Booth, AS;
Walsh, C;
Terwisscha van Scheltinga, J;
van Dishoeck, EF;
Ilee, JD;
Hogerheijde, MR;
Kama, M;
(2021)
An inherited complex organic molecule reservoir in a warm planet-hosting disk.
Nature Astronomy
, 5
pp. 684-690.
10.1038/s41550-021-01352-w.
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Abstract
Quantifying the composition of the material in protoplanetary disks is essential to determining the potential for exoplanetary systems to produce and support habitable environments. When considering potential habitability, complex organic molecules are relevant, 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 that 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.
| Type: | Article |
|---|---|
| Title: | An inherited complex organic molecule reservoir in a warm planet-hosting disk |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1038/s41550-021-01352-w |
| Publisher version: | https://doi.org/10.1038/s41550-021-01352-w |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Astronomy & Astrophysics, YOUNG STELLAR OBJECTS, PROTOPLANETARY DISK, CHEMICAL-PROCESSES, FORMING REGIONS, 1ST DETECTIONS, CHEMISTRY, CO, METHANOL, LINE, SPECTROSCOPY |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10138723 |
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