J/other/NatAs/5.684 CH3OH in the HD100546 disk (Booth+, 2021)
An inherited complex organic molecule reservoir in a warm planet-hosting disk.
Booth A.S., Walsh C., Terwisscha van Scheltinga J., van Dishoeck E.F.,
Ilee J.D., Hogerheijde M.R., Kama M., Nomura H.
<Nature Astronomy, 5, 684-690 (2021)>
=2021NatAs...5..684B 2021NatAs...5..684B (SIMBAD/NED BibCode)
ADC_Keywords: Stars, A-type ; Interstellar medium
Abstract:
Quantifying the composition of the material in protoplanetary disks is
paramount to determining the potential for exoplanetary systems to
produce and support habitable environments. When considering potential
habitability, complex organic molecules are of relevance, key among
which is methanol (CH3OH). Methanol primarily forms at low
temperatures via the hydrogenation of CO ice on the surface of icy
dust grains and is a necessary basis for the formation of more complex
species such as amino acids and proteins. We report the detection of
CH3OH in a disk around a young, luminous A-type star, HD 100546. This
disk is warm and therefore does not host an abundant reservoir of CO
ice. We argue that the CH3OH cannot form in situ, and hence this disk
has probably inherited complex-organic-molecule-rich ice from an
earlier cold dark cloud phase. This is strong evidence that at least
some interstellar organic material survives the disk formation process
and can then be incorporated into forming planets, moons and comets.
Therefore, crucial pre-biotic chemical evolution already takes place
in dark star-forming clouds.
Description:
Channel maps of line data presented in the paper where XXX_XXX denotes
the specific transition of the molecule contained in the channel maps.
For full details see the paper.
Objects:
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RA (2000) DE Designation(s)
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11 33 25.44 -70 11 41.2 HD 100546 = HIP 56379
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 186 6 List of fits datacubes
fits/* . 6 Individual fits datacubes
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See also:
J/A+A/592/A83 : HD 100546 and TW Hya model abundances (Kama+, 2016)
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- 22 I3 --- Nx Number of pixels along X-axis
24- 26 I3 --- Ny Number of pixels along Y-axis
28- 30 I3 --- Nz Number of slices
32- 52 A21 "datime" Obs.date Observation date
54- 60 F7.3 GHz bFreq Lower value of frequency interval
62- 68 F7.3 GHz BFreq Upper value of frequency interval
70- 75 I6 Hz dFreq Frequency resolution
77- 81 I5 Kibyte size Size of FITS file
83-121 A39 --- FileName Name of FITS file, in subdirectory fits
123-186 A64 --- Title Title of the FITS file
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Acknowledgements:
Alice Booth, abooth(at)strw.leidenuniv.nl
(End) Patricia Vannier [CDS] 12-Apr-2021