| Téléchargement | - Voir la version finale : ALMA imaging of the M-dwarf Fomalhaut C’s debris disc (PDF, 4.3 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1093/mnras/stab1237 |
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| Auteur | Rechercher : Cronin-Coltsmann, Patrick F.Identifiant ORCID : https://orcid.org/0000-0002-5538-721X; Rechercher : Kennedy, Grant M.Identifiant ORCID : https://orcid.org/0000-0001-6831-7547; Rechercher : Kalas, Paul; Rechercher : Milli, JulienIdentifiant ORCID : https://orcid.org/0000-0001-9325-2511; Rechercher : Clarke, Cathie J.; Rechercher : Duchêne, GaspardIdentifiant ORCID : https://orcid.org/0000-0002-5092-6464; Rechercher : Greaves, JaneIdentifiant ORCID : https://orcid.org/0000-0002-3133-413X; Rechercher : Lawler, Samantha M.; Rechercher : Lestrade, Jean-François; Rechercher : Matthews, Brenda C.1; Rechercher : Shannon, Andrew; Rechercher : Wyatt, Mark C.Identifiant ORCID : https://orcid.org/0000-0001-9064-5598 |
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| Affiliation | - Conseil national de recherches du Canada. Herzberg en astronomie et en astrophysique
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| Bailleur de fonds | Rechercher : University of Warwick; Rechercher : Royal Society; Rechercher : NSF; Rechercher : NASA; Rechercher : Horizon 2020; Rechercher : STFC; Rechercher : ESO; Rechercher : NINS; Rechercher : National Research Council of Canada; Rechercher : MOST; Rechercher : KASI |
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| Format | Texte, Article |
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| Sujet | binaries: general; circumstellar matter; stars: individual: LP 876-10; stars: individual: Fomalhaut; submillimetre: planetary systems |
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| Résumé | Fomalhaut C (LP 876-10) is a low mass M4V star in the intriguing Fomalhaut triple system and, like Fomalhaut A, possesses a debris disc. It is one of very few nearby M-dwarfs known to host a debris disc and of these has by far the lowest stellar mass. We present new resolved observations of the debris disc around Fomalhaut C with the Atacama Large Millimetre Array that allow us to model its properties and investigate the system’s unique history. The ring has a radius of 26 au and a narrow full width at half-maximum of at most 4.2 au. We find a 3σ upper limit on the eccentricity of 0.14, neither confirming nor ruling out previous dynamic interactions with Fomalhaut A that could have affected Fomalhaut C’s disc. We detect no ¹²CO J = 3-2 emission in the system and do not detect the disc in scattered light with HST/STIS or VLT/SPHERE. We find the original Herschel detection to be consistent with our ALMA model’s radial size. We place the disc in the context of the wider debris disc population and find that its radius is as expected from previous disc radius-host luminosity trends. Higher signal-to-noise observations of the system would be required to further constrain the disc properties and provide further insight to the history of the Fomalhaut triple system as a whole. |
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| Date de publication | 2021-04-30 |
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| Maison d’édition | Oxford |
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| Licence | |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 09f5db03-3eda-47a8-b6b3-86660002bcf7 |
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| Enregistrement créé | 2022-09-06 |
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| Enregistrement modifié | 2023-03-16 |
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