Results 51 to 60 of about 174 (88)

Searching for GEMS: TOI-5916 b & TOI-6158 b are Two Saturn-density Planets Orbiting M2 Dwarfs

The Astronomical Journal
We confirm the planetary nature of (1) TOI-5916 b and (2) TOI-6158 b, two giant exoplanets around M-dwarf stars (GEMS), both discovered by the Transiting Exoplanet Survey Satellite.
Shane O’Brien, Amber Wong, Te Han, Paul Robertson, Shubham Kanodia, Caleb I. Cañas, Arvind F. Gupta, Tera Swaby, Henry A. Kobulnicky, Nidia Morrell, Michael Rodruck, Andrea S. J. Lin, Andrew Monson, William D. Cochran, Chad F. Bender, Scott A. Diddams, Samuel Halverson, Daniel M. Krolikowski, Jessica E. Libby-Roberts, Joe P. Ninan, Arpita Roy, Christian Schwab, Gudmundur Stefansson   +22 more
doaj   +1 more source

Revising the Giant Planet Mass–Metallicity Relation: Deciphering the Formation Sequence of Giant Planets

The Astrophysical Journal
The rate at which giant planets accumulate solids and gas is a critical component of planet formation models, yet it is extremely challenging to predict from first principles.
Yayaati Chachan, Jonathan J. Fortney, Kazumasa Ohno, Daniel Thorngren, Ruth Murray-Clay   +4 more
doaj   +1 more source

86th Annual Meeting of the Meteoritical Society (2024)

Meteoritics &Planetary Science, Volume 59, Issue S1, Page A1-A468, August 2024.
wiley   +1 more source

The Evolution of Jupiter and Saturn as a Function of the Rρ Parameter

The Astrophysical Journal
Computed using the APPLE planetary evolution code, we present updated evolutionary models for Jupiter and Saturn that incorporate helium rain, nonadiabatic thermal structures, and “fuzzy” extended heavy-element cores.
Ankan Sur, Adam Burrows, Roberto Tejada Arevalo, Yubo Su   +3 more
doaj   +1 more source

Searching for GEMS: TOI-5688 A b, a Low-density Giant Orbiting a High-metallicity Early M-dwarf

The Astronomical Journal
We present the discovery of a low-density planet orbiting the high-metallicity early M-dwarf TOI-5688 A b. This planet was characterized as part of the search for transiting giant planets ( R  ≳ 8 R _⊕ ) through the Searching for Giant Exoplanets around ...
Varghese Reji, Shubham Kanodia, Joe P. Ninan, Caleb I. Cañas, Jessica Libby-Roberts, Andrea S. J. Lin, Arvind F. Gupta, Tera N. Swaby, Alexander Larsen, Henry A. Kobulnicky, Philip I. Choi, Nez Evans, Sage Santomenna, Isabelle Winnick, Larry Yu, Jaime A. Alvarado-Montes, Chad F. Bender, Lia Marta Bernabó, Cullen H. Blake, William D. Cochran, Scott A. Diddams, Samuel Halverson, Te Han, Fred Hearty, Sarah E. Logsdon, Suvrath Mahadevan, Michael W. McElwain, Andrew Monson, Paul Robertson, Devendra K. Ojha, Arpita Roy, Christian Schwab, Gudmundur Stefansson, Jason Wright   +33 more
doaj   +1 more source

Searching for GEMS: Characterizing Six Giant Planets Around Cool Dwarfs

The Astronomical Journal
Transiting giant exoplanets around M-dwarf stars (GEMS) are rare, owing to the low-mass host stars. However, the all-sky coverage of TESS has enabled the detection of an increasingly large number of them to enable statistical surveys like the Searching ...
Shubham Kanodia, Arvind F. Gupta, Caleb I. Cañas, Lia Marta Bernabò, Varghese Reji, Te Han, Madison Brady, Andreas Seifahrt, William D. Cochran, Nidia Morrell, Ritvik Basant, Jacob Bean, Chad F. Bender, Zoë L. de Beurs, Allyson Bieryla, Alexina Birkholz, Nina Brown, Franklin Chapman, David R. Ciardi, Catherine A. Clark, Ethan G. Cotter, Scott A. Diddams, Samuel Halverson, Suzanne Hawley, Leslie Hebb, Rae Holcomb, Steve B. Howell, Henry A. Kobulnicky, Adam F. Kowalski, Alexander Larsen, Jessica Libby-Roberts, Andrea S. J. Lin, Michael B. Lund, Rafael Luque, Andrew Monson, Joe P. Ninan, Brock A. Parker, Nishka Patel, Michael Rodruck, Gabrielle Ross, Arpita Roy, Christian Schwab, Guđmundur Stefánsson, Aubrie Thoms, Andrew Vanderburg   +44 more
doaj   +1 more source

Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. V. Two Giant Planets in Kepler-511 but Only One Ran Away

The Astronomical Journal
Systems hosting multiple giant planets are important laboratories for understanding planetary formation and migration processes. We present a nearly decade-long Doppler spectroscopy campaign from the HIRES instrument on the Keck-I telescope to ...
Yayaati Chachan, Paul A. Dalba, Daniel P. Thorngren, Stephen R. Kane, Howard Isaacson, Eve J. Lee, Edward W. Schwieterman, Andrew W. Howard, Matthew J. Payne   +8 more
doaj   +1 more source

Planet Migration in Protoplanetary Disks with Rims

The Astrophysical Journal
Complex structures, including sharp edges, rings, and gaps, have been commonly observed in protoplanetary disks with or without planetary candidates. Here we consider the possibility that they are the intrinsic consequences of angular momentum transfer ...
Zhuoya Cao, Ya-Ping Li, Douglas N.C. Lin, Shude Mao   +3 more
doaj   +1 more source

Gas Giants Formed by Gravitational Instability May Accrete Atmospheres with Superstellar Carbon-to-oxygen Ratios

The Astrophysical Journal
Characterizing the atmospheric compositions of exoplanets, along with determining properties such as their mass, mean density, and orbital configuration, are thought to be an effective means for differentiating between various formation and evolution ...
Alan P. Boss
doaj   +1 more source

Confirmation of the Low-eccentricity Warm Jupiter HD 278555 b with NEID

The Astronomical Journal
The study of warm Jupiters is crucial to understanding the processes that govern giant-planet formation and migration. These planets sit at the boundary between cold giant planets and hot Jupiters, and studying their orbital properties, including period,
James Ball, Arvind F. Gupta, Diana Dragomir, Mark R. Giovinazzi, Keivan G. Stassun, Daniel J. Stevens, Paul A. Dalba, Jiayin Dong, Nolan Grieves, Samuel Halverson, Daniel M. Krolikowski, Sarah E. Logsdon, Suvrath Mahadevan, Joe P. Ninan, Leonardo A. Paredes, Paul Robertson, Arpita Roy, Christian Schwab, Gudmundur Stefansson, Steven Villanueva Jr., Jason T. Wright   +20 more
doaj   +1 more source