MINDS. JWST-MIRI Observations of a Spatially Resolved Atomic Jet and Polychromatic Molecular Wind toward SY Cha
The removal of angular momentum from protostellar systems drives accretion onto the central star and may drive the dispersal of the protoplanetary disk. Winds and jets can contribute to removing angular momentum from the disk, though the dominant process remains unclear. To date, observational studi...
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2025-01-01
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| author | Kamber R. Schwarz Matthias Samland Göran Olofsson Thomas Henning Andrew Sellek Manuel Güdel Benoît Tabone Inga Kamp Pierre-Olivier Lagage Ewine F. van Dishoeck Alessio Caratti o Garatti Adrian M. Glauser Tom P. Ray Aditya M. Arabhavi Valentin Christiaens R. Franceschi Danny Gasman Sierra L. Grant Jayatee Kanwar Till Kaeufer Nicolas T. Kurtovic Giulia Perotti Milou Temmink Marissa Vlasblom |
| author_facet | Kamber R. Schwarz Matthias Samland Göran Olofsson Thomas Henning Andrew Sellek Manuel Güdel Benoît Tabone Inga Kamp Pierre-Olivier Lagage Ewine F. van Dishoeck Alessio Caratti o Garatti Adrian M. Glauser Tom P. Ray Aditya M. Arabhavi Valentin Christiaens R. Franceschi Danny Gasman Sierra L. Grant Jayatee Kanwar Till Kaeufer Nicolas T. Kurtovic Giulia Perotti Milou Temmink Marissa Vlasblom |
| author_sort | Kamber R. Schwarz |
| collection | DOAJ |
| description | The removal of angular momentum from protostellar systems drives accretion onto the central star and may drive the dispersal of the protoplanetary disk. Winds and jets can contribute to removing angular momentum from the disk, though the dominant process remains unclear. To date, observational studies of resolved disk winds have mostly targeted highly inclined disks. We report the detection of extended H _2 and [Ne ii ] emission toward the young stellar object SY Cha with the JWST Mid-InfraRed Instrument Medium-Resolution Spectrometer (MIRI-MRS). This is one of the first polychromatic detections of extended H _2 toward a moderately inclined, i = 51 $\mathop{.}\limits^{\unicode{x000B0}}$ 1, Class II source. We measure the semiopening angle of the H _2 emission and build a rotation diagram to determine the H _2 excitation temperature and abundance. We find a wide semiopening angle, high temperature, and low column density for the H _2 emission, all of which are characteristic of a disk wind. We derive a molecular wind mass loss rate of 3 ± 2 × 10 ^−9 M _⊙ yr ^−1 , which is high compared to the previously derived stellar accretion rate of 6.6 × 10 ^−10 M _⊙ yr ^−1 . This suggests either that the stellar accretion and the disk wind are driven by different mechanisms or that accretion onto the star is highly variable. These observations demonstrate MIRI-MRS's utility in expanding studies of resolved disk winds beyond edge-on sources. |
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| institution | Kabale University |
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| spelling | doaj-art-468e164328274d95a296131a51c18fdc2025-02-10T06:54:44ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01980114810.3847/1538-4357/adaa79MINDS. JWST-MIRI Observations of a Spatially Resolved Atomic Jet and Polychromatic Molecular Wind toward SY ChaKamber R. Schwarz0https://orcid.org/0000-0002-6429-9457Matthias Samland1https://orcid.org/0000-0001-9992-4067Göran Olofsson2https://orcid.org/0000-0003-3747-7120Thomas Henning3https://orcid.org/0000-0002-1493-300XAndrew Sellek4https://orcid.org/0000-0003-0330-1506Manuel