| DOI | Resolve DOI: https://doi.org/10.3847/1538-4357/ab8ad4 |
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| Author | Search for: Baek, GiseonORCID identifier: https://orcid.org/0000-0002-2814-1978; Search for: Macfarlane, Benjamin A.; Search for: Lee, Jeong-EunORCID identifier: https://orcid.org/0000-0003-3119-2087; Search for: Stamatellos, DimitrisORCID identifier: https://orcid.org/0000-0002-4502-8344; Search for: Herczeg, Gregory; Search for: Johnstone, Doug1ORCID identifier: https://orcid.org/0000-0002-6773-459X; Search for: Peña, Carlos Contreras; Search for: Varricatt, Watson; Search for: Hodapp, Klaus W.ORCID identifier: https://orcid.org/0000-0003-0786-2140; Search for: Chen, Huei-Ru VivienORCID identifier: https://orcid.org/0000-0002-9774-1846; Search for: Kang, Sung-JuORCID identifier: https://orcid.org/0000-0002-5004-7216 |
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| Affiliation | - National Research Council of Canada. Herzberg Astronomy and Astrophysics
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| Format | Text, Article |
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| Abstract | 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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| Publication date | 2020-05-20 |
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| Publisher | IOP |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 000c1f43-aa69-4115-8594-c5574a41b817 |
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| Record created | 2020-06-30 |
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| Record modified | 2020-07-06 |
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