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19922026
Showing 2022 · astro-ph.EPShow all

33 papers · 2 filters

astro-ph.EP2022★ 10 cited

A sub-Neptune planet around TOI-1695 discovered and characterized with SPIRou and TESS

F. Kiefer, G. Hébrard, E. Martioli +39

TOI-1695 is a V-mag=13 M-dwarf star from the northern hemisphere at 45pc from the Sun, around which a 3.134-day periodic transit signal from a super-Earth candidate was identif…

astro-ph.EP2022★ 27 cited

TOI-1695 b: A Water World Orbiting an Early M Dwarf in the Planet Radius Valley

Collin Cherubim, Ryan Cloutier, David Charbonneau +38

Characterizing the bulk compositions of transiting exoplanets within the M dwarf radius valley offers a unique means to establish whether the radius valley emerges from an atmosphe…

astro-ph.EP2022★ 17 cited

TOI-1075 b: A Dense, Massive, Ultra-Short Period Hot Super-Earth Straddling the Radius Gap

Zahra Essack, Avi Shporer, Jennifer A. Burt +29

Populating the exoplanet mass-radius diagram in order to identify the underlying relationship that governs planet composition is driving an interdisciplinary effort within the exop…

astro-ph.EP2022★ 6 cited

Independent validation of the temperate Super-Earth HD79211 b using HARPS-N

Victoria DiTomasso, Chantanelle Nava, Mercedes López-Morales +28

We present high-precision radial velocities (RVs) from the HARPS-N spectrograph for HD79210 and HD79211, two M0V members of a gravitationally-bound binary system. We detect a plane…

astro-ph.EP2022★ 21 cited

TOI-969: a late-K dwarf with a hot mini-Neptune in the desert and an eccentric cold Jupiter

J. Lillo-Box, D. Gandolfi, D. J. Armstrong +60

The current architecture of a given multi-planetary system is a key fingerprint of its past formation and dynamical evolution history. Long-term follow-up observations are key to c…

astro-ph.EP2022★ 89 cited

Occurrence rate of hot Jupiters around early-type M dwarfs based on TESS data

Tianjun Gan, Sharon X. Wang, Songhu Wang +26

We present an estimate of the occurrence rate of hot Jupiters (, days) around early-type M dwarfs based on stars obser…

astro-ph.EP2022★ 3 cited

A sub-Neptune transiting the young field star HD 18599 at 40 pc

Jerome P. de Leon, John H. Livingston, James S. Jenkins +67

Transiting exoplanets orbiting young nearby stars are ideal laboratories for testing theories of planet formation and evolution. However, to date only a handful of stars with age <…

astro-ph.EP2022★ 10 cited

An old warm Jupiter orbiting the metal-poor G-dwarf TOI-5542

Nolan Grieves, François Bouchy, Solène Ulmer-Moll +31

We report the discovery of a 1.32 planet orbiting on a 75.12 day period around the G3V Gyr old star TOI-5542 (TIC 4662…

astro-ph.EP2022★ 15 cited

The TEMPO Survey I: Predicting Yields of the Transiting Exosatellites, Moons, and Planets from a 30-day Survey of Orion with the Nancy Grace Roman Space Telescope

Mary Anne Limbach, Melinda Soares-Furtado, Andrew Vanderburg +12

We present design considerations for the Transiting Exosatellites, Moons, and Planets in Orion (TEMPO) Survey with the Nancy Grace Roman Space Telescope. This proposed 30-day surve…

astro-ph.EP2022★ 4 cited

TESS discovery of a super-Earth and two sub-Neptunes orbiting the bright, nearby, Sun-like star HD 22946

Luca Cacciapuoti, Laura Inno, Giovanni Covone +51

We report the Transiting Exoplanet Survey Satellite (TESS) discovery of a three-planet system around the bright Sun-like star HD~22946(V=8.3 mag),also known as TIC~100990000, locat…

astro-ph.EP2022★ 67 cited

Two temperate super-Earths transiting a nearby late-type M dwarf

L. Delrez, C. A. Murray, F. J. Pozuelos +82

In the age of JWST, temperate terrestrial exoplanets transiting nearby late-type M dwarfs provide unique opportunities for characterising their atmospheres, as well as searching fo…

astro-ph.EP2022★ 28 cited

TESS spots a mini-neptune interior to a hot saturn in the TOI-2000 system

Lizhou Sha, Andrew M. Vanderburg, Chelsea X. Huang +52

Hot jupiters (P < 10 d, M > 60 ) are almost always found alone around their stars, but four out of hundreds known have inner companion planets. These rare compan…

astro-ph.EP2022★ 3 cited

Validation of TOI-1221 b: A warm sub-Neptune exhibiting TTVs around a Sun-like star

