Results 111 to 120 of about 1,148 (222)

GJ 238 b: A 0.57 Earth Radius Planet Orbiting an M2.5 Dwarf Star at 15.2 pc

The Astronomical Journal
We report the discovery of the transiting planet GJ 238 b, with a radius of 0.566 ± 0.014 R _⊕ (1.064 ± 0.026 times the radius of Mars) and an orbital period of 1.74 days. The transit signal was detected by the TESS mission and designated TOI-486.01. The
Evan Tey, Avi Shporer, Zifan Lin, Keivan G. Stassun, Jack J. Lissauer, Coel Hellier, Karen A. Collins, Kevin I. Collins, Geof Wingham, Howard M. Relles, Franco Mallia, Giovanni Isopi, John F. Kielkopf, Dennis M. Conti, Richard P. Schwarz, Aldo Zapparata, Steven Giacalone, Elise Furlan, Zachary D. Hartman, Steve B. Howell, Nicholas J. Scott, Carl Ziegler, César Briceño, Nicholas Law, Andrew W. Mann, David Charbonneau, Zahra Essack, Stephanie Striegel, George R. Ricker, Roland Vanderspek, Sara Seager, Joshua N. Winn, Jon M. Jenkins   +32 more
doaj   +1 more source

TOI-6695: A Pair of Near-resonant Massive Planets Observed with TESS from the WINE Survey

The Astronomical Journal
We present the discovery and characterization of a pair of warm Jovian-mass exoplanets orbiting the Sun-like star TOI-6695, based on Transiting Exoplanet Survey Satellite (TESS) transits and precise radial velocity (RV) measurements obtained with FEROS ...
Jan Eberhardt, Trifon Trifonov, Thomas Henning, Marcelo Tala Pinto, Rafael Brahm, Andrés Jordán, Nestor Espinoza, Matías I. Jones, Melissa J. Hobson, Felipe I. Rojas, Martin Schlecker, Lorena Acuña, Remo Burn, Gavin Boyle, Rodrigo Leiva, James McCormac, Nicholas Dunckel, Diana Dragomir, Jeffrey D. Crane, Stephen Shectman, Johanna K. Teske, David Osip, Arvind F. Gupta, Solène Ulmer-Moll, François Bouchy, Monika Lendl, Davide Gandolfi, George R. Ricker, Jon M. Jenkins, Sara Seager, Joshua N. Winn   +30 more
doaj   +1 more source

Concealing Circumbinary Planets with Tidal Shrinkage

The Astrophysical Journal
Of the 14 transiting planets that have been detected orbiting eclipsing binaries (“circumbinary planets”), none have been detected with stellar binary orbital periods shorter than 7 days, despite such binaries existing in abundance.
Saahit Mogan, J.J. Zanazzi
doaj   +1 more source

Optical Follow up Photometry of the Transiting Extrasolar Planet XO-2 [PDF]

, 2008
J. M. Fernández, Matthew J. Holman, Joshua N. Winn   +2 more
openalex   +1 more source

A Transiting Giant on a 7.7 yr Orbit Revealed by Transit Timing Variations in the TOI-201 System

The Astrophysical Journal Letters
We report the detection and characterization of TOI-201 c, a long-period transiting companion to the warm Jupiter TOI-201 b. Its presence was first inferred from high-amplitude transit timing variations (TTVs) in TOI-201 b, pointing to a massive outer ...
Gracjan Maciejewski, Weronika Łoboda
doaj   +1 more source

TOI-4504: Exceptionally Large Transit Timing Variations Induced by Two Resonant Warm Gas Giants in a Three-planet System

The Astrophysical Journal Letters
We present a joint analysis of transit timing variations (TTVs) and Doppler data for the transiting exoplanet system TOI-4504. TOI-4504 c is a warm Jupiter-mass planet that exhibits the largest known TTVs, with a peak-to-node amplitude of ∼2 days, the ...
Michaela Vítková, Rafael Brahm, Trifon Trifonov, Petr Kabáth, Andrés Jordán, Thomas Henning, Melissa J. Hobson, Jan Eberhardt, Marcelo Tala Pinto, Felipe I. Rojas, Nestor Espinoza, Martin Schlecker, Matías I. Jones, Maximiliano Moyano, Susana Eyheramendy, Carl Ziegler, Jack J. Lissauer, Andrew Vanderburg, Karen A. Collins, Bill Wohler, David Watanabe, George R. Ricker, Roland Vanderspek, Sara Seager, Joshua N. Winn, Jon M. Jenkins, Marek Skarka   +26 more
doaj   +1 more source

