J/A+A/588/A108 Spectra of CO and [CI] in protoplanetary disks (Kama+, 2016)
Observations and modelling of CO and [C I] in protoplanetary disks.
First detections of [C I] and constraints on the carbon abundance.
Kama M., Bruderer S., Carney M., Hogerheijde M., van Dishoeck E.F.,
Fedele D., Baryshev A., Boland W., Gusten R., Aikutalp A., Choi Y.,
Endo A., Frieswijk W., Karska A., Klaassen P., Koumpia E., Kristensen L.,
Leurini S., Nagy Z., Perez Beaupuits J.-P., Risacher C., van der Marel N.,
van Kempen T.A., van Weeren R.J., Wyrowski F., Yildiz U.A.
<Astron. Astrophys. 588, A108 (2016)>
=2016A&A...588A.108K 2016A&A...588A.108K (SIMBAD/NED BibCode)
ADC_Keywords: YSOs ; Spectroscopy
Keywords: surveys - protoplanetary disks - submillimeter: planetary systems
Abstract:
The gas-solid budget of carbon in protoplanetary disks is related to
the composition of the cores and atmospheres of the planets forming in
them. The principal gas-phase carbon carriers CO, C0, and C^+6 can
now be observed regularly in disks.
The gas-phase carbon abundance in disks has thus far not been well
characterized observationally. We obtain new constraints on the
[C]/[H] ratio in a large sample of disks, and compile an overview of
the strength of [CI] and warm CO emission.
We carried out a survey of the CO 6-5 line and the [CI] 1-0 and 2-1
lines towards 37 disks with the APEX telescope, and supplemented it
with [CII] data from the literature. The data are interpreted using a
grid of models produced with the DALI disk code. We also investigate
how well the gas-phase carbon abundance can be determined in light of
parameter uncertainties.
Description:
APEX CHAMP+ and FLASH spectra of CI 1-0, CI 2-1, and CO 6-5 towards
protoplanetary disks.
The data was delivered from the telescope in reduced form and is on
the Ta (K) scale. Baselines have been subtracted with low-order
(order 0,1,2) polynomials. Observations were carried out from 2008
through 2013, with typical on-source exposure times of 10-60 min.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 132 75 List of fits spectra
sp/* . 75 Individual fits spectra
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 24 I5 --- Nx Number of pixels along X-axis
26- 48 A23 --- Obs.date Observation date
50- 61 E12.6 Hz bFreq Lower value of frequency interval
63- 73 E11.6 Hz BFreq Upper value of frequency interval
75- 82 F8.1 Hz dFreq Frequency resolution
84- 86 I3 Kibyte size Size of FITS file
88-106 A19 --- FileName Name of FITS file, in subdirectory sp
108-132 A25 --- Title Title of the FITS file
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Acknowledgements:
Mihkel Kama, mihkelkama(at)gmail.com
(End) Patricia Vannier [CDS] 05-Apr-2016