Results 71 to 80 of about 5,562 (188)

Super-Earths: A New Class of Planetary Bodies

, 2011
Super-Earths, a class of planetary bodies with masses ranging from a few Earth-masses to slightly smaller than Uranus, have recently found a special place in the exoplanetary science.
Armitage P. J., Christensen U. R., Clubb K., Dobrovolskis A. R., Fogg M. J., Ford E.B., Goldreich P., Haghighipour N., Haghighipour N., Hatzes A.P., Heng K., Michael S., Nader Haghighipour, Safronov V. S., Smoluchowski M. V., Sotin C., Stamenkovic V., Stamenkovic V., Steffen J. H., Swift D. C., Tackley P. J., Weidenschilling S. J.   +21 more
core   +1 more source

Coupled Planetary Interior and Tidal Evolution

The Astrophysical Journal
We present a new planetary structure/thermal evolution model, designed for use in problems that couple orbital dynamics with planetary structure. We first benchmark our structural/thermal evolution calculations against the MESA stellar evolution code ...
Tim Hallatt, Sarah Millholland
doaj   +1 more source

Formation of Super-Earths

, 2018
Super-Earths are the most abundant planets known to date and are characterized by having sizes between that of Earth and Neptune, typical orbital periods of less than 100 days and gaseous envelopes that are often massive enough to significantly ...
Andre Izidoro, Angie Wolfgang, Benjamin J. Fulton, Brad M. S. Hansen, Chris W. Ormel, Chris W. Ormel, D Powell, Daniel C. Fabrycky, Eric D. Lopez, Eric D. Lopez, Eric D. Lopez, France Allard, François Fressin, Gennaro D'Angelo, Geoffrey W. Marcy, H Rein, HE Schlichting, Howard Chen, James E. Owen, Jeffrey Fung, JH Steffen, Katherine M. Deck, L Tu, Leslie A. Rogers, LM Weiss, M. Ikoma, Niraj K. Inamdar, Niraj K. Inamdar, Owen R. Lehmer, Peter Goldreich, R Boekel van, Rebekah I. Dawson, RR Rafikov, S Seager, Sheng Jin, Sivan Ginzburg, Sivan Ginzburg, SN Raymond, Y Wu, Yuval Greenzweig   +39 more
core   +1 more source

Additive Manufacturing Provides Infinite Possibilities for Self‐Sensing Technology

Advanced Science, Volume 11, Issue 28, July 24, 2024.
Proprioception embedded in biological bodies can be migrated to smart devices, depending on the right configuration of materials and structures in the right place. Additive manufacturing technology can meet this very well, which provides unlimited possibilities for the preparation of self‐sensing intelligent devices.
Daobing Chen, Zhiwu Han, Junqiu Zhang, Longjian Xue, Sheng Liu   +4 more
wiley   +1 more source

Obliquity Constraints for the Extremely Eccentric Sub-Saturn Kepler-1656 b

The Astrophysical Journal Letters
The orbits of close-in exoplanets provide clues to their formation and evolutionary history. Many close-in exoplanets likely formed far out in their protoplanetary disks and migrated to their current orbits, perhaps via high-eccentricity migration (HEM),
Ryan A. Rubenzahl, Andrew W. Howard, Samuel Halverson, Cristobal Petrovich, Isabel Angelo, Guđmundur Stefánsson, Fei Dai, Aaron Householder, Benjamin Fulton, Steven R. Gibson, Arpita Roy, Abby P. Shaum, Howard Isaacson, Max Brodheim, William Deich, Grant M. Hill, Bradford Holden, Daniel Huber, Russ R. Laher, Kyle Lanclos, Joel N. Payne, Erik A. Petigura, Christian Schwab, Josh Walawender, Sharon X. Wang, Lauren M. Weiss, Joshua N. Winn, Jason T. Wright   +27 more
doaj   +1 more source

Constraining stellar tidal quality factors from planet‐induced stellar spin‐up

Astronomische Nachrichten, Volume 345, Issue 5, June 2024.
Abstract The dynamical evolution of tight star‐planet systems is influenced by tidal interactions between the star and the planet, as was shown recently. The rate at which spins and orbits in such a system evolve depends on the stellar and planetary tidal dissipation efficiency. Here, we present a method to constrain the modified tidal quality factor Q*
Nikoleta Ilić, Katja Poppenhaeger, Anna Barbara Queiroz, Cristina Chiappini   +3 more
wiley   +1 more source

The Radius Cliff is a Waterfall: Explaining Sub-Neptune Exoplanets with Steam Worlds

The Astrophysical Journal
The demographics of Kepler planets provide a key testbed for models of planet formation and evolution, particularly for explaining the radius valley separating super-Earths and sub-Neptunes.
Aritra Chakrabarty, Gijs D. Mulders, Artyom Aguichine, Natalie Batalha   +3 more
doaj   +1 more source

Binarity of Transit Host Stars - Implications on Planetary Parameters

, 2009
Straight-forward derivation of planetary parameters can only be achieved in transiting planetary systems. However, planetary attributes such as radius and mass strongly depend on stellar host parameters.
Bakos, Brandner, Butler, C. Bergfors, Charbonneau, Chauvin, Desidera, Eggenberger, F. Hormuth, Fischer, Hansen, Holman, Hormuth, Kraus, Law, M. Janson, Mandushev, Mayor, Mugrauer, Mugrauer, Mugrauer, O'Donovan, Oke, Pickles, Pollacco, Raghavan, S. Daemgen, S. Hippler, Seager, Skrutskie, Smith, Sozzetti, Street, T. Henning, Torres, W. Brandner, Yi, Zacharias   +37 more
core   +2 more sources

Die Suche nach kalten, fremden Welten

Physik in unserer Zeit, Volume 55, Issue 3, Page 140-147, May 2024.
Die meisten der heute bekannten extrasolaren Planeten umkreisen ihren Mutterstern auf engen Umlaufbahnen in weniger als 100 Tagen. Gesteinsplaneten mit größeren Bahnradien sind von herausragender Bedeutung für Theorien der Planetenentstehung. Die Mikrogravitationslinsenmethode bietet eine hervorragende Möglichkeit, solche Planeten zu finden – und das ...
Markus Hundertmark, Yiannis Tsapras
wiley   +1 more source

Insight into the Formation of β Pic b through the Composition of Its Parent Protoplanetary Disk as Revealed by the β Pic Moving Group Member HD 181327

The Astronomical Journal
It has been suggested that β Pic b has a supersolar metallicity and subsolar C/O ratio. Assuming solar carbon and oxygen abundances for the star β Pic and therefore the planet’s parent protoplanetary disk, β Pic b’s C/O ratio suggests that it formed via ...
Henrique Reggiani, Jhon Yana Galarza, Kevin C. Schlaufman, David K. Sing, Brian F. Healy, Andrew McWilliam, Joshua D. Lothringer, Laurent Pueyo   +7 more
doaj   +1 more source