Table · dataset · 2022
SPIRou and IRD radial velocity of TOI-1452
Listed in IVOA Registry (Virtual Observatory)
Exploring the properties of exoplanets near or inside the radius valley provides insight on the transition from the rocky super-Earths to the larger, hydrogen-rich atmosphere mini-Neptunes.
Description
Here, we report the discovery of TOI-1452b, a transiting super-Earth (Rp=1.67{+/-}0.07R{Earth}) in an 11.1day temperate orbit (Teq=326{+/-}7K) around the primary member (H=10.0, Teff=3185 {+/-}50K) of a nearby visual-binary M-dwarf.
The transits were first detected by the Transiting Exoplanet Survey Satellite, then successfully isolated between the two 3.2" companions with ground-based photometry from the Observatoire du Mont-Megantic and MuSCAT3. The planetary nature of TOI-1452b was established through high-precision velocimetry with the near-infrared SPIRou spectropolarimeter as part of the ongoing SPIRou Legacy Survey. The measured planetary mass (4.8{+/-}1.3M{Earth}) and inferred bulk density (5.6_-1.6_^+1.8^g/cm^3^) is suggestive of a rocky core surrounded by a volatile-rich envelope.
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More quantitatively, the mass and radius of TOI-1452b, combined with the stellar abundance of refractory elements (Fe, Mg, and Si) measured by SPIRou, is consistent with a core-mass fraction of 18%{+/-}6% and a water-mass fraction of 22_-13_^+21^%. The water world candidate TOI-1452b is a prime target for future atmospheric characterization with JWST, featuring a transmission spectroscopy metric similar to other well-known temperate small planets such as LHS1140b and K2-18b.
The system is located near Webb's northern continuous viewing zone, implying that is can be followed at almost any moment of the year.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/164/96 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2022AJ....164...96C ui.adsabs.harvard.edu/abs/2022AJ....164...96C ↗
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/164/96 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Infrared
- 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/164/96 | 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: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 |