Imaging the Jet of MWC 349A with Resolved Radio Recombination Line Emission from ALMA Article Swipe
Antonio Martínez-Henares
,
Qizhou Zhang
,
I. Jiménez-Serra
,
J. Martín‐Pintado
,
N. Huélamo
,
S. Prasad
,
J. M. Moran
,
A. Báez-Rubio
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.3847/2041-8213/ad638d
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.3847/2041-8213/ad638d
Jets and disk winds arise from materials with excess angular momentum ejected from the accretion disks in forming stars. How these structures are launched and how they impact the gas within the innermost regions of these objects remains poorly understood. MWC349A is a massive star that has a circumstellar disk that rotates in accord with Kepler’s Law, with an ionized wind and a high-velocity jet launched from the disk surface. The strongly maser-amplified emission of hydrogen radio recombination lines (RRLs) observed toward this system provides a comprehensive picture of its ionized environment with exquisite detail. In this Letter, we present Atacama Large Millimeter/submillimeter Array observations of the H26 α RRL and continuum emission obtained with the highest angular resolution ever used toward this source (beam of ∼0.″02). The maser RRL emission is resolved for the first time and clearly delineates the ionized disk, wind, and jet. We analyzed the RRL data cubes with the 3D non-LTE radiative transfer model MORELI, confirming that the jet is poorly collimated. We found that the jet orientation is closer to the rotation axis of the system than derived from spatially unresolved data. This study confirms that hydrogen RRL masers are powerful probes of the physical structure and kinematics of the innermost ionized material around massive stars.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3847/2041-8213/ad638d
- https://iopscience.iop.org/article/10.3847/2041-8213/ad638d/pdf
- OA Status
- gold
- Cited By
- 2
- References
- 44
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4401337141
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Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4401337141Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3847/2041-8213/ad638dDigital Object Identifier
- Title
-
Imaging the Jet of MWC 349A with Resolved Radio Recombination Line Emission from ALMAWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
-
2024Year of publication
- Publication date
-
2024-08-01Full publication date if available
- Authors
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Antonio Martínez-Henares, Qizhou Zhang, I. Jiménez-Serra, J. Martín‐Pintado, N. Huélamo, S. Prasad, J. M. Moran, A. Báez-RubioList of authors in order
- Landing page
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https://doi.org/10.3847/2041-8213/ad638dPublisher landing page
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https://iopscience.iop.org/article/10.3847/2041-8213/ad638d/pdfDirect link to full text PDF
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YesWhether a free full text is available
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goldOpen access status per OpenAlex
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https://iopscience.iop.org/article/10.3847/2041-8213/ad638d/pdfDirect OA link when available
- Concepts
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Physics, Maser, Astrophysics, Ionization, Radiative transfer, Stars, Astronomy, Jet (fluid), Angular momentum, Angular resolution (graph drawing), Ion, Optics, Classical mechanics, Mathematics, Thermodynamics, Quantum mechanics, CombinatoricsTop concepts (fields/topics) attached by OpenAlex
- Cited by
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2Total citation count in OpenAlex
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2025: 2Per-year citation counts (last 5 years)
- References (count)
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44Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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