Results 91 to 100 of about 1,040 (180)

Interior and Climate Modeling of the Venus Zone Planet TOI-2285 b

The Astronomical Journal
As the discovery of exoplanets progresses at a rapid pace, the large number of known planets provides a pathway to assess the stellar and planetary properties that govern the climate evolution of terrestrial planets.
Emma L. Miles, Colby Ostberg, Stephen R. Kane, Ondrea Clarkson, Cayman T. Unterborn, Tara Fetherolf, Michael J. Way, Sadie G. Welter   +7 more
doaj   +1 more source

TESS Giants Transiting Giants. VI. Newly Discovered Hot Jupiters Provide Evidence for Efficient Obliquity Damping after the Main Sequence

The Astronomical Journal
The degree of alignment between a star’s spin axis and the orbital plane of its planets (the stellar obliquity) is related to interesting and poorly understood processes that occur during planet formation and evolution.
Nicholas Saunders, Samuel K. Grunblatt, Ashley Chontos, Fei Dai, Daniel Huber, Jingwen Zhang, Guđmundur Stefánsson, Jennifer L. van Saders, Joshua N. Winn, Daniel Hey, Andrew W. Howard, Benjamin Fulton, Howard Isaacson, Corey Beard, Steven Giacalone, Judah Van Zandt, Joseph M. Akana Murphey, Malena Rice, Sarah Blunt, Emma Turtelboom, Paul A. Dalba, Jack Lubin, Casey Brinkman, Emma M. Louden, Emma Page, Cristilyn N. Watkins, Karen A. Collins, Chris Stockdale, Thiam-Guan Tan, Richard P. Schwarz, Bob Massey, Steve B. Howell, Andrew Vanderburg, George R. Ricker, Jon M. Jenkins, Sara Seager, Jessie L. Christiansen, Tansu Daylan, Ben Falk, Max Brodheim, Steven R. Gibson, Grant M. Hill, Bradford Holden, Aaron Householder, Stephen Kaye, Russ R. Laher, Kyle Lanclos, Erik A. Petigura, Arpita Roy, Ryan A. Rubenzahl, Christian Schwab, Abby P. Shaum, Martin M. Sirk, Christopher L. Smith, Josh Walawender, Sherry Yeh   +55 more
doaj   +1 more source

Dynamics of Two Planets near a 2:1 Resonance: Case Studies of Known and Synthetic Exosystems on a Grid of Initial Configurations

Universe
The distribution of period ratios for 580 known two-planet systems is apparently nonuniform, with several sharp peaks and troughs. In particular, the vicinity of the 2:1 commensurability seems to have a deficit of systems.
Valeri Makarov, Alexey Goldin, Dimitri Veras   +2 more
doaj   +1 more source

WASP-69b’s Escaping Envelope Is Confined to a Tail Extending at Least 7 Rp

The Astrophysical Journal
Studying the escaping atmospheres of highly irradiated exoplanets is critical for understanding the physical mechanisms that shape the demographics of close-in planets.
Dakotah Tyler, Erik A. Petigura, Antonija Oklopčić, Trevor J. David   +3 more
doaj   +1 more source

The Epoch of Giant Planet Migration Planet Search Program. II. A Young Hot Jupiter Candidate around the AB Dor Member HS Psc

The Astronomical Journal
We report the discovery of a hot Jupiter candidate orbiting HS Psc, a K7 (≈0.7 M _⊙ ) member of the ≈130 Myr AB Doradus moving group. Using radial velocities over 4 yr from the Habitable-zone Planet Finder spectrograph at the Hobby–Eberly Telescope, we ...
Quang H. Tran, Brendan P. Bowler, William D. Cochran, Samuel Halverson, Suvrath Mahadevan, Joe P. Ninan, Paul Robertson, Guđmundur Stefánsson, Ryan C. Terrien   +8 more
doaj   +1 more source

Inversion of Hydrogen-rich Atmosphere and Water Content for GJ 486b

The Astrophysical Journal
GJ 486b is a close-in planet orbiting an M dwarf and is therefore expected to have undergone strong atmospheric escape. Motivated by theoretical and observational studies on the constraints of its water and atmosphere, we investigate which combinations ...
Junda Zhou, Zhenyang Huang, Di-Chang Chen, Jianheng Guo   +3 more
doaj   +1 more source

Water Evolution and Inventories of Super-Earths Orbiting Late M Dwarfs

The Astrophysical Journal
Super-Earths orbiting M dwarf stars may be the most common habitable planets in the Universe. However, their habitability is threatened by intense irradiation from their host stars, which drives the escape of water to space and can lead to surface ...
Keavin Moore, Benjamin David, Albert Yian Zhang, Nicolas B. Cowan   +3 more
doaj   +1 more source

Exo-Geoscience Perspectives Beyond Habitability. [PDF]

Space Sci Rev
Spohn T, Roberge A, Way MJ, Duarte JC, Miozzi F, Baumeister P, Byrne P, Lineweaver CH.   +7 more
europepmc   +1 more source

A young progenitor for the most common planetary systems in the Galaxy. [PDF]

Nature
Livingston JH, Petigura EA, David TJ, Masuda K, Owen J, Nesvorný D, Batygin K, de Leon J, Mori M, Ikuta K, Fukui A, Watanabe N, Orell Miquel J, Murgas F, Parviainen H, Korth J, Libotte F, Abreu García N, Gallardo PPM, Narita N, Pallé E, Tamura M, Yonehara A, Ridden-Harper A, Bieryla A, Trani AA, Mamajek EE, Ciardi DR, Gorjian V, Hillenbrand LA, Rebull LM, Newton ER, Mann AW, Vanderburg A, Stefánsson G, Mahadevan S, Cañas C, Ninan J, Higuera J, Todorov K, Désert JM, Pino L.   +41 more
europepmc   +1 more source

Main-sequence exoplanet systems: tidal evolution

The easiest exoplanets to detect are those that orbit very close to their hoststars. As a result, even though these planets are quite rare, they represent amajor fraction of the current exoplanet population. A side-effect of theproximity between the planet and the star is that the two have strong mutualinteractions through a number of physical ...
openaire   +2 more sources