207 citations · 1.7k across the 55 of their papers we have counts for
38 papers · 1 filter
CHEOPS photometry from 2024 reveals a reversal in the transit-timing variations of AU Mic c
Z. Garai, Gy. M. Szabó, D. Gandolfi +90
We present new CHEOPS transit observations of AU Mic b and AU Mic c obtained between June and September 2024, extending the baseline of transit-timing measurements of this young pl…
An Ultra-Short Period Super-Earth and a Sub-Neptune Orbiting the K dwarf TOI-4311
Yoshi Nike Emilia Eschen, Thomas G. Wilson, Andrew Collier Cameron +95
We report the discovery and characterisation of the multi-planetary system around TOI-4311, a K dwarf kinematically between the Galactic thick disk and Hercules stream. TOI-4311 ho…
The PLATO field selection process III. Selection of the Prime Sample for the LOPS2 field
V. Nascimbeni, G. Piotto, V. Granata +30
The PLanetary Transits and Oscillations of stars (PLATO) mission will begin its four-year nominal mission in early 2027 by monitoring its Long-duration Observation Phase field at S…
A 43 day transiting Neptune and two 25 day Saturns from TESS, NGTS and ASTEP
Alicia Kendall, Solène Ulmer-Moll, Samuel Gill +53
Beyond orbital periods of 10 days, there is a dearth of known transiting gas giants. On longer orbits, planets are less affected by their host star, and become ideal probes of plan…
High five from ASTEP: Three validated planets and two eclipsing binaries in a diverse set of long-period candidates
Erika Rea, Maximilian N. Günther, George Dransfield +44
We present the analysis of five long-period TESS Objects of Interest (TOIs), all orbiting Sun-like stars, with orbital periods exceeding one month. Initially identified by the Tran…
HD 35843: A Sun-like star hosting a long period sub-Neptune and inner super-Earth
Katharine Hesse, Ismael Mireles, François Bouchy +52
We report the discovery and confirmation of two planets orbiting the metal-poor Sun-like star, HD 35843 (TOI 4189). HD 35843 c is a temperate sub-Neptune transiting planet with an…
Radio Signatures of Star-Planet Interactions, Exoplanets, and Space Weather
J. R. Callingham, B. J. S. Pope, R. D. Kavanagh +22
Radio detections of stellar systems provide a window onto stellar magnetic activity and the space weather conditions of extrasolar planets, information that is difficult to attain…
TOI-2490b- The most eccentric brown dwarf transiting in the brown dwarf desert
Beth A. Henderson, Sarah L. Casewell, Andrés Jordán +40
We report the discovery of the most eccentric transiting brown dwarf in the brown dwarf desert, TOI02490b. The brown dwarf desert is the lack of brown dwarfs around main sequence s…
Detection of an Earth-sized exoplanet orbiting the nearby ultracool dwarf star SPECULOOS-3
Michaël Gillon, Peter P. Pedersen, Benjamin V. Rackham +81
Located at the bottom of the main sequence, ultracool dwarf stars are widespread in the solar neighbourhood. Nevertheless, their extremely low luminosity has left their planetary p…
Planet Hunters NGTS: New Planet Candidates from a Citizen Science Search of the Next Generation Transit Survey Public Data
Sean M. O'Brien, Megan E. Schwamb, Samuel Gill +35
We present the results from the first two years of the Planet Hunters NGTS citizen science project, which searches for transiting planet candidates in data from the Next Generation…
Three Warm Jupiters around Solar-analog stars detected with TESS
Jan Eberhardt, Melissa J. Hobson, Thomas Henning +32
We report the discovery and characterization of three giant exoplanets orbiting solar-analog stars, detected by the \tess space mission and confirmed through ground-based photometr…
CHEOPS observations of KELT-20 b/MASCARA-2 b: An aligned orbit and signs of variability from a reflective dayside
V. Singh, G. Scandariato, A. M. S. Smith +87
