Results 31 to 40 of about 625 (187)
Revised Properties and Dynamical History for the HD 17156 System
The Astronomical Journal, 2023 From the thousands of known exoplanets, those that transit bright host stars provide the greatest accessibility toward detailed system characterization.
Stephen R. Kane +9 more
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A new method for finding nearby white dwarfs exoplanets and detecting biosignatures
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT We demonstrate that the James Webb Space Telescope (JWST) can detect infrared (IR) excess from the blended light spectral energy distribution of spatially unresolved terrestrial exoplanets orbiting nearby white dwarfs. We find that JWST is capable of detecting warm (habitable-zone; Teq = 287 K) Earths or super-Earths and hot ...
Mary Anne Limbach +7 more
openaire +2 more sources
TOI-4600 b and c: Two Long-period Giant Planets Orbiting an Early K Dwarf
The Astrophysical Journal Letters, 2023 We report the discovery and validation of two long-period giant exoplanets orbiting the early K dwarf TOI-4600 ( V = 12.6, T = 11.9), first detected using observations from the Transiting Exoplanet Survey Satellite (TESS) by the TESS Single Transit ...
Ismael Mireles +33 more
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Hyades Member K2-136c: The Smallest Planet in an Open Cluster with a Precisely Measured Mass
The Astronomical Journal, 2023 K2-136 is a late-K dwarf (0.742 ± 0.039 M _⊙ ) in the Hyades open cluster with three known, transiting planets and an age of 650 ± 70 Myr. Analyzing K2 photometry, we found that planets K2-136b, c, and d have periods of 8.0, 17.3, and 25.6 days and radii
Andrew W. Mayo +41 more
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The Prospect of Detecting Volcanic Signatures on an ExoEarth Using Direct Imaging
The Astronomical Journal, 2023 The James Webb Space Telescope (JWST) has provided the first opportunity of studying the atmospheres of terrestrial exoplanets and estimating their surface conditions.
Colby M. Ostberg +8 more
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The Comparison of Five Methods of Detecting Exoplanets
Highlights in Science, Engineering and Technology, 2023 Detecting exoplanets has become a hot topic, where various detection scenarios have been proposed. Five of these methods have all found more than 50 exoplanets, which are the transit method, the radial velocity method, the microlensing method, the imaging method, and the timing method.
openaire +1 more source
The Astronomical Journal, 2023 Wavelets are waveform functions that describe transient and unstable variations, such as noise. In this work, we study the advantages of discrete and continuous wavelet transforms (DWTs and CWTs) of microlensing data to denoise them and extract their ...
Sedighe Sajadian, Hossein Fatheddin
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Surprise Nondetection of Upsilon Andromedae b with MIRC-X and MYSTIC at the CHARA Array
The Astronomical JournalGround-based long baseline interferometry is a powerful tool for characterizing exoplanets that are too close to their host star to be imaged with single-dish telescopes. The CHARA Array can resolve companions down to 0.5 mas, allowing us in principle to
Tyler Gardner +13 more
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The Astronomical Journal, 2023 Most existing exoplanets are discovered using validation techniques rather than being confirmed by complementary observations. These techniques generate a score that is typically the probability of the transit signal being an exoplanet ( y ( x ...
Hamed Valizadegan +5 more
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Identifying Exoplanet Candidates Using WaveCeptionNet
The Astronomical JournalIn this study, we propose a wavelet-transform-based light curve representation method and a CNN model based on Inception-v3 for fast classification of light curves, enabling the quick discovery of potentially interesting targets from massive data ...
Huiping Liao +4 more
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