Results 81 to 90 of about 74,778 (164)

TESS Hunt for Young and Maturing Exoplanets (THYME). X. A Two-planet System in the 210 Myr MELANGE-5 Association

open access: yesThe Astronomical Journal
Young (
Pa Chia Thao   +37 more
doaj   +1 more source

In Search of Decay: An Analysis of Transit Times of Hot Jupiters in Main-sequence and Post-main-sequence Systems

open access: yesThe Astrophysical Journal
Tidal interactions are one of the primary drivers of orbital evolution for massive planets with short orbital periods. Tidal dissipation within host stars can cause the orbits of such planets to decay.
Noah Sodickson, Samuel Grunblatt
doaj   +1 more source

Orbital Decay of the Ultra-hot Jupiter TOI-2109b: Tidal Constraints and Transit-timing Analysis

open access: yesThe Astrophysical Journal
TOI-2109b is the ultra-hot Jupiter with the shortest orbital period (∼16 hr) yet discovered. At this close distance, strong tidal interactions can produce a significant exchange of angular momentum with the star.
Jaime A. Alvarado-Montes   +3 more
doaj   +1 more source

The TESS-Keck Survey. XVII. Precise Mass Measurements in a Young, High-multiplicity Transiting Planet System Using Radial Velocities and Transit Timing Variations

open access: yesThe Astronomical Journal
We present a radial velocity (RV) analysis of TOI-1136, a bright Transiting Exoplanet Survey Satellite (TESS) system with six confirmed transiting planets, and a seventh single-transiting planet candidate.
Corey Beard   +43 more
doaj   +1 more source

Mapping the Orbital Landscape of Perturbing Planet Solutions for Single-planet Systems with TTVs

open access: yesThe Astrophysical Journal
There are now thousands of single-planet systems observed to exhibit transit timing variations (TTVs), yet we largely lack any interpretation of the implied masses responsible for these perturbations.
Daniel A. Yahalomi, David Kipping
doaj   +1 more source

A Fourth Planet in the Kepler-51 System Revealed by Transit Timing Variations

open access: yesThe Astronomical Journal
Kepler-51 is a ≲1 Gyr old Sun-like star hosting three transiting planets with radii ≈6–9 R _⊕ and orbital periods ≈45–130 days. Transit timing variations (TTVs) measured with past Kepler and Hubble Space Telescope (HST) observations have been ...
Kento Masuda   +51 more
doaj   +1 more source

Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. IV. Long-term Doppler Spectroscopy for 11 Stars Thought to Host Cool Giant Exoplanets

open access: yesThe Astrophysical Journal Supplement Series
Discovering and characterizing exoplanets at the outer edge of the transit method’s sensitivity has proven challenging owing to geometric biases and the practical difficulties associated with acquiring long observational baselines.
Paul A. Dalba   +31 more
doaj   +1 more source

Investigating the Atmospheric Mass Loss of the Kepler-105 Planets Straddling the Radius Gap

open access: yesThe Astronomical Journal
An intriguing pattern among exoplanets is the lack of detected planets between approximately 1.5 R _⊕ and 2.0 R _⊕ . One proposed explanation for this “radius gap” is the photoevaporation of planetary atmospheres, a theory that can be tested by studying ...
Aaron Householder   +23 more
doaj   +1 more source

Tidally Heated Sub-Neptunes, Refined Planetary Compositions, and Confirmation of a Third Planet in the TOI-1266 System

open access: yesThe Astronomical Journal
TOI-1266 is a benchmark system of two temperate (
Michael Greklek-McKeon   +40 more
doaj   +1 more source

A Compact Multiplanet System of Three Transiting Giant Planets around TIC 118798035

open access: yesThe Astrophysical Journal Letters
We report the discovery and characterization of three transiting giant planets in the TIC 118798035 system. The three planets were identified as transiting candidates from data of the TESS mission and confirmed with ground-based photometric transit ...
Rafael Brahm   +22 more
doaj   +1 more source

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