Abundant sub-micron grains revealed in newly discovered extreme debris discs
dc.contributor.author | Moór, A | |
dc.contributor.author | Ábrahám, P | |
dc.contributor.author | Su, KYL | |
dc.contributor.author | Henning, T | |
dc.contributor.author | Marino, S | |
dc.contributor.author | Chen, L | |
dc.contributor.author | Kóspál, Á | |
dc.contributor.author | Pawellek, N | |
dc.contributor.author | Varga, J | |
dc.contributor.author | Vida, K | |
dc.date.accessioned | 2024-01-26T11:38:45Z | |
dc.date.issued | 2024-01-13 | |
dc.date.updated | 2024-01-26T11:14:34Z | |
dc.description.abstract | Extreme debris discs (EDDs) are bright and warm circumstellar dusty structures around main sequence stars. They may represent the outcome of giant collisions occuring in the terrestrial region between large planetesimals or planetary bodies, and thus provide a rare opportunity to peer into the aftermaths of these events. Here, we report on results of a mini-survey we conducted with the aim to increase the number of known EDDs, investigate the presence of solid-state features around 10 μm in eight EDDs, and classify them into the silica or silicate dominated groups. We identify four new EDDs and derive their fundamental properties. For these, and for four other previously known discs, we study the spectral energy distribution around 10 μm by means of VLT/VISIR photometryin three narrow-band filters and conclude that all eight objects likely exhibit solid-state emission features from sub-micron grains. We find that four discs probably belong to the silicate dominated subgroup. Considering the age distribution of the entire EDD sample, we find that their incidence begins to decrease only after 300 Myr, suggesting that the earlier common picture that these objects are related to the formation of rocky planets may not be exclusive, and that other processes may be involved for older objects (≳100 Myr). Because most of the older EDD systems have wide, eccentric companions, we suggest that binarity may play a role in triggering late giant collisions. | en_GB |
dc.description.sponsorship | Hungarian National Research, Development and Innovation Office | en_GB |
dc.description.sponsorship | Hungarian National Research, Development and Innovation Office | en_GB |
dc.description.sponsorship | Bolyai+ | en_GB |
dc.description.sponsorship | Royal Society | en_GB |
dc.description.sponsorship | NASA | en_GB |
dc.description.sponsorship | NASA | en_GB |
dc.description.sponsorship | Hungarian Academy of Sciences | en_GB |
dc.format.extent | stae155- | |
dc.identifier.citation | Published online 13 January 2024 | en_GB |
dc.identifier.doi | https://doi.org/10.1093/mnras/stae155 | |
dc.identifier.grantnumber | OTKA K131508 | en_GB |
dc.identifier.grantnumber | KKP-143986. | en_GB |
dc.identifier.grantnumber | ÚNKP-22-5-ELTE-1093 | en_GB |
dc.identifier.grantnumber | URFR1-221669 | en_GB |
dc.identifier.grantnumber | NNX17AF03G | en_GB |
dc.identifier.grantnumber | 80NSSC20K1002 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/135146 | |
dc.language.iso | en | en_GB |
dc.publisher | Oxford University Press / Royal Astronomical Society | en_GB |
dc.relation.url | http://archive.eso.org/eso/eso_archive_main. html | en_GB |
dc.rights | © The Author(s) 2024. Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. | en_GB |
dc.subject | circumstellar matter | en_GB |
dc.subject | infrared: planetary systems | en_GB |
dc.subject | stars: individual: TYC 5940-1510-1, TYC 8105-310-1, TYC 4946-1106-1, J060917.00-150808.5, J071206.54-475242.3, J092521.90-673224.8, J104416.70- 451613.9, J204315.23+104335.3 | en_GB |
dc.title | Abundant sub-micron grains revealed in newly discovered extreme debris discs | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2024-01-26T11:38:45Z | |
dc.identifier.issn | 0035-8711 | |
dc.description | This is the author accepted manuscript. The final version is available from Oxford University Press via the DOI in this record | en_GB |
dc.description | DATA AVAILABILITY: The VISIR data used in this paper are publicly available at ESO Archive (http://archive.eso.org/eso/eso_archive_main. html). | en_GB |
dc.identifier.eissn | 1365-2966 | |
dc.identifier.journal | Monthly Notices of the Royal Astronomical Society | en_GB |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2024 | |
rioxxterms.version | AM | en_GB |
rioxxterms.licenseref.startdate | 2024-01-13 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2024-01-26T11:28:08Z | |
refterms.versionFCD | AM | |
refterms.dateFOA | 2024-01-26T11:38:46Z | |
refterms.panel | B | en_GB |
refterms.dateFirstOnline | 2024-01-13 |
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Except where otherwise noted, this item's licence is described as © The Author(s) 2024. Published by Oxford University Press on behalf of Royal Astronomical Society.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.