Table · dataset · 2024
Radial velocity follow up of HD 307842
Listed in IVOA Registry (Virtual Observatory)
We report the confirmation of a TESS-discovered transiting super-Earth planet orbiting a mid-G star, HD307842 (TOI-784).
Description
The planet has a period of 2.8days, and the radial velocity (RV) measurements constrain the mass to be 9.67_-0.82_^+0.83^M{Earth}. We also report the discovery of an additional planet candidate on an outer orbit that is most likely nontransiting.
The possible periods of the planet candidate are approximately 20^-63^days, with the corresponding RV semiamplitudes expected to range from 3.2 to 5.4m/s and minimum masses from 12.6 to 31.1 M{Earth}. The radius of the transiting planet (planet b) is 1.93_-0.09_^+0.11^R{Earth}, which results in a mean density of 7.4_-1.2_^+1.4^g/cm^3^ suggesting that TOI-784b is likely to be a rocky planet though it has a comparable radius to a sub-Neptune.
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We found TOI-784 b is located at the lower edge of the so-called "radius valley" in the radius versus insolation plane, which is consistent with the photoevaporation or core-powered mass-loss prediction. The TESS data did not reveal any significant transit signal of the planet candidate, and our analysis shows that the orbital inclinations of planet b and the planet candidate are 88.60deg_-0.86_^+0.84^ and <~88deg^3^-89deg^2^, respectively.
More RV observations are needed to determine the period and mass of the second object, and search for additional planets in this system.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/166/32 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2023AJ....166...32H ui.adsabs.harvard.edu/abs/2023AJ....166...32H ↗
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/166/32 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Stellar astronomy and planetary systems 76%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/aj/166/32 | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].anzsrc:field:510109 | enrichment · IVOA Registry | taxonomy-embedding@1.1.0 | title+keywords+description (76%) |
| 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 |