Results 121 to 130 of about 2,057,964 (253)
The Astronomical JournalWe present new VLTI/GRAVITY astrometry and updated orbit fits for the directly imaged companions YSES 1 b and HR 2562 B, substellar objects straddling the planet–brown-dwarf boundary.
Jonathan Roberts +22 more
doaj +1 more source
Characterizing Exoplanet Habitability
A habitable exoplanet is a world that can maintain stable liquid water on its surface. Techniques and approaches to characterizing such worlds are essential, as performing a census of Earth-like planets that may or may not have life will inform our ...
Robinson, Tyler D.
core +1 more source
A Pair of Dynamically Interacting Sub-Neptunes around TOI-6054
The Astronomical JournalWe confirm the planetary nature of a pair of transiting sub-Neptune exoplanets orbiting the bright F-type subgiant star TOI-6054 ( V = 8.02, K = 6.673) as a part of the OrCAS radial velocity survey using WIYN/NEID observations. We find that TOI-6054b and
Maxwell A. Kroft +33 more
doaj +1 more source
Revised Masses for Low-density Planets Orbiting the Disordered M-dwarf System TOI-1266
The Astronomical JournalWe present an analysis of 126 new radial velocity measurements from the MAROON-X spectrograph to investigate the TOI-1266 system, which hosts two known transiting sub-Neptunes at 10.8 and 18.8 days.
Dakotah Tyler +7 more
doaj +1 more source
The Astronomical JournalHot Jupiters were many of the first exoplanets discovered in the 1990s, but in the decades since their discovery the mysteries surrounding their origins have remained. Here we present nine new hot Jupiters (TOI-1855 b, TOI-2107 b, TOI-2368 b, TOI-3321 b,
Jack Schulte +74 more
doaj +1 more source
UNH Observatory Exoplanet Transit Depth Limit [PDF]
, 2019 Using the University of New Hampshire Observatory, we performed multiple exoplanet transits observations on a variety of systems. Of these transits, those performed with ideal weather conditions were chosen to do extensive analysis on. The transit chosen
Larose, Nicholas R
core +1 more source
Single Transit Detection in Kepler with Machine Learning and Onboard Spacecraft Diagnostics
The Astronomical JournalExoplanet discovery at long orbital periods requires reliably detecting individual transits without additional information about the system. Common techniques, like phase folding of light curves and periodogram analysis of radial velocity data, are more ...
Matthew T. Hansen, Jason A. Dittmann
doaj +1 more source
Searching for Giant Exoplanets around M-dwarf Stars (GEMS) I: Survey Motivation
The Astronomical JournalRecent discoveries of transiting giant exoplanets around M-dwarf stars (GEMS), aided by the all-sky coverage of TESS, are starting to stretch theories of planet formation through the core-accretion scenario.
Shubham Kanodia +15 more
doaj +1 more source
Revised Architecture and Two New Super-Earths in the HD 134606 Planetary System
The Astronomical JournalMultiplanet systems exhibit a diversity of architectures that diverge from the solar system and contribute to the topic of exoplanet demographics. Radial velocity (RV) surveys form a crucial component of exoplanet surveys, as their long observational ...
Zhexing Li +18 more
doaj +1 more source
The Astronomical JournalWe present the discovery and characterization of TOI-4364b, a young mini-Neptune in the tidal tails of the Hyades cluster, identified through TESS transit observations and ground-based follow-up photometry.
Adam Distler +21 more
doaj +1 more source