Table · dataset · 2024
JWST MIRI spectrum of T Cha
Listed in IVOA Registry (Virtual Observatory)
Understanding when and how circumstellar disks disperse is crucial to constrain planet formation and migration.
Description
Thermal winds powered by high-energy stellar photons have long been theorized to drive disk dispersal. However, evidence for these winds is currently based only on small (~3-6km/s) blueshifts in [NeII] 12.81{mu}m lines, which does not exclude MHD winds.
We report JWST MIRI MRS spectro-imaging of TCha, a disk with a large dust gap (~30au in radius) and blueshifted [NeII] emission. We detect four forbidden noble gas lines, [ArII], [ArIII], [NeII], and [NeIII], of which [ArIII] is the first detection in any protoplanetary disk. We use line flux ratios to constrain the energy of the ionizing photons and find that argon is ionized by extreme ultraviolet, whereas neon is most likely ionized by X-rays.
Read the rest (2 more)
After performing continuum and point-spread function subtraction on the integral field unit cube, we discover a spatial extension in the [NeII] emission off the disk continuum emission. This is the first spatially resolved [NeII] disk wind emission. The mostly ionic spectrum of TCha, in combination with the extended [NeII] emission, points to an evolved stage for any inner MHD wind and is consistent with the existence of an outer thermal wind ionized and driven by high-energy stellar photons.
This work acts as a pathfinder for future observations aiming at investigating disk dispersal using JWST.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/167/127 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2024AJ....167..127B ui.adsabs.harvard.edu/abs/2024AJ....167..127B ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/aj/167/127 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Infrared
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 71%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/aj/167/127 | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].anzsrc:group:5101 | enrichment · IVOA Registry | taxonomy-embedding@1.1.0 | title+keywords+description (71%) |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:infrared | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |