Results 211 to 220 of about 1,052,175 (256)

Exploring Exoplanets' Spectroscopic Secrets: Clues on the Migration and Formation of Hot Jupiters

, 2018
Before the mid-90's, scientists' theories for planet formation were finely-tuned to explain the existence of our own Solar System. These theories were thrown into disarray when astronomers began to discover exoplanets, or planets in other solar systems.
Danielle Piskorz
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Formation and Migration Histories of Giant Exoplanets in Multi-stellar Systems

, 2017
The first planets discovered outside of our solar system were very different from the solar system planets. These discoveries raised new challenges to planet formation models, which were designed to explain the origin of the solar system planets. One particularly intriguing population, the "hot Jupiters" were some of the first planets discovered. These
Henry Ngo
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Exoplanets in Open Clusters and Binaries: New Constraints on Planetary Migration

, 2016
In this dissertation, we present three complementary studies of the processes that drive planetary migration. The first is a radial-velocity survey in search of giant planets in adolescent (Gyr) open clusters. While several different mechanisms may act to drive giant planets inward, only some mechanisms will excite high eccentricities while doing so ...
Samuel N. Quinn
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Long-term evolution of exoplanet systems

Proceedings of the International Astronomical Union, 2022
In this Review, I discuss recent developments on the long-term dynamical evolution of exoplanet systems, focusing on how distinctive dynamical processes may have shaped the orbital architectures of observed populations.
C. Petrovich
semanticscholar   +1 more source

Migration of giants

Nature, 2016
The origin of hot Jupiters, large gaseous planets in close orbits around stars, is unknown. Observations suggest that such planets are abundant in stellar clusters, and can result from encounters with other celestial bodies.
openaire   +3 more sources

Toward Exoplanet Transit Spectroscopy Using JWST/MIRI’s Medium Resolution Spectrometer

Publications of the Astronomical Society of the Pacific
The Mid-Infrared Instrument Medium Resolution Spectrometer (the MRS) on JWST has potentially important advantages for transit and eclipse spectroscopy of exoplanets, including lack of saturation for bright host stars, wavelength span to longward of 20 ...
D. Deming, Guangwei Fu, J. Bouwman, Daniel Dicken, Néstor Espinoza, A. Glasse, Thomas P. Greene, S. Kendrew, David R. Law, Jacob Lustig-Yaeger, Macarena García Marín, E. Schlawin   +11 more
semanticscholar   +1 more source

Impacting Atmospheres: How Late-stage Pollution Alters Exoplanet Composition

Astrophysical Journal
The atmospheric composition of exoplanets is often considered as a probe of the planet’s formation conditions. How exactly the initial chemical memory may be altered from the birth to the final state of the planet, however, remains unknown.
Emilia Vlahos, Yayaati Chachan, Vincent Savignac, Eve J. Lee   +3 more
semanticscholar   +1 more source

BOWIE-ALIGN: A JWST comparative survey of aligned vs misaligned hot Jupiters to test the dependence of atmospheric composition on migration history

RAS Techniques and Instruments
A primary objective of exoplanet atmosphere characterisation is to learn about planet formation and evolution, however, this is challenged by degeneracies.
James Kirk, E. Ahrer, A. Penzlin, J. E. Owen, Richard A. Booth, L. Alderson, D. Christie, A. B. Claringbold, E. Esparza-Borges, Chloe Fisher, M. L'opez-Morales, N. Mayne, Mason McCormack, A. Meech, Vatsal Panwar, D. Powell, D. Sergeev, Jake Taylor, Shang-Min Tsai, Daniel Valentine, H. Wakeford, P. Wheatley, M. Zamyatina   +22 more
semanticscholar   +1 more source

Inward migration of the TRAPPIST-1 planets as inferred from their water-rich compositions

, 2017
Multiple planet systems provide an ideal laboratory for probing exoplanet composition, formation history and potential habitability. For the TRAPPIST-1 planets, the planetary radii are well established from transits1,2, with reasonable mass estimates ...
C. Unterborn, S. Desch, N. Hinkel, A. Lorenzo   +3 more
semanticscholar   +1 more source

Planetary Migration in Protoplanetary Disks.

, 2018
The known exoplanet population displays a great diversity of orbital architectures, and explaining the origin of this is a major challenge for planet formation theories.
R. Nelson
semanticscholar   +1 more source