A Disk Wind Driving the Rotating Molecular Outflow in CB 26
We present the ^12 CO ( J = 2–1) sensitive molecular line and 1.3 mm continuum observations from the Submillimeter Array (SMA) of the bipolar outflow associated with the young star located in the Bok globule known as CB 26. The SMA observations were carried out in its extended configuration allowing...
Ausführliche Beschreibung
Autor*in: |
J. A. López-Vázquez [verfasserIn] Luis A. Zapata [verfasserIn] Chin-Fei Lee [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2023 |
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Übergeordnetes Werk: |
In: The Astrophysical Journal - IOP Publishing, 2022, 944(2023), 1, p 63 |
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Übergeordnetes Werk: |
volume:944 ; year:2023 ; number:1, p 63 |
Links: |
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DOI / URN: |
10.3847/1538-4357/acb439 |
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Katalog-ID: |
DOAJ089160444 |
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520 | |a We present the ^12 CO ( J = 2–1) sensitive molecular line and 1.3 mm continuum observations from the Submillimeter Array (SMA) of the bipolar outflow associated with the young star located in the Bok globule known as CB 26. The SMA observations were carried out in its extended configuration allowing us to study the kinematics and structure of the outflow with about 1″ or 140 au resolution. We find that the dusty and edge-on circumstellar disk related to the outflow has a projected spatial (deconvolved) size of 196 ± 31 × 42 ± 29 au with a total (gas+dust) mass of 0.031 ± 0.015 M _⊙ . We estimated a dynamical mass for the central object of 0.66 ± 0.03 M _⊙ , and the mass of the molecular outflow of 5 ± 1.5 × 10 ^−5 M _⊙ . All these values are consistent with recent estimations. The observations confirm that the outflow rotation has a similar orientation to that of the edge-on disk. For the outflow, we find that the following quantities: the rotation velocity (∼1–3 km s ^−1 ), specific angular momentum (∼200–700 au km s ^−1 ), and launching radius (∼15–35 au) decrease with the height above the midplane, as observed in other molecular rotating outflows. The radius (∼180–280 au) and expansion velocity (∼2–4 km s ^−1 ) also increase with the height above the disk midplane for z < 0 au; however, for z < 0 au these quantities do not exhibit this behavior. Estimations of the outflow linear momentum rate, outflow angular momentum rate, and accretion luminosity seem to be well explained by the presence of a disk wind in CB 26. | ||
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10.3847/1538-4357/acb439 doi (DE-627)DOAJ089160444 (DE-599)DOAJ5b2398a14dc443c082fd20dd992a4ef7 DE-627 ger DE-627 rakwb eng QB460-466 J. A. López-Vázquez verfasserin aut A Disk Wind Driving the Rotating Molecular Outflow in CB 26 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present the ^12 CO ( J = 2–1) sensitive molecular line and 1.3 mm continuum observations from the Submillimeter Array (SMA) of the bipolar outflow associated with the young star located in the Bok globule known as CB 26. The SMA observations were carried out in its extended configuration allowing us to study the kinematics and structure of the outflow with about 1″ or 140 au resolution. We find that the dusty and edge-on circumstellar disk related to the outflow has a projected spatial (deconvolved) size of 196 ± 31 × 42 ± 29 au with a total (gas+dust) mass of 0.031 ± 0.015 M _⊙ . We estimated a dynamical mass for the central object of 0.66 ± 0.03 M _⊙ , and the mass of the molecular outflow of 5 ± 1.5 × 10 ^−5 M _⊙ . All these values are consistent with recent estimations. The observations confirm that the outflow rotation has a similar orientation to that of the edge-on disk. For the outflow, we find that the following quantities: the rotation velocity (∼1–3 km s ^−1 ), specific angular momentum (∼200–700 au km s ^−1 ), and launching radius (∼15–35 au) decrease with the height above the midplane, as observed in other molecular rotating outflows. The radius (∼180–280 au) and expansion velocity (∼2–4 km s ^−1 ) also increase with the height above the disk midplane for z < 0 au; however, for z < 0 au these quantities do not exhibit this behavior. Estimations of the outflow linear momentum rate, outflow angular momentum rate, and accretion luminosity seem to be well explained by the presence of a disk wind in CB 26. Star formation Stellar winds Astrophysics Luis A. Zapata verfasserin aut Chin-Fei Lee verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 944(2023), 1, p 63 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:944 year:2023 number:1, p 63 https://doi.org/10.3847/1538-4357/acb439 kostenfrei https://doaj.org/article/5b2398a14dc443c082fd20dd992a4ef7 kostenfrei https://doi.org/10.3847/1538-4357/acb439 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 944 2023 1, p 63 |