WARMSPITZERPHOTOMETRY OF THE TRANSITING EXOPLANETS CoRoT-1 AND CoRoT-2 AT SECONDARY ECLIPSE [PDF]

, 2010
Drake Deming, Heather A. Knutson, Eric Agol, Jean-Michel Désert, Adam Burrows, Jonathan J. Fortney, David Charbonneau, Nicolas B. Cowan, Gregory Laughlin, Jonathan Langton, Adam P. Showman, Nikole K. Lewis   +11 more
openalex   +1 more source

Quantifying the Effect of Short-timescale Stellar Activity Upon Transit Detection in M Dwarfs

The Astronomical Journal
M dwarf stars comprise 70%–80% of the galaxy's stars and host most of its rocky planets. They also differ from Sunlike stars in that they are “active” for billions of years or more: rotating quickly, flaring often, and emitting large amounts of UV and X ...
Dana Clarice Yaptangco, Sarah Ballard, Jason Dittmann, Mariangel Albornoz   +3 more
doaj   +1 more source

NON-DETECTION OF PREVIOUSLY REPORTED TRANSITS OF HD 97658b WITH MOST PHOTOMETRY [PDF]

, 2012
Diana Dragomir, J. M. Matthews, Andrew W. Howard, V. Antoci, Gregory W. Henry, D. B. Guenther, John Asher Johnson, R. Kuschnig, Geoffrey W. Marcy, A. F. J. Moffat, Jason F. Rowe, S. M. Ruciński, Dimitar Sasselov, W. W. Weiß   +13 more
openalex   +1 more source

Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. VI. Confirmation of a Long-period Giant Planet Discovered with a Single TESS Transit

The Astronomical Journal
We report the discovery and confirmation of TOI-4465 b, a 1.25 R _J ${}_{-0.07{R}_{{\rm{J}}}}^{+0.08{R}_{{\rm{J}}}}$ , 5.89 M _J  ± 0.26 M _J giant planet orbiting a G dwarf star at d  ≃ 122 pc.
Zahra Essack, Diana Dragomir, Paul A. Dalba, Matthew P. Battley, David R. Ciardi, Karen A. Collins, Steve B. Howell, Matias I. Jones, Stephen R. Kane, Eric E. Mamajek, Christopher R. Mann, Ismael Mireles, Dominic Oddo, Lauren A. Sgro, Keivan G. Stassun, Solene Ulmer-Moll, Cristilyn N. Watkins, Samuel W. Yee, Carl Ziegler, Allyson Bieryla, Ioannis Apergis, Khalid Barkaoui, Rafael Brahm, Edward M. Bryant, Thomas M. Esposito, Pedro Figueira, Benjamin J. Fulton, Samuel Gill, Andrew W. Howard, Howard Isaacson, Alicia Kendall, Nicholas Law, Michael B. Lund, Andrew W. Mann, Rachel A. Matson, Felipe Murgas, Enric Palle, Samuel N. Quinn, Alexandre Revol, Suman Saha, Richard P. Schwarz, Ramotholo Sefako, Avi Shporer, Ivan A. Strakhov, Steven Villanueva Jr., George R. Ricker, Roland Vanderspek, David W. Latham, Sara Seager, Joshua N. Winn, Pau Bosch-Cabot, Kevin I. Collins, Raquel Forés-Toribio, Fabian Rodriguez Frustagia, Eric Girardin, Ian J. Helm, Pablo Lewin, Jose A. Muñoz, Patrick Newman, Peter Plavchan, Gregor Srdoc, Chris Stockdale, Anaël Wünsche, Mario Billiani, Martin Davy, Alex Douvas, Keiichi Fukui, Bruno Guillet, Cory Ostrem, Michael Rushton, Angsar Schmidt, Andrea Finardi, Patrice Girard, Tateki Goto, Julien S. de Lambilly, Liouba Leroux, Fabrice Mortecrette, John W. Pickering, Michael Primm, Marc Ribot, Ethan Teng, Aad Verveen, Stefan Will, Mark Ziegler   +83 more
doaj   +1 more source