activity
20232026
most citedTOI-837b is a Young Saturn-sized Exoplanet with a Massive 70 Core

12 citations · 51 across the 16 of their papers we have counts for

collaborators

19 papers

astro-ph.SR2026

The EBLM project - XX. Absolute dynamical masses of five low-mass eclipsing binaries, and an evaluation of mass estimation methods

Adam T. Stevenson, Yasmin T. Davis, Daniel Sebastian +8

Eclipsing binaries consisting of a solar-type primary and an M dwarf secondary are key laboratories to study objects at the bottom of the main sequence. Fundamental parameters of s…

astro-ph.SR2026

The EBLM Project - XIX. The absence of radius inflation in a homogeneous analysis of 66 Northern low-mass eclipsing binaries

Yasmin T. Davis, Amaury H. M. J. Triaud, David V. Martin +30

Precise and accurate measurements of host stars are crucial in the search for Earth-like exoplanets, and M-dwarfs are favourable targets in this quest. Low-mass eclipsing binaries…

astro-ph.EP2026

No statistically significant evidence for a correlation between stellar and planetary composition

Daisy A. Turner, Annelies Mortier, James G. Rogers +4

The chemical compositions of planets and their hosts stars are intrinsically linked, having formed from the same protostellar material. Characterising this relationship provides ke…

astro-ph.EP2026★ 1 cited

ASTEP confirmation of a pair of long-period Jupiter-sized planets with extremely low densities transiting TOI-791

Georgina Dransfield, Antoine C. Petit, Amaury H. M. J. Triaud +45

Gas giant planets with periods orbiting Sun-like stars are a relatively uncommon outcome of planetary formation, and key questions about the nature and form…

astro-ph.SR2026

gr8stars II : judgement day for spectroscopic parameter model systematics

Alix Violet Freckelton, Annelies Mortier, Megan Bedell +18

Many areas of astrophysics, including exoplanetary studies, rely on precise and accurate stellar parameters. This demands that uncertainties on these parameters truly reflect all b…

astro-ph.EP2026

The Neptunian ridge planet WASP-156 b does not have a polar orbit

M. Lafarga, J. I. Espinoza-Retamal, H. M. Cegla +26

The population of short-period exo-Neptunes is thought to be shaped by an interplay between different dynamical mechanisms, such as orbital migration and tidal effects, and photoev…

astro-ph.EP2026★ 2 cited

TIC-65910228 b / NGTS-38 b, a 180 day transiting warm super-Jupiter

Toby Rodel, Solène Ulmer-Moll, Samuel Gill +63

We present the discovery of TIC-65910228 b / NGTS-38 b, a giant exoplanet with a radius of R and a mass of M on a long-…

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★ 2 cited

A Cold and Super-Puffy Planet on a Prograde Orbit

Juan I. Espinoza-Retamal, Rafael Brahm, Cristobal Petrovich +36

We report the discovery of TOI-4507 b, a transiting sub-Saturn with a density 0.2 g/cm on a 105-day prograde orbit around a 700 Myr old F star. The transits were detected u…

astro-ph.EP2025

HD 28471: a near-resonant compact multiplanet system with a possible cold giant planet

A. T. Stevenson, C. A. Haswell, J. R. Barnes +5

We present radial velocity measurements of the star HD 28471, observed by HARPS at the ESO 3.6 m telescope over a baseline of years. We have searched for planetary compani…

astro-ph.EP2025★ 9 cited

BEBOP VII. SOPHIE discovery of BEBOP-3b, a circumbinary giant planet on an eccentric orbit

Thomas A. Baycroft, Alexandre Santerne, Amaury H. M. J. Triaud +21

Planetary systems orbiting close binaries are valuable testing grounds for planet formation and migration models. More detections with good mass measurements are needed. We present…

astro-ph.EP2025★ 2 cited

The mass of the exo-Venus Gliese 12 b, as revealed by HARPS-N, ESPRESSO, and CARMENES

Daisy A. Turner, Yoshi Nike Emilia Eschen, Felipe Murgas +60

Small temperate planets are prime targets for exoplanet studies due to their possible similarities with the rocky planets in the Solar System. M dwarfs are promising hosts since th…

astro-ph.SR2025

gr8stars I: A homogeneous spectroscopic study of bright FGKM dwarfs and a public library of their high-resolution spectra

Alix Violet Freckelton, Annelies Mortier, Megan Bedell +15

As the fields of stellar and exoplanetary study grow and revolutionary new detection instruments are created, it is imperative that a homogeneous, precise source of stellar paramet…

astro-ph.SR2025★ 6 cited

The EBLM project -- XIV. TESS light curves for eclipsing binaries with very low mass companions

Jay Fitzpatrick, Pierre F. L. Maxted, Alix V. Freckelton +3

Accurate limb-darkening models are needed for accurate characterisation of eclipsing binary stars and transiting exoplanets from the analysis of their light curves. The limb-darken…

astro-ph.SR2025★ 5 cited

NGTS-EB-7, an eccentric, long-period, low-mass eclipsing binary

Toby Rodel, Christopher. A. Watson, Solène Ulmer-Moll +35

Despite being the most common types of stars in the Galaxy, the physical properties of late M dwarfs are often poorly constrained. A trend of radius inflation compared to evolution…

astro-ph.SR2024

BEBOP V. Homogeneous Stellar Analysis of Potential Circumbinary Planet Hosts

Alix V. Freckelton, Daniel Sebastian, Annelies Mortier +29

Planets orbiting binary systems are relatively unexplored compared to those around single stars. Detections of circumbinary planets and planetary systems offer a first detailed vie…

astro-ph.EP2024★ 12 cited

TOI-837b is a Young Saturn-sized Exoplanet with a Massive 70 Core

Oscar Barragán, Haochuan Yu, Alix Violet Freckelton +10

We present an exhaustive photometric and spectroscopic analysis of TOI-837, a F9/G0 35 Myr young star, hosting a transiting exoplanet, TOI-837b, with an orbital period of 8.32d. Ut…

astro-ph.SR2023★ 11 cited

The EBLM Project XII. An eccentric, long-period eclipsing binary with a companion near the hydrogen-burning limit

Yasmin T. Davis, Amaury H. M. J. Triaud, Alix V. Freckelton +17

In the hunt for Earth-like exoplanets it is crucial to have reliable host star parameters, as they have a direct impact on the accuracy and precision of the inferred parameters for…