Forgan, D. H., Rowlands, K., Gomez, Haley ORCID: https://orcid.org/0000-0003-3398-0052, Gomez, Edward ORCID: https://orcid.org/0000-0001-5749-1507, Schofield, S. P., Dunne, Loretta ORCID: https://orcid.org/0000-0001-9880-2543 and Maddox, Steve ORCID: https://orcid.org/0000-0001-5549-195X 2017. Can planet formation resolve the dust budget crisis in high redshift galaxies? Monthly Notices of the Royal Astronomical Society 472 (2) , pp. 2289-2296. 10.1093/MNRAS/STX2162 |
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Abstract
The process of planet formation offers a rich source of dust production via grain growth in protostellar discs, and via grinding of larger bodies in debris disc systems. Chemical evolution models, designed to follow the build up of metals and dust in galaxies, do not currently account for planet formation. We consider the possibility that the apparent under-prediction of dust mass in high redshift galaxies by chemical evolution models could be in part, due to these models neglecting this process, specifically due to their assumption that a large fraction of the dust mass is removed from the interstellar medium during star formation (so-called astration). By adding a planet formation phase into galaxy chemical evolution, we demonstrate that the dust budget crisis can be partially ameliorated by a factor of 1.3-1.5 only if a)circumstellar discs prevent a large fraction of the dust mass entering the star during its birth, and b) that dust mass is preferentially liberated via jets, winds and outflows rather than accreted into planetary-mass bodies.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
Publisher: | Oxford University Press |
ISSN: | 0035-8711 |
Date of First Compliant Deposit: | 24 August 2017 |
Date of Acceptance: | 21 August 2017 |
Last Modified: | 12 Nov 2023 19:36 |
URI: | https://orca.cardiff.ac.uk/id/eprint/103928 |
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