Table · dataset · 2023
M83 HI datacube
Listed in IVOA Registry (Virtual Observatory)
We present new HI observations of the nearby massive spiral galaxy M83, taken with the JVLA at 21 arcsec angular resolution (~500pc) of an extended (~1.5deg^2^) ten-point mosaic combined with GBT single-dish data.
Description
We study the super-extended HI disk of M83 (~50kpc in radius), in particular disk kinematics, rotation, and the turbulent nature of the atomic interstellar medium. We define distinct regions in the outer disk (r_gal_> central optical disk), including a ring, a southern area, a southern arm and a northern arm.
We examine HI gas surface density, velocity dispersion, and noncircular motions in the outskirts, which we compare to the inner optical disk. We find an increase of velocity dispersion ({sigma}_v_) toward the pronounced HI ring, indicative of more turbulent HI gas. Additionally, we report over a large galactocentric radius range (until r_gal_~50kpc) where {sigma}_v_ is slightly larger than thermal component (i.e., >8km/s).
Read the rest (2 more)
We find that a higher star-formation rate (as traced by far UV emission) is not necessarily always associated with a higher HI velocity dispersion, suggesting that radial transport could be a dominant driver for the enhanced velocity dispersion. Furthermore, we find a possible branch that connects the extended HI disk to the dwarf irregular galaxy UGCA 365 and that deviates from the general direction of the northern arm.
Lastly, we compare mass flow rate profiles (based on 2D and 3D tilted ring models) and find evidence for outflowing gas at r_gal_~2kpc, inflowing gas at r_gal_~5.5kpc, and outflowing gas at r_gal_~14kpc. We caution that mass flow rates are highly sensitive to the assumed kinematic disk parameters, in particular to inclination.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/675/A37 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2023A&A...675A..37E ui.adsabs.harvard.edu/abs/2023A%26A...675A..37E ↗
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/a%2Ba/675/a37 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Radio
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/675/a37 | 10 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:radio | 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 |