Occultations are windows of opportunity to indirectly peek into the dayside atmosphere of exoplanets. High-precision transit events provide information on the spin-orbit alignment…
TESS Duotransit Candidates from the Southern Ecliptic Hemisphere
Faith Hawthorn, Sam Gill, Daniel Bayliss +20
Discovering transiting exoplanets with long orbital periods allows us to study warm and cool planetary systems with temperatures similar to the planets in our own Solar system. The…
A 1.55 R habitable-zone planet hosted by TOI-715, an M4 star near the ecliptic South Pole
Georgina Dransfield, Mathilde Timmermans, Amaury H. M. J. Triaud +48
A new generation of observatories is enabling detailed study of exoplanetary atmospheres and the diversity of alien climates, allowing us to seek evidence for extraterrestrial biol…
Two Warm Super-Earths Transiting the Nearby M Dwarf TOI-2095
Elisa V. Quintana, Emily A. Gilbert, Thomas Barclay +55
We report the detection and validation of two planets orbiting TOI-2095 (TIC 235678745). The host star is a 3700K M1V dwarf with a high proper motion. The star lies at a distance o…
A Second Earth-Sized Planet in the Habitable Zone of the M Dwarf, TOI-700
Emily A. Gilbert, Andrew Vanderburg, Joseph E. Rodriguez +29
We report the discovery of TOI-700 e, a 0.95 R planet residing in the Optimistic Habitable Zone (HZ) of its host star. This discovery was enabled by multiple years of moni…
Spinning up a Daze: TESS Uncovers a Hot Jupiter orbiting the Rapid-Rotator TOI-778
Jake Clark, Brett Addison, Jack Okumura +68
NASA's Transiting Exoplanet Survey Satellite (TESS) mission, has been uncovering a growing number of exoplanets orbiting nearby, bright stars. Most exoplanets that have been discov…
Hubble Space Telescope transmission spectroscopy for the temperate sub-Neptune TOI-270d: a possible hydrogen-rich atmosphere containing water vapour
Thomas Mikal-Evans, Nikku Madhusudhan, Jason Dittmann +6
TOI-270d is a temperate sub-Neptune discovered by the Transiting Exoplanet Survey Satellite (TESS) around a bright (J=9.1mag) M3V host star. With an approximate radius of 2RE and e…
NGTS-21b: An Inflated Super-Jupiter Orbiting a Metal-poor K dwarf
Douglas R. Alves, James S. Jenkins, Jose I. Vines +29
We report the discovery of NGTS-21b, a massive hot Jupiter orbiting a low-mass star as part of the Next Generation Transit Survey (NGTS). The planet has a mass and radius of $2.36…
TOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf
Faith Hawthorn, Daniel Bayliss, Thomas G. Wilson +137
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 ( mag), high proper motion…
HD 28109 hosts a trio of transiting Neptunian planets including a near-resonant pair, confirmed by ASTEP from Antarctica
Georgina Dransfield, Amaury H. M. J. Triaud, Tristan Guillot +28
We report on the discovery and characterisation of three planets orbiting the F8 star HD~28109, which sits comfortably in \tess's continuous viewing zone. The two outer planets hav…
TOI-712: a system of adolescent mini-Neptunes extending to the habitable zone
Sydney Vach, Samuel N. Quinn, Andrew Vanderburg +40
As an all-sky survey, NASA's mission is able to detect the brightest and rarest types of transiting planetary systems, including young planets that enable study of the evolu…
NGTS-19b : A high mass transiting brown dwarf in a 17-day eccentric orbit
Jack S. Acton, Michael R. Goad, Matthew R. Burleigh +34
We present the discovery of NGTS-19b, a high mass transiting brown dwarf discovered by the Next Generation Transit Survey (NGTS). We investigate the system using follow up photomet…
Development of the SPECULOOS exoplanet search project
D. Sebastian, P. P. Pedersen, C. A. Murray +20
SPECULOOS (Search for habitable Planets EClipsing ULtra-cOOl Stars) aims to perform a transit search on the nearest (pc) ultracool (K) dwarf stars. The project's main m…