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10.3847/1538-4357/acb439 doi (DE-627)DOAJ089160444 (DE-599)DOAJ5b2398a14dc443c082fd20dd992a4ef7 DE-627 ger DE-627 rakwb eng QB460-466 J. A. López-Vázquez verfasserin aut A Disk Wind Driving the Rotating Molecular Outflow in CB 26 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present the ^12 CO ( J = 2–1) sensitive molecular line and 1.3 mm continuum observations from the Submillimeter Array (SMA) of the bipolar outflow associated with the young star located in the Bok globule known as CB 26. The SMA observations were carried out in its extended configuration allowing us to study the kinematics and structure of the outflow with about 1″ or 140 au resolution. We find that the dusty and edge-on circumstellar disk related to the outflow has a projected spatial (deconvolved) size of 196 ± 31 × 42 ± 29 au with a total (gas+dust) mass of 0.031 ± 0.015 M _⊙ . We estimated a dynamical mass for the central object of 0.66 ± 0.03 M _⊙ , and the mass of the molecular outflow of 5 ± 1.5 × 10 ^−5 M _⊙ . All these values are consistent with recent estimations. The observations confirm that the outflow rotation has a similar orientation to that of the edge-on disk. For the outflow, we find that the following quantities: the rotation velocity (∼1–3 km s ^−1 ), specific angular momentum (∼200–700 au km s ^−1 ), and launching radius (∼15–35 au) decrease with the height above the midplane, as observed in other molecular rotating outflows. The radius (∼180–280 au) and expansion velocity (∼2–4 km s ^−1 ) also increase with the height above the disk midplane for z < 0 au; however, for z < 0 au these quantities do not exhibit this behavior. Estimations of the outflow linear momentum rate, outflow angular momentum rate, and accretion luminosity seem to be well explained by the presence of a disk wind in CB 26. Star formation Stellar winds Astrophysics Luis A. Zapata verfasserin aut Chin-Fei Lee verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 944(2023), 1, p 63 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:944 year:2023 number:1, p 63 https://doi.org/10.3847/1538-4357/acb439 kostenfrei https://doaj.org/article/5b2398a14dc443c082fd20dd992a4ef7 kostenfrei https://doi.org/10.3847/1538-4357/acb439 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 944 2023 1, p 63 |
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10.3847/1538-4357/acb439 doi (DE-627)DOAJ089160444 (DE-599)DOAJ5b2398a14dc443c082fd20dd992a4ef7 DE-627 ger DE-627 rakwb eng QB460-466 J. A. López-Vázquez verfasserin aut A Disk Wind Driving the Rotating Molecular Outflow in CB 26 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present the ^12 CO ( J = 2–1) sensitive molecular line and 1.3 mm continuum observations from the Submillimeter Array (SMA) of the bipolar outflow associated with the young star located in the Bok globule known as CB 26. The SMA observations were carried out in its extended configuration allowing us to study the kinematics and structure of the outflow with about 1″ or 140 au resolution. We find that the dusty and edge-on circumstellar disk related to the outflow has a projected spatial (deconvolved) size of 196 ± 31 × 42 ± 29 au with a total (gas+dust) mass of 0.031 ± 0.015 M _⊙ . We estimated a dynamical mass for the central object of 0.66 ± 0.03 M _⊙ , and the mass of the molecular outflow of 5 ± 1.5 × 10 ^−5 M _⊙ . All these values are consistent with recent estimations. The observations confirm that the outflow rotation has a similar orientation to that of the edge-on disk. For the outflow, we find that the following quantities: the rotation velocity (∼1–3 km s ^−1 ), specific angular momentum (∼200–700 au km s ^−1 ), and launching radius (∼15–35 au) decrease with the height above the midplane, as observed in other molecular rotating outflows. The radius (∼180–280 au) and expansion velocity (∼2–4 km s ^−1 ) also increase with the height above the disk midplane for z < 0 au; however, for z < 0 au these quantities do not exhibit this behavior. Estimations of the outflow linear momentum rate, outflow angular momentum rate, and accretion luminosity seem to be well explained by the presence of a disk wind in CB 26. Star formation Stellar winds Astrophysics Luis A. Zapata verfasserin aut Chin-Fei Lee verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 944(2023), 1, p 63 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:944 year:2023 number:1, p 63 https://doi.org/10.3847/1538-4357/acb439 kostenfrei https://doaj.org/article/5b2398a14dc443c082fd20dd992a4ef7 kostenfrei https://doi.org/10.3847/1538-4357/acb439 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 944 2023 1, p 63 |
