Table · dataset · 2024
TESS-Keck Survey. XVIII. TOI-1751 radial velocity
Listed in IVOA Registry (Virtual Observatory)
We present and confirm TOI-1751b, a transiting sub-Neptune orbiting a slightly evolved, solar-type, metal-poor star (Teff=5996{+/-}110K, logg=4.2{+/-}0.1, V=9.3mag, [Fe/H]=-0.40{+/-}0.06dex) every 37.47days.
Description
We use TESS photometry to measure a planet radius of 2.7}_-0.07_^+0.15^R{earth}. We also use both Keck/HIRES and APF/Levy radial velocities (RV) to derive a planet mass of 14.5_-3.14_^+3.15^M{earth}, and thus a planet density of 3.6{+/-}0.9g/cm^3^.
There is also a long-period (~400days) signal that is observed in only the Keck/HIRES data. We conclude that this long-period signal is not planetary in nature and is likely due to the window function of the Keck/HIRES observations. This highlights the role of complementary observations from multiple observatories to identify and exclude aliases in RV data.
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Finally, we investigate the potential compositions of this planet, including rocky and water-rich solutions, as well as theoretical irradiated ocean models. TOI-1751b is a warm sub-Neptune with an equilibrium temperature of ~820K. As TOI-1751 is a metal-poor star, TOI-1751b may have formed in a water-enriched formation environment.
We thus favor a volatile-rich interior composition for this planet.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/167/194 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2024AJ....167..194D ui.adsabs.harvard.edu/abs/2024AJ....167..194D ↗
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/167/194 ↗
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/aj/167/194 | 15 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 |