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Article: A high-resolution radio study of the L1551 IRS 5 and L1551 NE jets
Title | A high-resolution radio study of the L1551 IRS 5 and L1551 NE jets |
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Authors | |
Keywords | Outflows Radiation mechanisms: Thermal Radio continuum: Stars Stars: Formation Stars: Low-mass Stars: Winds |
Issue Date | 19-Jul-2023 |
Publisher | EDP Sciences |
Citation | Astronomy & Astrophysics, 2023, v. 677 How to Cite? |
Abstract | Using observations with e-MERLIN and the Karl G. Jansky Very Large Array (VLA), together with archival data from the Atacama Large Millimeter/submillimeter Array (ALMA), we obtain high-resolution radio images of two binary YSOs: L1551 IRS 5 and L1551 NE, covering a wide range of frequencies from 5 to 336 GHz, and resolving emission from the radio jet on scales of only ∼15 au. By comparing these observations to those from a previous epoch, it is shown that there is a high degree of variability in the free-free emission from the jets of these sources. In particular, the northern component of L1551 IRS 5 shows a remarkable decline in flux density of a factor of ∼5, suggesting that the free-free emission of this source has almost disappeared. By fitting the spectra of the sources, the ionised mass-loss rates of the jets were derived and it was shown that there is significant variability of up to a factor of ∼6 on timescales of ∼20 years. Using radiative transfer modelling, we also obtained a model image for the jet of the southern component of L1551 IRS 5 to help study the inner region of the ionised high-density jet. The findings favour the X-wind model launched from a very small innermost region. |
Persistent Identifier | http://hdl.handle.net/10722/338146 |
ISSN | 2021 Impact Factor: 6.240 2020 SCImago Journal Rankings: 2.137 |
DC Field | Value | Language |
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dc.contributor.author | Feeney-Johansson, A | - |
dc.contributor.author | Purser, SJD | - |
dc.contributor.author | Ray, TP | - |
dc.contributor.author | Carrasco-González, C | - |
dc.contributor.author | Rodríguez-Kamenetzky, A | - |
dc.contributor.author | Eislöffel, J | - |
dc.contributor.author | Lim, J | - |
dc.contributor.author | Galván-Madrid, R | - |
dc.contributor.author | Lizano, S | - |
dc.contributor.author | Rodríguez, L F | - |
dc.contributor.author | Shang, H | - |
dc.contributor.author | Ho, P | - |
dc.contributor.author | Hoare, M | - |
dc.date.accessioned | 2024-03-11T10:26:36Z | - |
dc.date.available | 2024-03-11T10:26:36Z | - |
dc.date.issued | 2023-07-19 | - |
dc.identifier.citation | Astronomy & Astrophysics, 2023, v. 677 | - |
dc.identifier.issn | 0004-6361 | - |
dc.identifier.uri | http://hdl.handle.net/10722/338146 | - |
dc.description.abstract | <p>Using observations with e-MERLIN and the <em>Karl G. Jansky</em> Very Large Array (VLA), together with archival data from the Atacama Large Millimeter/submillimeter Array (ALMA), we obtain high-resolution radio images of two binary YSOs: L1551 IRS 5 and L1551 NE, covering a wide range of frequencies from 5 to 336 GHz, and resolving emission from the radio jet on scales of only ∼15 au. By comparing these observations to those from a previous epoch, it is shown that there is a high degree of variability in the free-free emission from the jets of these sources. In particular, the northern component of L1551 IRS 5 shows a remarkable decline in flux density of a factor of ∼5, suggesting that the free-free emission of this source has almost disappeared. By fitting the spectra of the sources, the ionised mass-loss rates of the jets were derived and it was shown that there is significant variability of up to a factor of ∼6 on timescales of ∼20 years. Using radiative transfer modelling, we also obtained a model image for the jet of the southern component of L1551 IRS 5 to help study the inner region of the ionised high-density jet. The findings favour the X-wind model launched from a very small innermost region.</p> | - |
dc.language | eng | - |
dc.publisher | EDP Sciences | - |
dc.relation.ispartof | Astronomy & Astrophysics | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Outflows | - |
dc.subject | Radiation mechanisms: Thermal | - |
dc.subject | Radio continuum: Stars | - |
dc.subject | Stars: Formation | - |
dc.subject | Stars: Low-mass | - |
dc.subject | Stars: Winds | - |
dc.title | A high-resolution radio study of the L1551 IRS 5 and L1551 NE jets | - |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/202346737 | - |
dc.identifier.scopus | eid_2-s2.0-85172347562 | - |
dc.identifier.volume | 677 | - |
dc.identifier.eissn | 1432-0746 | - |
dc.identifier.issnl | 0004-6361 | - |