Table · dataset · 2023
TOI-5678 b 48-day transiting Neptune
Listed in IVOA Registry (Virtual Observatory)
We report the discovery of a long-period transiting Neptune-mass planet orbiting the G7-type star TOI-5678.
Description
Our spectroscopic analysis shows that TOI-5678 is a star with a solar metallicity. The TESS light curve of TOI-5678 presents two transit events separated by almost two years.
CHEOPS observed the target as part of its Guaranteed Time Observation (GTO) program. After four non-detections corresponding to possible periods, CHEOPS detected a transit event matching a unique period alias. Follow-up radial velocity observations were carried out with the ground-based high resolution spectrographs CORALIE and HARPS.
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Joint modelling reveals that TOI-5678 hosts a 47.73 day period planet and we measure an orbital eccentricity consistent with 0 at at 2{sigma}. The planet has a mass of 20(+/-4) Mearth and a radius of 4.91(+/-0.08) Re. Using interior structure modeling, we find that TOI-5678 b is composed of a low-mass core surrounded by a large H/He layer.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/674/A43 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2023A&A...674A..43U ui.adsabs.harvard.edu/abs/2023A%26A...674A..43U ↗
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/674/a43 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- 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/674/a43 | 7 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:optical | 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 |