Results 151 to 160 of about 4,598,556 (263)

Where Are the Water Worlds? Identifying Exo-water-worlds Using Models of Planet Formation and Atmospheric Evolution

The Astrophysical Journal
Planet formation models suggest that the small exoplanets that migrate from beyond the snowline of the protoplanetary disk likely contain water-ice-rich cores (∼50% by mass), also known as water worlds.
Aritra Chakrabarty, Gijs D. Mulders
doaj   +1 more source

The sub-Jupiter/Neptune desert of exoplanets: parameter dependent boundaries and implications on planet formation [PDF]

, 2019
Gy. M. Szabó, Szilárd Kálmán
openalex   +1 more source

Boundary Layers of Circumplanetary Disks around Spinning Planets. II. Global Modes with Azimuthal Magnetic Fields

The Astrophysical Journal
The accretion of material from disks onto weakly magnetized objects invariably involves its traversal through a material surface, known as the boundary layer (BL).
Zhihao Fu, Shunquan Huang, Cong Yu
doaj   +1 more source

Can Isotopologues Be Used as Biosignature Gases in Exoplanet Atmospheres? [PDF]

Life (Basel), 2023
Glidden A, Seager S, Petkowski JJ, Ono S.   +3 more
europepmc   +1 more source

Science with an ngVLA: Observing the Effects of Chemistry on Exoplanets and Planet Formation

, 2018
One of the primary mechanisms for inferring the dynamical history of planets in our Solar System and in exoplanetary systems is through observation of elemental ratios (i.e. C/O). The ability to effectively use these observations relies critically on a robust understanding of the chemistry and evolutionary history of the observed abundances ...
McGuire, Brett A., Bergin, Edwin, Blake, Geoffrey A., Burkhardt, Andrew M., Cleeves, L. Ilsedore, Loomis, Ryan A., Remijan, Anthony J., Shingledecker, Christopher N., Willis, Eric R.   +8 more
openaire   +2 more sources

The Impact-driven Atmospheric Loss of Super-Earths around Different Spectral Types of Host Stars

The Astrophysical Journal
A planet’s mass loss is important for the its formation and evolution. The radius valley (RV) is believed to be triggered by evaporation-induced mass loss.
Wei Zhong, Cong Yu, Shi Jia, Shang-Fei Liu   +3 more
doaj   +1 more source

A Revisit of the Mass–Metallicity Trends in Transiting Exoplanets

The Astronomical Journal
The two prevailing planet formation scenarios, core accretion and disk instability, predict distinct planetary mass–metallicity relations. Yet, the detection of this trend remains challenging due to inadequate data on planet atmosphere abundance and ...
Qinghui Sun, Sharon Xuesong Wang, Luis Welbanks, Johanna Teske, Johannes Buchner   +4 more
doaj   +1 more source

Observational Signatures of a Previous Dynamical Instability in Multi-planet M-dwarf Systems

The Astrophysical Journal
We identify observational signatures suggesting a history of dynamical instability in 26 out of 34 M-dwarf multi-planet systems containing no large planets.
Anna C. Childs, Alexa P. S. Hua, Rebecca G. Martin, Chao-Chin Yang, Aaron M. Geller   +4 more
doaj   +1 more source

The evolution of hot Jupiters revealed by the age distribution of their host stars. [PDF]

Proc Natl Acad Sci U S A, 2023
Chen DC, Xie JW, Zhou JL, Dong S, Yang JY, Zhu W, Liu C, Huang Y, Xiang MS, Wang HF, Zheng Z, Luo AL, Zhang JH, Zhu Z.   +13 more
europepmc   +1 more source

Separating Super-puffs versus Hot Jupiters among Young Puffy Planets

The Astrophysical Journal
Discoveries of close-in young puffy ( R _p ≳ 6 R _⊕ ) planets raise the question of whether they are bona fide hot Jupiters or puffed-up Neptunes, potentially placing constraints on the formation location and timescale of hot Jupiters.
Amalia Karalis, Eve J. Lee, Daniel P. Thorngren   +2 more
doaj   +1 more source