Güdel5https://orcid.org/0000-0001-9818-0588Benoît Tabone6https://orcid.org/0000-0002-1103-3225Inga Kamp7https://orcid.org/0000-0001-7455-5349Pierre-Olivier Lagage8Ewine F. van Dishoeck9https://orcid.org/0000-0001-7591-1907Alessio Caratti o Garatti10https://orcid.org/0000-0001-8876-6614Adrian M. Glauser11https://orcid.org/0000-0001-9250-1547Tom P. Ray12https://orcid.org/0000-0002-2110-1068Aditya M. Arabhavi13https://orcid.org/0000-0001-8407-4020Valentin Christiaens14https://orcid.org/0000-0002-0101-8814R. Franceschi15https://orcid.org/0000-0002-8889-2992Danny Gasman16https://orcid.org/0000-0002-1257-7742Sierra L. Grant17https://orcid.org/0000-0002-4022-4899Jayatee Kanwar18https://orcid.org/0000-0003-0386-2178Till Kaeufer19https://orcid.org/0000-0001-8240-978XNicolas T. Kurtovic20https://orcid.org/0000-0002-2358-4796Giulia Perotti21https://orcid.org/0000-0002-8545-6175Milou Temmink22https://orcid.org/0000-0002-7935-7445Marissa Vlasblom23https://orcid.org/0000-0002-3135-2477Max-Planck-Institut für Astronomie (MPIA) , Königstuhl 17, 69117 Heidelberg, GermanyMax-Planck-Institut für Astronomie (MPIA) , Königstuhl 17, 69117 Heidelberg, GermanyDepartment of Astronomy, Stockholm University , AlbaNova University Center, 10691 Stockholm, SwedenMax-Planck-Institut für Astronomie (MPIA) , Königstuhl 17, 69117 Heidelberg, GermanyLeiden Observatory, Leiden University , P.O. Box 9513, 2300 RA Leiden, The NetherlandsDepartment of Astrophysics, University of Vienna , Türkenschanzstr. 17, A-1180 Vienna, Austria; ETH Zürich, Institute for Particle Physics and Astrophysics , Wolfgang-Pauli-Str. 27, 8093 Zürich, SwitzerlandUniversité Paris-Saclay , CNRS, Institut d’Astrophysique Spatiale, 91405 Orsay, FranceKapteyn Astronomical Institute , Rijksuniversiteit Groningen, Postbus 800, 9700AV Groningen, The NetherlandsUniversité Paris-Saclay , Université Paris Cité, CEA, CNRS, AIM, F-91191 Gif-sur-Yvette, FranceLeiden Observatory, Leiden University , P.O. Box 9513, 2300 RA Leiden, The Netherlands; Max-Planck Institut für Extraterrestrische Physik (MPE) , Giessenbachstr. 1, 85748, Garching, GermanyINAF—Osservatorio Astronomico di Capodimonte , Salita Moiariello 16, 80131 Napoli, Italy; Dublin Institute for Advanced Studies , 31 Fitzwilliam Place, D02 XF86 Dublin, IrelandETH Zürich, Institute for Particle Physics and Astrophysics , Wolfgang-Pauli-Str. 27, 8093 Zürich, SwitzerlandDublin Institute for Advanced Studies , 31 Fitzwilliam Place, D02 XF86 Dublin, IrelandKapteyn Astronomical Institute , Rijksuniversiteit Groningen, Postbus 800, 9700AV Groningen, The NetherlandsSTAR Institute, Université de Liège , Allée du Six Août 19c, 4000 Liège, BelgiumMax-Planck-Institut für Astronomie (MPIA) , Königstuhl 17, 69117 Heidelberg, GermanyInstitute of Astronomy , KU Leuven, Celestijnenlaan 200D, 3001 Leuven, BelgiumMax-Planck Institut für Extraterrestrische Physik (MPE) , Giessenbachstr. 1, 85748, Garching, GermanyKapteyn Astronomical Institute , Rijksuniversiteit Groningen, Postbus 800, 9700AV Groningen, The Netherlands; Space Research Institute , Austrian Academy of Sciences, Schmiedlstr. 6, A-8042, Graz, Austria; TU Graz , Fakultät für Mathematik, Physik und Geodäsie, Petersgasse 16 8010 Graz, AustriaKapteyn Astronomical Institute , Rijksuniversiteit Groningen, Postbus 800, 9700AV Groningen, The Netherlands; Space Research Institute , Austrian Academy of Sciences, Schmiedlstr. 6, A-8042, Graz, Austria; SRON Netherlands Institute for Space Research , Niels Bohrweg 4, NL-2333 CA Leiden, The Netherlands; Institute for Theoretical Physics and Computational Physics, Graz University of Technology , Petersgasse 16, 8010 Graz, AustriaMax-Planck Institut für Extraterrestrische Physik (MPE) , Giessenbachstr. 