All Outputs (162)

Identification of the Top TESS Objects of Interest for Atmospheric Characterization of Transiting Exoplanets with JWST (2024)
Journal Article

JWST has ushered in an era of unprecedented ability to characterize exoplanetary atmospheres. While there are over 5000 confirmed planets, more than 4000 Transiting Exoplanet Survey Satellite (TESS) planet candidates are still unconfirmed and many of... Read More about Identification of the Top TESS Objects of Interest for Atmospheric Characterization of Transiting Exoplanets with JWST.

The EBLM Project– XI. Mass, radius, and effective temperature measurements for 23 M-dwarf companions to solar-type stars observed with <i>CHEOPS</i> (2024)
Journal Article

Observations of low-mass stars have frequently shown a disagreement between observed stellar radii and radii predicted by theoretical stellar structure models. This ‘radius inflation’ problem could have an impact on both stellar and exoplanetary scie... Read More about The EBLM Project– XI. Mass, radius, and effective temperature measurements for 23 M-dwarf companions to solar-type stars observed with <i>CHEOPS</i>.

TOI-544 b: a potential water-world inside the radius valley in a two-planet system (2023)
Journal Article

We report on the precise radial velocity follow-up of TOI-544 (HD 290498), a bright K star (V=10.8), which hosts a small transiting planet recently discovered by the Transiting Exoplanet Survey Satellite (TESS). We collected 122 high-resolution HARPS... Read More about TOI-544 b: a potential water-world inside the radius valley in a two-planet system.

Giant Outer Transiting Exoplanet Mass (GOT ’EM) Survey. III. Recovery and Confirmation of a Temperate, Mildly Eccentric, Single-transit Jupiter Orbiting TOI-2010 (2023)
Journal Article

Large-scale exoplanet surveys like the Transiting Exoplanet Survey Satellite (TESS) mission are powerful tools for discovering large numbers of exoplanet candidates. Single-transit events are commonplace within the resulting candidate list due to the... Read More about Giant Outer Transiting Exoplanet Mass (GOT ’EM) Survey. III. Recovery and Confirmation of a Temperate, Mildly Eccentric, Single-transit Jupiter Orbiting TOI-2010.

TOI-858 B b: A hot Jupiter on a polar orbit in a loose binary (2023)
Journal Article

We report the discovery of a hot Jupiter on a 3.28-day orbit around a 1.08 M⊙ G0 star that is the secondary component in a loose binary system. Based on follow-up radial velocity observations of TOI-858 B with CORALIE on the Swiss 1.2 m telescope and... Read More about TOI-858 B b: A hot Jupiter on a polar orbit in a loose binary.

TESS giants transiting giants V - Two hot Jupiters orbiting red-giant hosts (2023)
Journal Article

In this work we present the discovery and confirmation of two hot Jupiters orbiting red-giant stars, TOI-4377 b and TOI-4551 b, observed by TESS in the southern ecliptic hemisphere and later followed-up with radial-velocity (RV) observations. For TOI... Read More about TESS giants transiting giants V - Two hot Jupiters orbiting red-giant hosts.

A hot mini-Neptune and a temperate, highly eccentric sub-Saturn around the bright K-dwarf TOI-2134 (2023)
Journal Article

We present the characterisation of an inner mini-Neptune in a 9.2292005±0.0000063 day orbit and an outer mono-transiting sub-Saturn planet in a 95.50$^{+0.36}_{-0.25}$ day orbit around the moderately active, bright (mv = 8.9 mag) K5V star TOI-2134. B... Read More about A hot mini-Neptune and a temperate, highly eccentric sub-Saturn around the bright K-dwarf TOI-2134.

Two mini-Neptunes transiting the adolescent K-star HIP 113103 confirmed with TESS and CHEOPS (2023)
Journal Article

We report the discovery of two mini-Neptunes in near 2:1 resonance orbits (P = 7.610303 d for HIP 113103 b and P = 14.245651 d for HIP 113103 c ) around the adolescent K-star HIP 113103 (TIC 121490076 ). The planet system was first identified from th... Read More about Two mini-Neptunes transiting the adolescent K-star HIP 113103 confirmed with TESS and CHEOPS.

TOI-332 b: A super dense Neptune found deep within the Neptunian desert (2023)
Journal Article

To date, thousands of planets have been discovered, but there are regions of the orbital parameter space that are still bare. An example is the short period and intermediate mass/radius space known as the ‘Neptunian desert’, where planets should be e... Read More about TOI-332 b: A super dense Neptune found deep within the Neptunian desert.

