(3-2)10 12CO(3-2) line intensity, with disk
inclination i=10° (1)
88- 95 F8.5 K.km/s I12CO(3-2)80 12CO(3-2) line intensity, with disk
inclination i=80° (1)
97-104 F8.5 K.km/s I12CO(6-5)10 12CO(6-5) line intensity, with disk
inclination i=10° (1)
106-113 F8.5 K.km/s I12CO(6-5)80 12CO(6-5) line intensity, with disk
inclination i=80° (1)
115-122 F8.5 K.km/s I13CO(1-0)10 13CO(1-0) line intensity, with disk
inclination i=10° (1)
124-131 F8.5 K.km/s I13CO(1-0)80 13CO(1-0) line intensity, with disk
inclination i=80° (1)
133-140 F8.5 K.km/s I13CO(2-1)10 13CO(2-1) line intensity, with disk
inclination i=10° (1)
142-149 F8.5 K.km/s I13CO(2-1)80 13CO(2-1) line intensity, with disk
inclination i=80° (1)
151-158 F8.5 K.km/s I13CO(3-2)10 13CO(3-2) line intensity, with disk
inclination i=10° (1)
160-167 F8.5 K.km/s I13CO(3-2)80 13CO(3-2) line intensity, with disk
inclination i=80° (1)
169-176 F8.5 K.km/s I13CO(6-5)10 13CO(6-5) line intensity, with disk
inclination i=10° (1)
178-185 F8.5 K.km/s I13CO(6-5)80 13CO(6-5) line intensity, with disk
inclination i=80° (1)
187-193 F7.5 K.km/s IC18O(1-0)10 C18O(1-0) line intensity, with disk
inclination i=10° (1)
195-202 F8.5 K.km/s IC18O(1-0)80 C18O(1-0) line intensity, with disk
inclination i=80° (1)
204-210 F7.5 K.km/s IC18O(2-1)10 C18O(2-1) line intensity, with disk
inclination i=10° (1)
212-219 F8.5 K.km/s IC18O(2-1)80 C18O(2-1) line intensity, with disk
inclination i=80° (1)
221-227 F7.5 K.km/s IC18O(3-2)10 C18O(3-2) line intensity, with disk
inclination i=10° (1)
229-236 F8.5 K.km/s IC18O(3-2)80 C18O(3-2) line intensity, with disk
inclination i=80° (1)
238-244 F7.5 K.km/s IC18O(6-5)10 C18O(6-5) line intensity, with disk
inclination i=10° (1)
246-253 F8.5 K.km/s IC18O(6-5)80 C18O(6-5) line intensity, with disk
inclination i=80° (1)
255-261 F7.5 K.km/s IC17O(1-0)10 C17O(1-0) line intensity, with disk
inclination i=10° (1)
263-270 F8.5 K.km/s IC17O(1-0)80 C17O(1-0) line intensity, with disk
inclination i=80° (1)
272-278 F7.5 K.km/s IC17O(2-1)10 C17O(2-1) line intensity, with disk
inclination i=10° (1)
280-287 F8.5 K.km/s IC17O(2-1)80 C17O(2-1) line intensity, with disk
inclination i=80° (1)
289-295 F7.5 K.km/s IC17O(3-2)10 C17O(3-2) line intensity, with disk
inclination i=10° (1)
297-304 F8.5 K.km/s IC17O(3-2)80 C17O(3-2) line intensity, with disk
inclination i=80° (1)
306-312 F7.5 K.km/s IC17O(6-5)10 C17O(6-5) line intensity, with disk
inclination i=10° (1)
314-321 F8.5 K.km/s IC17O(6-5)80 C17O(6-5) line intensity, with disk
inclination i=80° (1)
323-329 F7.5 K.km/s I[CI](3P1-3P0)10 Line intensity of [CI](3P1-3P0),
with disk inclination i=10° (1)
331-337 F7.5 K.km/s I[CI](3P1-3P0)80 Line intensity of [CI](3P1-3P0),
with disk inclination i=80° (1)
339-345 F7.5 K.km/s I[CI](3P2-3P1)10 Line intensity of [CI](3P2-3P1),
with disk inclination i=10° (1)
347-353 F7.5 K.km/s I[CI](3P2-3P1)80 Line intensity of [CI](3P2-3P1),
with disk inclination i=80° (1)
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Note (1): Line intensities are continuum subtracted.
The conversion between intensity in units of Kelvin and flux is reported in
Appendix B of Bruderer (2013A&A...559A..46B 2013A&A...559A..46B).
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Acknowledgements:
Anna Miotello, miotello(at)strw.leidenuniv.nl
(End) Patricia Vannier [CDS] 31-May-2016