Results 61 to 70 of about 1,764,603 (268)

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, Courtney D. Dressing, Andrew Vanderburg, Charles D. Fortenbach, Florian Lienhard, Luca Malavolta, Annelies Mortier, Alejandro Núñez, Tyler Richey-Yowell, Emma V. Turtelboom, Aldo S. Bonomo, David W. Latham, Mercedes López-Morales, Evgenya Shkolnik, Alessandro Sozzetti, Marcel A. Agüeros, Luca Borsato, David Charbonneau, Rosario Cosentino, Stephanie T. Douglas, Xavier Dumusque, Adriano Ghedina, Rose Gibson, Valentina Granata, Avet Harutyunyan, R. D. Haywood, Gaia Lacedelli, Vania Lorenzi, Antonio Magazzù, A. F. Martinez Fiorenzano, Giuseppina Micela, Emilio Molinari, Marco Montalto, Domenico Nardiello, Valerio Nascimbeni, Isabella Pagano, Giampaolo Piotto, Lorenzo Pino, Ennio Poretti, Gaetano Scandariato, Stephane Udry, Lars A. Buchhave   +41 more
doaj   +1 more source

Search for possible exomoons with FAST telescope

, 2017
Our knowledge of the Solar System, encourages us to beleive that we might expect exomoons to be present around some of the known exoplanets. With present hardware and existing optical astronomy methods we shall not be able to find exomoons at least 10 ...
Lukic, Dragan
core   +1 more source

Exoplanet albedo spectra and colors as a function of planet phase, separation, and metallicity [PDF]

, 2010
First generation optical coronagraphic telescopes will obtain images of cool gas and ice giant exoplanets around nearby stars. The albedo spectra of exoplanets at planet-star separations larger than about 1 AU are dominated by reflected light to beyond 1
Ackerman, Alibert, Beichman, Boss, Brown, Burrows, Burrows, Burrows, Chapman, Chapman, Conrath, Dlugach, Dodson-Robinson, Dyudina, Fortney, Fortney, Fortney, Fortney, Fortney, Fortney, Freedman, Gautier, Gautier, Guillot, Guillot, Guyon, Ida, Jonathan J. Fortney, Kasdin, Kerri L. Cahoy, Kratter, Kuchner, Lafreniere, Liou, Lodders, Lodders, Lodders, Mark S. Marley, Marley, Marley, Marley, Marley, Marois, Mawet, Mihilas, Rauscher, Saumon, Saumon, Seager, Sobolev, Spiegel, Stephens, Sudarsky, Sudarsky, Sudarsky, Traub, Veras, West, Zahnle   +58 more
core   +2 more sources

Multiplicity Boost of Transit Signal Classifiers: Validation of 69 New Exoplanets using the Multiplicity Boost of ExoMiner

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, Miguel J. S. Martinho, Jon M. Jenkins, Douglas A. Caldwell, Joseph D. Twicken, Stephen T. Bryson   +5 more
doaj   +1 more source

Surprise Nondetection of Upsilon Andromedae b with MIRC-X and MYSTIC at the CHARA Array

The Astronomical Journal
Ground-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, John D. Monnier, Stefan Kraus, Emily Rauscher, Isaac Malsky, Jean-Baptiste Le Bouquin, Narsireddy Anugu, Sorabh Chhabra, Isabelle Codron, Claire L. Davies, Noura Ibrahim, Cyprien Lanthermann, Gail Schaefer, Benjamin R. Setterholm   +13 more
doaj   +1 more source

Identifying Exoplanet Candidates Using WaveCeptionNet

The Astronomical Journal
In 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, Guangyue Ren, Xinghao Chen, Yuxiang Li, Guangwei Li   +4 more
doaj   +1 more source

Company for the Ultra-high Density, Ultra-short Period Sub-Earth GJ 367 b: Discovery of Two Additional Low-mass Planets at 11.5 and 34 Days

