An Outbursting Protostar: The Environment of L1251 VLA 6
Young protostars that undergo episodic accretion can provide insight into the impact on their circumstellar environments while matter is accreted from the disk onto the protostar. IRAS 22343+7501 is a four-component protostar system with one of those being a fading outbursting protostar, which was o...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ad2167 |
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| author | Ava Nederlander Adele Plunkett Antonio Hales Ágnes Kóspál Jacob A. White Makoto A. Johnstone Mária Kun Péter Ábrahám Anna G. Hughes |
| author_facet | Ava Nederlander Adele Plunkett Antonio Hales Ágnes Kóspál Jacob A. White Makoto A. Johnstone Mária Kun Péter Ábrahám Anna G. Hughes |
| author_sort | Ava Nederlander |
| collection | DOAJ |
| description | Young protostars that undergo episodic accretion can provide insight into the impact on their circumstellar environments while matter is accreted from the disk onto the protostar. IRAS 22343+7501 is a four-component protostar system with one of those being a fading outbursting protostar, which was obseved with the Karl G. Jansky Very Large Array (VLA) and is referred to as L1251 VLA 6. Given the rarity of young stellar objects undergoing this type of accretion, L1251 VLA 6 can elucidate the fading phase of the post-outburst process. Here, we examine structure in the disk around L1251 VLA 6 at frequencies of 10 and 33 GHz with the VLA. We model the disk structure using Markov Chain Monte Carlo (MCMC). This method is then combined with a parametric ray-tracing code to generate synthetic model images of an axisymmetric disk, allowing us to characterize the radial distribution of dust in the system. The results of our MCMC fit show that the most probable values for the mass and radius are consistent with values typical of Class I objects. We find that the total mass of the disk is ${0.070}_{-0.2}^{+0.031}\,{M}_{\odot }$ and investigate the conditions that could cause the accretion outburst. We conclude that the eruption is not caused by gravitational instability and consider alternative explanations and trigger mechanisms. |
| first_indexed | 2024-04-24T23:53:58Z |
| format | Article |
| id | doaj.art-617fe4d393a34ae49484a5c4f603bacb |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-04-24T23:53:58Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-617fe4d393a34ae49484a5c4f603bacb2024-03-14T14:33:45ZengIOP PublishingThe Astrophysical Journal1538-43572024-01-0196414910.3847/1538-4357/ad2167An Outbursting Protostar: The Environment of L1251 VLA 6Ava Nederlander0https://orcid.org/0000-0002-4884-665XAdele Plunkett1https://orcid.org/0000-0002-9912-5705Antonio Hales2https://orcid.org/0000-0001-5073-2849Ágnes Kóspál3https://orcid.org/0000-0001-7157-6275Jacob A. White4https://orcid.org/0000-0001-8445-0444Makoto A. Johnstone5https://orcid.org/0000-0001-7690-3976Mária Kun6https://orcid.org/0000-0002-7538-5166Péter Ábrahám7https://orcid.org/0000-0001-6015-646XAnna G. Hughes8https://orcid.org/0000-0002-3446-0289Astronomy Department and Van Vleck Observatory, Wesleyan University , Middletown, CT 06459, USA; Department of Electrical and Computer Engineering, Stony Brook University , Stony Brook, NY 11794-3800, USANational Radio Astronomy Observatory , 520 Edgemont Road Charlottesville, VA 22903, USANational Radio Astronomy Observatory , 520 Edgemont Road Charlottesville, VA 22903, USA; Joint ALMA Observatory , Avenida Alonso de Córdova 3107, Vitacura 7630355, Santiago, ChileKonkoly Observatory, HUN-REN Research Centre for Astronomy and Earth Sciences , Konkoly Thege Miklós út 15-17, H-1121 Budapest, Hungary; Max Planck Institute for Astronomy , Königstuhl 17, D-69117 Heidelberg, Germany; ELTE Eötvös Loránd University , Institute of Physics, Pázmány Péter sétány 1/A, 1117 Budapest, Hungary; CSFK, MTA Centre of Excellence , Konkoly-Thege Miklós út 15-17, 1121 Budapest, HungaryNational Radio Astronomy Observatory , 520 Edgemont Road Charlottesville, VA 22903, USA; EarthDaily Analytics , 1055 Canada Pl #33, Vancouver, BC, V6C 3L5, CanadaDepartment of Physics, Middlebury College , Middlebury, VT 05753, USAKonkoly Observatory, HUN-REN Research Centre for Astronomy and Earth Sciences , Konkoly Thege Miklós út 15-17, H-1121 Budapest, Hungary; CSFK, MTA Centre of Excellence , Konkoly-Thege Miklós út 15-17, 1121 Budapest, HungaryKonkoly Observatory, HUN-REN Research Centre for Astronomy and Earth Sciences , Konkoly Thege Miklós út 15-17, H-1121 Budapest, Hungary; ELTE Eötvös Loránd University , Institute of Physics, Pázmány Péter sétány 1/A, 1117 Budapest, Hungary; CSFK, MTA Centre of Excellence , Konkoly-Thege Miklós út 15-17, 1121 Budapest, Hungary; Department of Astrophysics, University of Vienna , Türkenschanzstr 17, A-1180 Vienna, AustriaEntanglement, Inc. , 109 Greene St, New York, NY 10012, USAYoung protostars that undergo episodic accretion can provide insight into the impact on their circumstellar environments while matter is accreted from the disk onto the protostar. IRAS 22343+7501 is a four-component protostar system with one of those being a fading outbursting protostar, which was obseved with the Karl G. Jansky Very Large Array (VLA) and is referred to as L1251 VLA 6. Given the rarity of young stellar objects undergoing this type of accretion, L1251 VLA 6 can elucidate the fading phase of the post-outburst process. Here, we examine structure in the disk around L1251 VLA 6 at frequencies of 10 and 33 GHz with the VLA. We model the disk structure using Markov Chain Monte Carlo (MCMC). This method is then combined with a parametric ray-tracing code to generate synthetic model images of an axisymmetric disk, allowing us to characterize the radial distribution of dust in the system. The results of our MCMC fit show that the most probable values for the mass and radius are consistent with values typical of Class I objects. We find that the total mass of the disk is ${0.070}_{-0.2}^{+0.031}\,{M}_{\odot }$ and investigate the conditions that could cause the accretion outburst. We conclude that the eruption is not caused by gravitational instability and consider alternative explanations and trigger mechanisms.https://doi.org/10.3847/1538-4357/ad2167ProtostarsYoung stellar objectsStellar accretionCircumstellar disks |
| spellingShingle | Ava Nederlander Adele Plunkett Antonio Hales Ágnes Kóspál Jacob A. White Makoto A. Johnstone Mária Kun Péter Ábrahám Anna G. Hughes An Outbursting Protostar: The Environment of L1251 VLA 6 The Astrophysical Journal Protostars Young stellar objects Stellar accretion Circumstellar disks |
| title | An Outbursting Protostar: The Environment of L1251 VLA 6 |
| title_full | An Outbursting Protostar: The Environment of L1251 VLA 6 |
| title_fullStr | An Outbursting Protostar: The Environment of L1251 VLA 6 |
| title_full_unstemmed | An Outbursting Protostar: The Environment of L1251 VLA 6 |
| title_short | An Outbursting Protostar: The Environment of L1251 VLA 6 |
| title_sort | outbursting protostar the environment of l1251 vla 6 |
| topic | Protostars Young stellar objects Stellar accretion Circumstellar disks |
| url | https://doi.org/10.3847/1538-4357/ad2167 |
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