Table · dataset · 2022
TOI-5542 SAAO and EulerCam photometry
Listed in IVOA Registry (Virtual Observatory)
We report the discovery of a 1.32^+0.10^_-0.10_M_Jup_ planet orbiting on a 75.12 day period around the G3V 10.8^+2.1^_-3.6_Gyr old star TOI-5542 (TIC 466206508; TYC 9086-1210-1).
Description
The planet was first detected by the Transiting Exoplanet Survey Satellite (TESS) as a single transit event in TESS Sector 13. A second transit was observed 376 days later in TESS Sector 27.
The planetary nature of the object has been confirmed by ground-based spectroscopic and radial velocity observations from the CORALIE and HARPS spectrographs. A third transit event was detected by the ground-based facilities NGTS, EulerCam, and SAAO. We find the planet has a radius of 1.009^+0.036^_-0.035_R_Jup_ and an insolation of 9.6^+0.9^_-0.8_S_{sun}_, along with a circular orbit that most likely formed via disk migration or in situ formation, rather than high-eccentricity migration mechanisms.
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Our analysis of the HARPS spectra yields a host star metallicity of [Fe/H]=-0.21+/-0.08, which does not follow the traditional trend of high host star metallicity for giant planets and does not bolster studies suggesting a difference among low- and high-mass giant planet host star metallicities. Additionally, when analyzing a sample of 216 well-characterized giant planets, we find that both high masses (4M_Jup_<M_p_<13M_Jup_) and low masses (0.5M_Jup_<M_p_<4M_Jup_), as well as both both warm (P>10-days) and hot (P<10-days) giant planets are preferentially located around metal-rich stars (mean [Fe/H]>0.1).
TOI-5542b is one of the oldest known warm Jupiters and it is cool enough to be unaffected by inflation due to stellar incident flux, making it a valuable contribution in the context of planetary composition and formation studies.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/668/A29 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2022A&A...668A..29G ui.adsabs.harvard.edu/abs/2022A%26A...668A..29G ↗
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/668/a29 ↗
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/668/a29 | 12 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 |