Results 131 to 140 of about 2,894 (208)

A survey of eight hot Jupiters in secondary eclipse using WIRCam at CFHT. [PDF]

Mon Not R Astron Soc, 2018
Martioli E, Colón KD, Angerhausen D, Stassun KG, Rodriguez JE, Zhou G, Gaudi BS, Pepper J, Beatty TG, Tata R, James DJ, Eastman JD, Wilson PA, Bayliss D, Stevens DJ.   +14 more
europepmc   +1 more source

The Aligned Orbit of a Hot Jupiter around the M Dwarf TOI-4201

The Astrophysical Journal Letters
Measuring the obliquities of stars hosting giant planets may shed light on the dynamical history of planetary systems. Significant efforts have been made to measure the obliquities of FGK stars with hot Jupiters, mainly based on observations of the ...
Tianjun Gan, Sharon X. Wang, Fei Dai, Joshua N. Winn, Shude Mao, Siyi Xu, Enric Pallé, Jacob L. Bean, Madison Brady, Nina Brown, Cicero Lu, Rafael Luque, Teo Mocnik, Andreas Seifahrt, Guđmundur K. Stefánsson   +14 more
doaj   +1 more source

The influence of galactic cosmic rays on ion-neutral hydrocarbon chemistry in the upper atmospheres of free-floating exoplanets

, 2014
The authors highlight financial support of the European Community under the FP7 by an ERC starting grant.Cosmic rays may be linked to the formation of volatiles necessary for prebiotic chemistry.
P. B. Rimmer, C. Bilger, Rimmer, P.B., Helling, C., Bilger, C., Ch. Helling   +5 more
core   +1 more source

Orbital Decay Candidates Reconsidered: WASP-4 b Is Not Decaying and Kepler-1658 b Is Not a Planet

The Planetary Science Journal
The fate of hot Jupiters is thought to be engulfment by their host stars, the outcome of tidal orbital decay. Transit timing has revealed a few systems with apparently shrinking orbital periods, but such signals can be mimicked by light travel-time ...
Joshua N. Winn, Guđmundur Stefánsson
doaj   +1 more source

A broadband thermal emission spectrum of the ultra-hot Jupiter WASP-18b. [PDF]

Nature, 2023
Coulombe LP, Benneke B, Challener R, Piette AAA, Wiser LS, Mansfield M, MacDonald RJ, Beltz H, Feinstein AD, Radica M, Savel AB, Dos Santos LA, Bean JL, Parmentier V, Wong I, Rauscher E, Komacek TD, Kempton EM, Tan X, Hammond M, Lewis NT, Line MR, Lee EKH, Shivkumar H, Crossfield IJM, Nixon MC, Rackham BV, Wakeford HR, Welbanks L, Zhang X, Batalha NM, Berta-Thompson ZK, Changeat Q, Désert JM, Espinoza N, Goyal JM, Harrington J, Knutson HA, Kreidberg L, López-Morales M, Shporer A, Sing DK, Stevenson KB, Aggarwal K, Ahrer EM, Alam MK, Bell TJ, Blecic J, Caceres C, Carter AL, Casewell SL, Crouzet N, Cubillos PE, Decin L, Fortney JJ, Gibson NP, Heng K, Henning T, Iro N, Kendrew S, Lagage PO, Leconte J, Lendl M, Lothringer JD, Mancini L, Mikal-Evans T, Molaverdikhani K, Nikolov NK, Ohno K, Palle E, Piaulet C, Redfield S, Roy PA, Tsai SM, Venot O, Wheatley PJ.   +75 more
europepmc   +1 more source

Exploring Warm Jupiter Migration Pathways with Eccentricities. I. Catalog of Uniform Keplerian Fits to Radial Velocities of 200 Warm Jupiters

The Astrophysical Journal Supplement Series
Giant planets are expected to predominantly form beyond the water-ice line and occasionally undergo inward migration. Unlike hot Jupiters, which can result from high-eccentricity tidal migration, warm Jupiters between 0.1 and 1 au (≈10–365 days) are in ...
Marvin Morgan, Brendan P. Bowler, Quang H. Tran, Robert A. Wittenmyer, Duncan J. Wright, George Zhou, Tyler R. Fairnington   +6 more
doaj   +1 more source

Secular chaos and its application to Mercury, hot Jupiters, and the organization of planetary systems. [PDF]

Proc Natl Acad Sci U S A, 2014
Lithwick Y, Wu Y.
europepmc   +1 more source

A Massive Hot-Jupiter Companion that Disfavors Giant Planet Formation beyond the Water-ice Line

The Astrophysical Journal Letters
We report evidence for a brown dwarf companion with mass $3{4}_{-11}^{+30}\,{M}_{{\rm{J}}}$ in the KELT-20 system, in which an ultrahot Jupiter transits an A2-type star.
Eritas Yang, Tiger Lu, Daniel A. Yahalomi, Joshua N. Winn   +3 more
doaj   +1 more source

Planetary population synthesis and the emergence of four classes of planetary system architectures. [PDF]

Eur Phys J Plus, 2023
Emsenhuber A, Mordasini C, Burn R.
europepmc   +1 more source

From Misaligned Sub-Saturns to Aligned Brown Dwarfs: The Highest Mp/M* Systems Exhibit Low Obliquities, Even around Hot Stars

The Astrophysical Journal Letters
We present a pattern emerging from stellar obliquity measurements in single-star systems: planets with high planet-to-star mass ratios ( M _P / M _* ≥ 2 × 10 ^−3 )—such as super-Jupiters, brown dwarf companions, and M dwarfs hosting Jupiter-like planets ...
Jace Rusznak, Xian-Yu Wang, Malena Rice, Songhu Wang   +3 more
doaj   +1 more source