activity
20072026
most citedA giant exoplanet orbiting a very low-mass star challenges planet formation models

130 citations · 649 across the 28 of their papers we have counts for

collaborators

30 papers

astro-ph.SR2026

First L-type substellar object discovered in the vicinity of the embedded cluster NGC 2023

Styliani Tsilia, Carlos Dominguez-Tagle, Maruša Žerjal +8

We present the first substellar object in a star-forming region spectroscopically confirmed with Euclid, namely J054158.70-021031.4. This young and faint source is located close to…

astro-ph.SR2026

JWST Observations of the Metal-poor T Dwarf WISEA J155349.96+693355.2: The First Brown Dwarf Associated with the Gaia-Enceladus Milky Way Substructure

Aaron M. Meisner, Adam J. Burgasser, Chih-Chun Hsu +15

We present JWST NIRSpec and MIRI observations of the metal-poor T dwarf WISEA J155349.96+693355.2. The combined NIRSpec/prism plus MIRI/LRS spectrum (R ~ 100) provides 0.6-12 m…

astro-ph.SR2026

Metal-poor Brown Dwarf Kinematics from JWST NIRSpec Spectroscopy

Chih-Chun Hsu, Christopher A. Theissen, Adam J. Burgasser +14

Galactic archaeology relies on stellar kinematics and chemical abundances to identify various stellar populations and associations. With JWST, Galactic archaeology of ancient metal…

astro-ph.SR2026

Halo stars harbour few wide ultracool companions

Jerry Jun-Yan Zhang, Nicolas Lodieu, Eduardo L. Martín

We conducted the first search for wide ultracool companions to metal-poor halo stars. A sample of nearby halo stars with spectroscopically determined metallicities and high proper…

astro-ph.EP2026★ 1 cited

Mass estimates of the young TOI-451 transiting planets: Multidimensional Gaussian Process on stellar spectroscopic and photometric signals

Oscar Barragán, Manuel Mallorquín, Jorge Fernández-Fernández +30

The young TOI-451 planetary system, aged 125 Myr, provides a unique opportunity to test theories of planetary internal structures and atmospheric mass loss through examination of i…

astro-ph.EP2025★ 3 cited

The CARMENES search for exoplanets around M dwarfs : Understanding the wavelength dependence of radial velocity measurements

S. V. Jeffers, J. R. Barnes, P. Schöfer +22

Context. Current exoplanet surveys are focused on detecting small exoplanets orbiting in the liquid-water habitable zones of their host stars. Despite the recent significant advanc…