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10.3847/1538-4357/acb439 doi (DE-627)DOAJ089160444 (DE-599)DOAJ5b2398a14dc443c082fd20dd992a4ef7 DE-627 ger DE-627 rakwb eng QB460-466 J. A. López-Vázquez verfasserin aut A Disk Wind Driving the Rotating Molecular Outflow in CB 26 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present the ^12 CO ( J = 2–1) sensitive molecular line and 1.3 mm continuum observations from the Submillimeter Array (SMA) of the bipolar outflow associated with the young star located in the Bok globule known as CB 26. The SMA observations were carried out in its extended configuration allowing us to study the kinematics and structure of the outflow with about 1″ or 140 au resolution. We find that the dusty and edge-on circumstellar disk related to the outflow has a projected spatial (deconvolved) size of 196 ± 31 × 42 ± 29 au with a total (gas+dust) mass of 0.031 ± 0.015 M _⊙ . We estimated a dynamical mass for the central object of 0.66 ± 0.03 M _⊙ , and the mass of the molecular outflow of 5 ± 1.5 × 10 ^−5 M _⊙ . All these values are consistent with recent estimations. The observations confirm that the outflow rotation has a similar orientation to that of the edge-on disk. For the outflow, we find that the following quantities: the rotation velocity (∼1–3 km s ^−1 ), specific angular momentum (∼200–700 au km s ^−1 ), and launching radius (∼15–35 au) decrease with the height above the midplane, as observed in other molecular rotating outflows. The radius (∼180–280 au) and expansion velocity (∼2–4 km s ^−1 ) also increase with the height above the disk midplane for z < 0 au; however, for z < 0 au these quantities do not exhibit this behavior. Estimations of the outflow linear momentum rate, outflow angular momentum rate, and accretion luminosity seem to be well explained by the presence of a disk wind in CB 26. Star formation Stellar winds Astrophysics Luis A. Zapata verfasserin aut Chin-Fei Lee verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 944(2023), 1, p 63 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:944 year:2023 number:1, p 63 https://doi.org/10.3847/1538-4357/acb439 kostenfrei https://doaj.org/article/5b2398a14dc443c082fd20dd992a4ef7 kostenfrei https://doi.org/10.3847/1538-4357/acb439 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 944 2023 1, p 63 |
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10.3847/1538-4357/acb439 doi (DE-627)DOAJ089160444 (DE-599)DOAJ5b2398a14dc443c082fd20dd992a4ef7 DE-627 ger DE-627 rakwb eng QB460-466 J. A. López-Vázquez verfasserin aut A Disk Wind Driving the Rotating Molecular Outflow in CB 26 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present the ^12 CO ( J = 2–1) sensitive molecular line and 1.3 mm continuum observations from the Submillimeter Array (SMA) of the bipolar outflow associated with the young star located in the Bok globule known as CB 26. The SMA observations were carried out in its extended configuration allowing us to study the kinematics and structure of the outflow with about 1″ or 140 au resolution. We find that the dusty and edge-on circumstellar disk related to the outflow has a projected spatial (deconvolved) size of 196 ± 31 × 42 ± 29 au with a total (gas+dust) mass of 0.031 ± 0.015 M _⊙ . We estimated a dynamical mass for the central object of 0.66 ± 0.03 M _⊙ , and the mass of the molecular outflow of 5 ± 1.5 × 10 ^−5 M _⊙ . All these values are consistent with recent estimations. The observations confirm that the outflow rotation has a similar orientation to that of the edge-on disk. For the outflow, we find that the following quantities: the rotation velocity (∼1–3 km s ^−1 ), specific angular momentum (∼200–700 au km s ^−1 ), and launching radius (∼15–35 au) decrease with the height above the midplane, as observed in other molecular rotating outflows. The radius (∼180–280 au) and expansion velocity (∼2–4 km s ^−1 ) also increase with the height above the disk midplane for z < 0 au; however, for z < 0 au these quantities do not exhibit this behavior. Estimations of the outflow linear momentum rate, outflow angular momentum rate, and accretion luminosity seem to be well explained by the presence of a disk wind in CB 26. Star formation Stellar winds Astrophysics Luis A. Zapata verfasserin aut Chin-Fei Lee verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 944(2023), 1, p 63 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:944 year:2023 number:1, p 63 https://doi.org/10.3847/1538-4357/acb439 kostenfrei https://doaj.org/article/5b2398a14dc443c082fd20dd992a4ef7 kostenfrei https://doi.org/10.3847/1538-4357/acb439 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 944 2023 1, p 63 |
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A Disk Wind Driving the Rotating Molecular Outflow in CB 26 |
abstract |
