Results 121 to 130 of about 2,913 (208)

Shedding Light on Desert Dwellers

The Astrophysical Journal
The “sub-Jovian desert” (2 ≲  R _p  ≲ 10 R _⊕ , periods ≲3 days) is sparsely populated but no longer empty. Recent surveys have revealed that planets residing in the desert are dense ( ρ  ≳ 1 g cm ^−3 ), massive (∼10−50 M _⊕ ), and orbit metal-rich stars
Tim Hallatt, Sarah Millholland
doaj   +1 more source

Global flow regimes of hot Jupiters [PDF]

Context: the atmospheric dynamics of hot and ultrahot Jupiters are influenced by the stellar irradiation they receive, which shapes their atmospheric circulation and the underlying wave structures.
Heng, K., Mendonça, J. M., Deitrick, R., Akın, C., Gkouvelis, L.   +4 more
core   +1 more source

A Larger Sample Confirms Small Planets around Hot Stars Are Misaligned

The Astrophysical Journal Letters
The distribution of stellar obliquities provides critical insight into the formation and evolution pathways of exoplanets. In the past decade, it was found that hot stars hosting hot Jupiters are more likely to have high obliquities than cool stars, but ...
Emma M. Louden, Songhu Wang, Joshua N. Winn, Erik A. Petigura, Howard Isaacson, Luke Handley, Samuel W. Yee, Corey Beard, Joseph M. Akana Murphy, Gregory Laughlin   +9 more
doaj   +1 more source

Investigating the Origins of Hot Neptunes from Radial Velocity Data

The Astronomical Journal
Hot Neptunes are extrasolar planets that are similar in size to Neptune in our solar system but are much closer to their host stars, completing an orbit in 10 days or less. The origin of hot Neptunes is not fully understood.
Sophie Y. Zheng
doaj   +1 more source

Two-dimensional Models of Microphysical Clouds on Hot Jupiters. I. Cloud Properties

The Astrophysical Journal
We present a new two-dimensional, bin-scheme microphysical model of cloud formation in the atmospheres of hot Jupiters that includes the effects of longitudinal gas and cloud transport.
Diana Powell, Xi Zhang
doaj   +1 more source

Towards Doppler eclipse mapping of hot Jupiters

Astronomy & Astrophysics
Context. In the last decade, ground-based high-resolution spectroscopy (HRS) has emerged as a powerful method to probe exoplanet atmospheres both in transit and thermal emission.
Yariv V., Bonfils X., Cowan N., Forveille T., Debras F., Carmona A., Delfosse X., Masson A., Parmentier V., Allart R.   +9 more
doaj   +1 more source

Planet population synthesis: the role of stellar encounters. [PDF]

Mon Not R Astron Soc, 2022
Ndugu N, Abedigamba OP, Andama G.
europepmc   +1 more source

Exploring Warm Jupiter Migration Pathways with Eccentricities. II. Correlations with Host Star Properties and Orbital Separation

The Astronomical Journal
Warm Jupiters with orbital periods of ≈10–365 days represent a population of giant planets located well within the water ice line but beyond the region of tidal influence of their host star relevant for high-eccentricity tidal migration.
Marvin Morgan, Brendan P. Bowler, Quang H. Tran   +2 more
doaj   +1 more source

Exterior Companions to Hot Jupiters Orbiting Cool Stars Are Coplanar [PDF]

, 2017
The existence of hot Jupiters has challenged theories of planetary formation since the first extrasolar planets were detected. Giant planets are generally believed to form far from their host stars, where volatile materials like water exist in their ...
Bryan, Marta, Vanderburg, Andrew, Becker, Juliette C., Adams, Fred C., Khain, Tali   +4 more
core  

Exoplanet Ephemerides Change Observations (ExoEcho). I. Transit Timing Analysis of 37 Exoplanets Using HST/WFC3 Data

The Astronomical Journal
The ExoEcho project is designed to study the photodynamics of exoplanets by leveraging high-precision transit timing data from ground- and space-based telescopes.
Xinyue Ma, Wenqin Wang, Zixin Zhang, Cong Yu, Dichang Chen, Jiwei Xie, Shangfei Liu, Li Zhou, Bo Ma   +8 more
doaj   +1 more source