A Mini-Neptune Orbiting the Metal-poor K Dwarf BD+29 2654 (2023)
Journal Article

We report the discovery and Doppler mass measurement of a 7.4 days 2.3 R ⊕ mini-Neptune around a metal-poor K dwarf BD+29 2654 (TOI-2018). Based on a high-resolution Keck/HIRES spectrum, the Gaia parallax, and multiwavelength photometry from the UV t... Read More about A Mini-Neptune Orbiting the Metal-poor K Dwarf BD+29 2654.

Three low-mass companions around aged stars discovered by TESS (2023)
Journal Article

We report the discovery of three transiting low-mass companions to aged stars: a brown dwarf (TOI-2336b) and two objects near the hydrogen burning mass limit (TOI-1608b and TOI-2521b). These three systems were first identified using data from the Tra... Read More about Three low-mass companions around aged stars discovered by TESS.

Radial-velocity discovery of a second planet in the TOI-1338/BEBOP-1 circumbinary system (2023)
Journal Article

Another shipment of six short-period giant planets from TESS (2023)
Journal Article

We present the discovery and characterization of six short-period, transiting giant planets from NASA's Transiting Exoplanet Survey Satellite (TESS) -- TOI-1811 (TIC 376524552), TOI-2025 (TIC 394050135), TOI-2145 (TIC 88992642), TOI-2152 (TIC 3953932... Read More about Another shipment of six short-period giant planets from TESS.

Validation of TOI-1221 b: A Warm Sub-Neptune Exhibiting Transit Timing Variations around a Sun-like Star (2023)
Journal Article

We present a validation of a long-period (91.68278 (+0.00032)(-0.00041) days) transiting sub-Neptune planet, TOI-1221 b (TIC 349095149.01), around a Sun-like (m(V)= 10.5) star. This is one of the few known exoplanets with a period >50 days, and belon... Read More about Validation of TOI-1221 b: A Warm Sub-Neptune Exhibiting Transit Timing Variations around a Sun-like Star.

The young mini-Neptune HD 207496b that is either a naked core or on the verge of becoming one (2023)
Journal Article

Aims. We report the discovery and characterisation of the transiting mini-Neptune HD 207496 b (TOI-1099) as part of a large programme that aims to characterise naked core planets. Methods. We obtained HARPS spectroscopic observations, one grou... Read More about The young mini-Neptune HD 207496b that is either a naked core or on the verge of becoming one.

TOI-4562b: A Highly Eccentric Temperate Jupiter Analog Orbiting a Young Field Star (2023)
Journal Article

We report the discovery of TOI-4562b (TIC-349576261), a Jovian planet orbiting a young F7V-type star, younger than the Praesepe/Hyades clusters (

The TESS Grand Unified Hot Jupiter Survey. II. Twenty New Giant Planets* (2023)
Journal Article

NASA's Transiting Exoplanet Survey Satellite (TESS) mission promises to improve our understanding of hot Jupiters by providing an all-sky, magnitude-limited sample of transiting hot Jupiters suitable for population studies. Assembling such a sample r... Read More about The TESS Grand Unified Hot Jupiter Survey. II. Twenty New Giant Planets*.

The EBLM project X. benchmark masses, radii and temperatures for two fully convective M-dwarfs using K2 (2023)
Journal Article

M-dwarfs are the most abundant stars in the galaxy and popular targets for exoplanet searches. However, their intrinsic faintness and complex spectra inhibit precise characterisation. We only know of dozens of M-dwarfs with fundamental parameters of... Read More about The EBLM project X. benchmark masses, radii and temperatures for two fully convective M-dwarfs using K2.

TOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf (2023)
Journal Article

We present the discovery of two exoplanets transiting TOI-836 (TIC 440887364) using data from TESS Sector 11 and Sector 38. TOI-836 is a bright (T = 8.5?mag), high proper motion (~200?mas?yr-1), low metallicity ([Fe/H]˜-0.28) K-dwarf with a mass of 0... Read More about TOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf.

TOI-1075 b: A Dense, Massive, Ultra-short-period Hot Super-Earth Straddling the Radius Gap (2023)
Journal Article

Populating the exoplanet mass–radius diagram in order to identify the underlying relationship that governs planet composition is driving an interdisciplinary effort within the exoplanet community. The discovery of hot super-Earths—a high-temperature,... Read More about TOI-1075 b: A Dense, Massive, Ultra-short-period Hot Super-Earth Straddling the Radius Gap.