We present the ^12 CO ( J = 2–1) sensitive molecular line and 1.3 mm continuum observations from the Submillimeter Array (SMA) of the bipolar outflow associated with the young star located in the Bok globule known as CB 26. The SMA observations were carried out in its extended configuration allowing us to study the kinematics and structure of the outflow with about 1″ or 140 au resolution. We find that the dusty and edge-on circumstellar disk related to the outflow has a projected spatial (deconvolved) size of 196 ± 31 × 42 ± 29 au with a total (gas+dust) mass of 0.031 ± 0.015 M _⊙ . We estimated a dynamical mass for the central object of 0.66 ± 0.03 M _⊙ , and the mass of the molecular outflow of 5 ± 1.5 × 10 ^−5 M _⊙ . All these values are consistent with recent estimations. The observations confirm that the outflow rotation has a similar orientation to that of the edge-on disk. For the outflow, we find that the following quantities: the rotation velocity (∼1–3 km s ^−1 ), specific angular momentum (∼200–700 au km s ^−1 ), and launching radius (∼15–35 au) decrease with the height above the midplane, as observed in other molecular rotating outflows. The radius (∼180–280 au) and expansion velocity (∼2–4 km s ^−1 ) also increase with the height above the disk midplane for z < 0 au; however, for z < 0 au these quantities do not exhibit this behavior. Estimations of the outflow linear momentum rate, outflow angular momentum rate, and accretion luminosity seem to be well explained by the presence of a disk wind in CB 26. |
abstractGer |
We present the ^12 CO ( J = 2–1) sensitive molecular line and 1.3 mm continuum observations from the Submillimeter Array (SMA) of the bipolar outflow associated with the young star located in the Bok globule known as CB 26. The SMA observations were carried out in its extended configuration allowing us to study the kinematics and structure of the outflow with about 1″ or 140 au resolution. We find that the dusty and edge-on circumstellar disk related to the outflow has a projected spatial (deconvolved) size of 196 ± 31 × 42 ± 29 au with a total (gas+dust) mass of 0.031 ± 0.015 M _⊙ . We estimated a dynamical mass for the central object of 0.66 ± 0.03 M _⊙ , and the mass of the molecular outflow of 5 ± 1.5 × 10 ^−5 M _⊙ . All these values are consistent with recent estimations. The observations confirm that the outflow rotation has a similar orientation to that of the edge-on disk. For the outflow, we find that the following quantities: the rotation velocity (∼1–3 km s ^−1 ), specific angular momentum (∼200–700 au km s ^−1 ), and launching radius (∼15–35 au) decrease with the height above the midplane, as observed in other molecular rotating outflows. The radius (∼180–280 au) and expansion velocity (∼2–4 km s ^−1 ) also increase with the height above the disk midplane for z < 0 au; however, for z < 0 au these quantities do not exhibit this behavior. Estimations of the outflow linear momentum rate, outflow angular momentum rate, and accretion luminosity seem to be well explained by the presence of a disk wind in CB 26. |
abstract_unstemmed |
We present the ^12 CO ( J = 2–1) sensitive molecular line and 1.3 mm continuum observations from the Submillimeter Array (SMA) of the bipolar outflow associated with the young star located in the Bok globule known as CB 26. The SMA observations were carried out in its extended configuration allowing us to study the kinematics and structure of the outflow with about 1″ or 140 au resolution. We find that the dusty and edge-on circumstellar disk related to the outflow has a projected spatial (deconvolved) size of 196 ± 31 × 42 ± 29 au with a total (gas+dust) mass of 0.031 ± 0.015 M _⊙ . We estimated a dynamical mass for the central object of 0.66 ± 0.03 M _⊙ , and the mass of the molecular outflow of 5 ± 1.5 × 10 ^−5 M _⊙ . All these values are consistent with recent estimations. The observations confirm that the outflow rotation has a similar orientation to that of the edge-on disk. For the outflow, we find that the following quantities: the rotation velocity (∼1–3 km s ^−1 ), specific angular momentum (∼200–700 au km s ^−1 ), and launching radius (∼15–35 au) decrease with the height above the midplane, as observed in other molecular rotating outflows. The radius (∼180–280 au) and expansion velocity (∼2–4 km s ^−1 ) also increase with the height above the disk midplane for z < 0 au; however, for z < 0 au these quantities do not exhibit this behavior. Estimations of the outflow linear momentum rate, outflow angular momentum rate, and accretion luminosity seem to be well explained by the presence of a disk wind in CB 26. |
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A Disk Wind Driving the Rotating Molecular Outflow in CB 26 |
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