Christopher R. Mann, David Lafrenière, Diana Dragomir +25

We present a validation of the long-period ( days) transiting sub-Neptune planet TOI-1221 b (TIC 349095149.01) around a Sun-like (m=10.5)…

astro-ph.EP2022★ 23 cited

TOI-2196 b: Rare planet in the hot Neptune desert transiting a G-type star

Carina M. Persson, Iskra Y. Georgieva, Davide Gandolfi +52

Highly irradiated planets in the hot Neptune desert are usually either small (R < 2 Rearth) and rocky or they are gas giants with radii of >1 Rjup. Here, we report on the intermedi…

astro-ph.EP2022★ 193 cited

Identification of carbon dioxide in an exoplanet atmosphere

The JWST Transiting Exoplanet Community Early Release Science Team, Eva-Maria Ahrer, Lili Alderson +129

Carbon dioxide (CO2) is a key chemical species that is found in a wide range of planetary atmospheres. In the context of exoplanets, CO2 is an indicator of the metal enrichment (i.…

astro-ph.EP2022★ 14 cited

Signatures of impact-driven atmospheric loss in large ensembles of exoplanets

Quadry Chance, Sarah Ballard, Keivan Stassun

The results of large-scale exoplanet transit surveys indicate that the distribution of small planet radii is likely sculpted by atmospheric loss. Several possible physical mechanis…

astro-ph.EP2022★ 9 cited

HD 56414 b: A Warm Neptune Transiting an A-type Star

Steven Giacalone, Courtney D. Dressing, Antonio García Muñoz +17

We report the discovery in TESS data and validation of HD 56414 b (a.k.a. TOI-1228 b), a Neptune-size () planet with a 29-day orbital period t…

astro-ph.EP2022★ 53 cited

TOI-1452 b: SPIRou and TESS reveal a super-Earth in a temperate orbit transiting an M4 dwarf

Charles Cadieux, René Doyon, Mykhaylo Plotnykov +53

Exploring the properties of exoplanets near or inside the radius valley provides insights on the transition from the rocky super-Earths to the larger, hydrogen-rich atmosphere mini…

astro-ph.EP2022★ 29 cited

Two long-period transiting exoplanets on eccentric orbits: NGTS-20 b (TOI-5152 b) and TOI-5153 b

S. Ulmer-Moll, M. Lendl, S. Gill +50

Long-period transiting planets provide the opportunity to better understand the formation and evolution of planetary systems. Their atmospheric properties remain largely unaltered…

astro-ph.EP2022★ 26 cited

Three new brown dwarfs and a massive hot Jupiter revealed by TESS around early-type stars

Psaridi A., Bouchy F., Lendl M. +40

The detection and characterization of exoplanets and brown dwarfs (BDs) around massive AF-type stars is essential to investigate and constrain the impact of stellar mass on planet…

astro-ph.EP2022★ 23 cited

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…

astro-ph.EP2022★ 36 cited

The Discovery of a Planetary Companion Interior to Hot Jupiter WASP-132 b

Benjamin J. Hord, Knicole D. Colón, Travis A. Berger +21

Hot Jupiters are generally observed to lack close planetary companions, a trend that has been interpreted as evidence for high-eccentricity migration. We present the discovery and…

astro-ph.EP2022★ 27 cited

Another Shipment of Six Short-Period Giant Planets from TESS

Joseph E. Rodriguez, Samuel N. Quinn, Andrew Vanderburg +119

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), TO…

astro-ph.EP2022

The TESS-Keck Survey. XI. Mass Measurements for Four Transiting sub-Neptunes orbiting K dwarf TOI-1246

Emma V. Turtelboom, Lauren M. Weiss, Courtney D. Dressing +78

Multi-planet systems are valuable arenas for investigating exoplanet architectures and comparing planetary siblings. TOI-1246 is one such system, with a moderately bright K dwarf (…