1, 85748, Garching, GermanyMax-Planck-Institut für Astronomie (MPIA) , Königstuhl 17, 69117 Heidelberg, GermanyLeiden Observatory, Leiden University , P.O. Box 9513, 2300 RA Leiden, The NetherlandsLeiden Observatory, Leiden University , P.O. Box 9513, 2300 RA Leiden, The NetherlandsThe removal of angular momentum from protostellar systems drives accretion onto the central star and may drive the dispersal of the protoplanetary disk. Winds and jets can contribute to removing angular momentum from the disk, though the dominant process remains unclear. To date, observational studies of resolved disk winds have mostly targeted highly inclined disks. We report the detection of extended H _2 and [Ne ii ] emission toward the young stellar object SY Cha with the JWST Mid-InfraRed Instrument Medium-Resolution Spectrometer (MIRI-MRS). This is one of the first polychromatic detections of extended H _2 toward a moderately inclined, i = 51 $\mathop{.}\limits^{\unicode{x000B0}}$ 1, Class II source. We measure the semiopening angle of the H _2 emission and build a rotation diagram to determine the H _2 excitation temperature and abundance. We find a wide semiopening angle, high temperature, and low column density for the H _2 emission, all of which are characteristic of a disk wind. We derive a molecular wind mass loss rate of 3 ± 2 × 10 ^−9 M _⊙ yr ^−1 , which is high compared to the previously derived stellar accretion rate of 6.6 × 10 ^−10 M _⊙ yr ^−1 . This suggests either that the stellar accretion and the disk wind are driven by different mechanisms or that accretion onto the star is highly variable. These observations demonstrate MIRI-MRS's utility in expanding studies of resolved disk winds beyond edge-on sources.https://doi.org/10.3847/1538-4357/adaa79Protoplanetary disksInfrared spectroscopyMolecular gasStellar jets |
| spellingShingle | Kamber R. Schwarz Matthias Samland Göran Olofsson Thomas Henning Andrew Sellek Manuel Güdel Benoît Tabone Inga Kamp Pierre-Olivier Lagage Ewine F. van Dishoeck Alessio Caratti o Garatti Adrian M. Glauser Tom P. Ray Aditya M. Arabhavi Valentin Christiaens R. Franceschi Danny Gasman Sierra L. Grant Jayatee Kanwar Till Kaeufer Nicolas T. Kurtovic Giulia Perotti Milou Temmink Marissa Vlasblom MINDS. JWST-MIRI Observations of a Spatially Resolved Atomic Jet and Polychromatic Molecular Wind toward SY Cha The Astrophysical Journal Protoplanetary disks Infrared spectroscopy Molecular gas Stellar jets |
| title | MINDS. JWST-MIRI Observations of a Spatially Resolved Atomic Jet and Polychromatic Molecular Wind toward SY Cha |
| title_full | MINDS. JWST-MIRI Observations of a Spatially Resolved Atomic Jet and Polychromatic Molecular Wind toward SY Cha |
| title_fullStr | MINDS. JWST-MIRI Observations of a Spatially Resolved Atomic Jet and Polychromatic Molecular Wind toward SY Cha |
| title_full_unstemmed | MINDS. JWST-MIRI Observations of a Spatially Resolved Atomic Jet and Polychromatic Molecular Wind toward SY Cha |
| title_short | MINDS. JWST-MIRI Observations of a Spatially Resolved Atomic Jet and Polychromatic Molecular Wind toward SY Cha |
| title_sort | minds jwst miri observations of a spatially resolved atomic jet and polychromatic molecular wind toward sy cha |
| topic | Protoplanetary disks Infrared spectroscopy Molecular gas Stellar jets |
| url | https://doi.org/10.3847/1538-4357/adaa79 |
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