| DOI | Trouver le DOI : https://doi.org/10.3847/1538-4357/ab8ad4 |
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| Auteur | Rechercher : Baek, GiseonIdentifiant ORCID : https://orcid.org/0000-0002-2814-1978; Rechercher : Macfarlane, Benjamin A.; Rechercher : Lee, Jeong-EunIdentifiant ORCID : https://orcid.org/0000-0003-3119-2087; Rechercher : Stamatellos, DimitrisIdentifiant ORCID : https://orcid.org/0000-0002-4502-8344; Rechercher : Herczeg, Gregory; Rechercher : Johnstone, Doug1Identifiant ORCID : https://orcid.org/0000-0002-6773-459X; Rechercher : Peña, Carlos Contreras; Rechercher : Varricatt, Watson; Rechercher : Hodapp, Klaus W.Identifiant ORCID : https://orcid.org/0000-0003-0786-2140; Rechercher : Chen, Huei-Ru VivienIdentifiant ORCID : https://orcid.org/0000-0002-9774-1846; Rechercher : Kang, Sung-JuIdentifiant ORCID : https://orcid.org/0000-0002-5004-7216 |
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| Affiliation | - Conseil national de recherches du Canada. Herzberg en astronomie et en astrophysique
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| Format | Texte, Article |
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| Résumé | In the episodic accretion scenario, a large fraction of the protostellar mass accretes during repeated and large bursts of accretion. Since outbursts on protostars are typically identified at specific wavelengths, interpreting these outbursts requires converting this change in flux to a change in total luminosity. The Class I young stellar object EC 53 in the Serpens Main cloud has undergone repeated increases in brightness at 850 μm that are likely caused by bursts of accretion. In this study, we perform two- and three-dimensional continuum radiative transfer modeling to quantify the internal luminosity rise in EC 53 that corresponds to the factor of ∼1.5 enhancement in flux at 850 μm. We model the spectral energy distribution and radial intensity profile in both the quiescent and outburst phases. The internal luminosity in the outburst phase is ∼3.3 times brighter than the luminosity in the quiescent phase. The radial intensity profile analysis demonstrates that the detected submillimeter flux variation of EC 53 comes from the heated envelope by the accretion burst. We also find that the role of external heating of the EC 53 envelope by the interstellar radiation field is insignificant. |
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| Date de publication | 2020-05-20 |
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| Maison d’édition | IOP |
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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 | 000c1f43-aa69-4115-8594-c5574a41b817 |
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| Enregistrement créé | 2020-06-30 |
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| Enregistrement modifié | 2020-07-06 |
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