Table · dataset · 2022
TOI-1468 photometry and radial velocities
Listed in IVOA Registry (Virtual Observatory)
We report the discovery and characterization of two small transiting planets orbiting the bright M3.0 V star TOI-1468 (LSPM J0106+1913), whose transit signals were detected in the photometric time series in three sectors of the TESS mission.
Description
We confirm the planetary nature of both of them using precise radial velocity measurements from the CARMENES and MAROON-X spectrographs, and supplemented it with ground-based transit photometry.
A joint analysis of all these data reveals that the shorter-period planet, TOI-1468b (P_b_=1.88d), has a planetary mass of M_b_= 3.21+/-0.24M_{earth} and a radius of R_b_=1.280^+0.038_-0.039_R_{earth}, resulting in a density of rho_b_=8.39^+ 1.05^_-0.92_g/cm^3^, which is consistent with a mostly rocky composition. For the outer planet, TOI-1468c (P_c_=15.53d), we derive a mass of M_c_=6.64^+ 0.67^_-0.68_M_{earth}, a radius of R_c_=2.06+/-0.04R_{earth}, and a bulk density of rho_c_=2.00^+ 0.21^_-0.19_g/cm^3^, which corresponds to a rocky core composition with a H/He gas envelope.
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These planets are located on the opposite sides of the radius valley, making our system an interesting discovery as there are only a handful of other systems with the same properties. This finding can then further help determine a more precise location of the radius valley for small planets around M dwarfs and, therefore, shed more light on planet formation and evolution scenarios.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/666/A155 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2022A&A...666A.155C ui.adsabs.harvard.edu/abs/2022A%26A...666A.155C ↗
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/666/a155 ↗
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/666/a155 | 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 |