Academic Journal
JWST MIRI MRS Images of Disk Winds, Water, and CO in an Edge-on Protoplanetary Disk
| العنوان: | JWST MIRI MRS Images of Disk Winds, Water, and CO in an Edge-on Protoplanetary Disk |
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| المؤلفون: | Arulanantham, Nicole, Mcclure, M., Pontoppidan, Klaus, Beck, Tracy, Sturm, J., Harsono, D., Boogert, A., Cordiner, M., Dartois, E., Drozdovskaya, M., Espaillat, C., Melnick, G., Noble, Jennifer, A., Palumbo, M., Pendleton, Y., Terada, H., van Dishoeck, E. |
| المساهمون: | GSFC Solar System Exploration Division, NASA Goddard Space Flight Center (GSFC), Institut des Sciences Moléculaires d'Orsay (ISMO), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Universität Bern = University of Bern = Université de Berne (UNIBE), Physique des interactions ioniques et moléculaires (PIIM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Subaru Telescope, National Astronomical Observatory of Japan (NAOJ), Universiteit Leiden = Leiden University, Max-Planck-Institut für Extraterrestrische Physik (MPE) |
| المصدر: | ISSN: 2041-8205. |
| بيانات النشر: | HAL CCSD IOP Publishing |
| سنة النشر: | 2024 |
| المجموعة: | Aix-Marseille Université: HAL |
| مصطلحات موضوعية: | planetary system formation, James Webb Space Telescope, infrared spectroscopy, [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] |
| الوصف: | International audience ; We present JWST MIRI MRS observations of the edge-on protoplanetary disk around the young subsolar-mass star Tau 042021, acquired as part of the Cycle 1 GO program “Mapping Inclined Disk Astrochemical Signatures.” These data resolve the mid-IR spatial distributions of H 2 , revealing X-shaped emission extending to ∼200 au above the disk midplane with a semiopening angle of 35° ± 5°. We do not velocity-resolve the gas in the spectral images, but the measured semiopening angle of the H 2 is consistent with a magnetohydrodynamic wind origin. A collimated, bipolar jet is seen in forbidden emission lines from [Ne ii ], [Ne iii ], [Ni ii ], [Fe ii ], [Ar ii ], and [S iii ]. Extended H 2 O and CO emission lines are also detected, reaching diameters of ∼90 and 190 au, respectively. Hot molecular emission is not expected at such radii, and we interpret its extended spatial distribution as scattering of inner disk molecular emission by dust grains in the outer disk surface. H i recombination lines, characteristic of inner disk accretion shocks, are similarly extended and are likely also scattered light from the innermost star–disk interface. Finally, we detect extended polycyclic aromatic hydrocarbon (PAH) emission at 11.3 μ m cospatial with the scattered-light continuum, making this the first low-mass T Tauri star around which extended PAHs have been confirmed, to our knowledge. MIRI MRS line images of edge-on disks provide an unprecedented window into the outflow, accretion, and scattering processes within protoplanetary disks, allowing us to constrain the disk lifetimes and accretion and mass-loss mechanisms. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/arxiv/2402.12256; ARXIV: 2402.12256 |
| DOI: | 10.3847/2041-8213/ad35c9 |
| الاتاحة: | https://hal.science/hal-04796406 https://hal.science/hal-04796406v1/document https://hal.science/hal-04796406v1/file/2024Arulanantham_preprint.pdf https://doi.org/10.3847/2041-8213/ad35c9 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.A34B5994 |
| قاعدة البيانات: | BASE |
| DOI: | 10.3847/2041-8213/ad35c9 |
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