Table · dataset · 2026
LHS 3844 Radial velocities
Listed in IVOA Registry (Virtual Observatory)
We present the first planet mass measurement obtained with CRIRES+ radial velocity (RV) observations using the K-band gas cell.
Description
Our target, LHS 3844 b (TOI-136), is a transiting super-Earth with radius R_b_=1.286R_{earth}_ and an orbital period of P_b_=0.462929709d, placing it in the class of ultra-short-period (USP) planets. The host star LHS 3844 is an old (7.8+-1.6Gyr), slowly rotating (P_rot_=130.0d) M5.0 dwarf with M=0.151M_{sun} at a distance of 15pc (V=15.2mag, K=9.2mag).
Combining our CRIRES+ RVs with archival ESPRESSO spectra, and confirming the signal in each dataset independently, we detect periodic RV variations with a semi-amplitude K_b_=6.95m/s, implying a planetary mass of m_b_=2.37+/-0.25M_{earth}_ and a bulk density of rho_b_=6.15g/cm^3^, consistent with a predominantly rocky composition. We further find excess RV variability that may be attributed to stellar jitter or to an additional planetary signal, for which we identify a tentative super-Earth candidate with a period of ~6.88d.
Read the rest (2 more)
Owing to its proximity to its M-dwarf host, LHS 3844 b experiences intense irradiation and is unlikely to retain a substantial H/He envelope. Interior modeling places an upper limit on the iron-core mass fraction, which is consistent with an Earth-like rocky composition. With an emission spectroscopy metric (ESM) of 28, LHS 3844 b is a prime JWST target for atmospheric and surface characterization and the most promising surface-characterization target known.
Phase-curve spectroscopy may reveal its surface mineralogy and enable the first robust detection of exoplanet surface spectral features. Our results demonstrate that near-infrared RVs obtained with CRIRES+ enable robust mass measurements of super-Earths orbiting late M dwarfs.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/710/A311 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2026A&A...710A.311N ui.adsabs.harvard.edu/abs/2026A%26A...710A.311N ↗
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/710/a311 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 7 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/710/a311 | 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 | |
| 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 |