The Astrophysical Journal Letters, 2023
GJ 367 is a bright ( V ≈ 10.2) M1 V star that has been recently found to host a transiting ultra-short period sub-Earth on a 7.7 hr orbit. With the aim of improving the planetary mass and radius and unveiling the inner architecture of the system, we ...
Elisa Goffo, Davide Gandolfi, Jo Ann Egger, Alexander J. Mustill, Simon H. Albrecht, Teruyuki Hirano, Oleg Kochukhov, Nicola Astudillo-Defru, Oscar Barragan, Luisa M. Serrano, Artie P. Hatzes, Yann Alibert, Eike Guenther, Fei Dai, Kristine W. F. Lam, Szilárd Csizmadia, Alexis M. S. Smith, Luca Fossati, Rafael Luque, Florian Rodler, Mark L. Winther, Jakob L. Rørsted, Javier Alarcon, Xavier Bonfils, William D. Cochran, Hans J. Deeg, Jon M. Jenkins, Judith Korth, John H. Livingston, Annabella Meech, Felipe Murgas, Jaume Orell-Miquel, Hannah L. M. Osborne, Enric Palle, Carina M. Persson, Seth Redfield, George R. Ricker, Sara Seager, Roland Vanderspek, Vincent Van Eylen, Joshua N. Winn   +40 more
doaj   +1 more source

Transit Photometry as an Exoplanet Discovery Method

, 2018
Photometry with the transit method has arguably been the most successful exoplanet discovery method to date. A short overview about the rise of that method to its present status is given.
A Collier Cameron, A Collier Cameron, A Giménez, A Léger, A Santerne, A Shporer, A Udalski, AMS Smith, Andrew Collier Cameron, B Tingley, BE McArthur, C Elachi, C Moutou, C Régulo, CA Haswell, D Bayliss, D Charbonneau, D Charbonneau, D Koch, D Queloz, D. J. Christian, DL Pollacco, DM Kipping, DW Latham, DW Latham, F Bouchy, F Pont, FT O’Donovan, G Kovács, G Kovács, G Torres, G Torres, G Torres, GR Ricker, GW Henry, GÁ Bakos, H Rauer, H. Parviainen, HJ Deeg, HJ Deeg, HJ Deeg, HJ Deeg, IAG Snellen, J Scalo, J. Cabrera, JA Dittmann, Jason F. Rowe, Jeffrey L. Coughlin, JJ Lissauer, JJ Lissauer, JJ Lissauer, JM Almenara, JM Jenkins, JM Jenkins, JM Jenkins, JN Winn, JT Wright, K Horne, K Mandel, KC Sahu, LR Doyle, M Gillon, M Konacki, MN Günther, MN Günther, NM Batalha, O Struve, O Tamuz, P Barge, PJ Wheatley, PJ Wheatley, R Alonso, R Alonso, R Alonso, RF Díaz, RL Gilliland, RL Gilliland, S Aigrain, S Aigrain, S Jha, S Seager, SB Howell, Smith AMS WASP Consortium, TD Morton, TD Morton, TG Beatty, TM Brown, WJ Borucki, ZK Berta   +88 more
core   +1 more source

Exoplanets - search methods, discoveries, and prospects for astrobiology [PDF]

, 2008
Whereas the Solar System has Mars and Europa as the best candidates for finding fossil/extant life as we know it - based on complex carbon compounds and liquid water - the 263 (non-pulsar) planetary systems around other stars as known at 15 September ...
Jones, Barrie W
core   +2 more sources

PERICLES: A Set of Empirical Rotational Isochrones Modeled on Cool Dwarfs in Open Clusters and Wide Binaries

Astronomische Nachrichten, EarlyView.
ABSTRACT Isochrones, equal‐age curves, are widely used in astrophysics to estimate stellar ages. Classical stellar parameters are, however, very limited in their usability for main sequence stars because of their weak age‐dependence. Here, rotation period measurements provide complementary information.
David Gruner, Sydney A. Barnes
wiley   +1 more source