activity
20242026
most citedThe First Spin-Orbit Obliquity of an M dwarf/brown dwarf System: An eccentric and aligned TOI-2119 b

10 citations · 14 across the 12 of their papers we have counts for

collaborators

12 papers

astro-ph.EP2026

TOI-3664 b, TOI-4034 b & TOI-6564 b: Three new hot Jupiters around stars approaching the terminal age main sequence

Matthew P. Battley, Marina Lafarga, Edward Gillen +21

Studying the evolution of hot Jupiters requires a sample of well-characterised systems across all evolutionary states. We present three new gas giant exoplanets around stars approa…

astro-ph.EP2026

Automatic search for transiting planets in TESS-SPOC FFIs with RAVEN: over 100 newly validated planets and over 2000 vetted candidates

M. Lafarga, D. J. Armstrong, K. Cui +7

Space-based missions such as TESS are identifying a wealth of short-period ( d) transiting planets. Despite the growing number of confirmed and candidate planets, the s…

astro-ph.EP2026

Long-period magnetic activity in the K dwarf GJ 1137 and a new super-Earth on a 9-day orbit

Denitza Stoeva, Atanas K. Stefanov, Stefan Y. Stefanov +12

Aims: We investigate long-term radial velocity (RV) variability in the K-dwarf star GJ 1137 (HD 93083, HIP52521), a known Saturn-mass exoplanet host, and assess the role of stellar…

astro-ph.EP2026★ 3 cited

Demographics of Close-In TESS Exoplanets Orbiting FGK Main-sequence Stars

Kaiming Cui, David J. Armstrong, Andreas Hadjigeorghiou +5

Understanding the demographics of close-in planets is crucial for insights into exoplanet formation and evolution. We present a detailed analysis of occurrence rates for close-in (…

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

Resolving star spots on WASP-85 A using high-resolution transit spectroscopy

Vedad Kunovac, Heather Cegla, Hritam Chakraborty +23

Stellar surface inhomogeneities such as spots and faculae introduce Doppler variations that challenge exoplanet detection via the radial velocity method. While their impact on disc…

astro-ph.EP2025

Astroclimes -- measuring the abundance of CO and CH in the Earth's atmosphere using astronomical observations

Marcelo Aron Fetzner Keniger, David Armstrong, Matteo Brogi +2

Monitoring the abundance of greenhouse gases (GHGs) such as carbon dioxide (CO) and methane (CH) is necessary to quantify their impact on global warming and climate change.…

astro-ph.EP2025

Exploring the Neptunian Desert: Insights from a Homogeneous Planetary Sample

Lauren Doyle, David J. Armstrong, Lorena Acuña +26

In this paper, we present a homogeneous analysis of close-in Neptune planets. To do this, we compile a sample of TESS-observed planets using a ranking criterion which takes into ac…

astro-ph.EP2025

Detectability of oxygen fugacity regimes in the magma ocean world 55 Cancri e at high spectral resolution

Spandan Dash, Matteo Brogi, Fabian Lukas Seidler +5

Ultra-short Period exoplanets (USPs) like 55 Cnc e, hosting dayside magma oceans, present unique opportunities to study surface-atmosphere interactions. The composition of a vapori…

astro-ph.SR2024

ESPRESSO observations of the debris-accreting white dwarf WD\,0141--675

Sergio H. Ramirez, Boris T. Gaensicke, Detlev Koester +2

WD\,0141--675 was reported as the first astrometrically detected white dwarf planet host candidate as part of the third data release from \textit{Gaia}, just to be later retracted…

astro-ph.EP2024★ 10 cited

The First Spin-Orbit Obliquity of an M dwarf/brown dwarf System: An eccentric and aligned TOI-2119 b

Lauren Doyle, Caleb I. Cañas, Jessica E. Libby-Roberts +15

We report the first instance of an M dwarf/brown dwarf obliquity measurement for the TOI-2119 system using the Rossiter-McLaughlin effect. TOI-2119 b is a transiting brown dwarf or…

astro-ph.EP2024

The mystery of water in the atmosphere of Boötis b continues: insights from revisiting archival CRIRES observations

Vatsal Panwar, Matteo Brogi, Siddharth Gandhi +2

The chemical abundances of gas-giant exoplanet atmospheres hold clues to the formation and evolution pathways that sculpt the exoplanet population. Recent ground-based high-resolut…