Results 61 to 70 of about 174 (88)

Searching for GEMS: TOI-7149 b, an Inflated Giant Planet Causing a 12% Transit of a Fully Convective M-dwarf

open access: yesThe Astronomical Journal
We describe the discovery and characterization of TOI-7149 b, a 0.705 ± 0.075 M _J , 1.18 ± 0.045 R _J gas giant on a ∼2.65 days period orbit transiting an M4V star with a mass of 0.344 ± 0.030 M _⊙ and an effective temperature of 3363 ± 59 K. The planet
Shubham Kanodia   +23 more
doaj   +1 more source

Transiting Jupiters around M Dwarfs Have Similar Masses to FGK Warm Jupiters

open access: yesThe Astrophysical Journal
This paper presents a comparative analysis of the bulk properties (mass and radius) of transiting giant planets (≳8 R _⊕ ) orbiting FGKM stars. Our findings suggest that the average mass of M-dwarf Jupiters is lower than that of their solar-type ...
Shubham Kanodia
doaj   +1 more source

Formation of Giant Planets by Gas Disk Gravitational Instability on Wide Orbits around Protostars with Varied Masses. II. Quadrupled Spatial Resolution and Beta Cooling

open access: yesThe Astrophysical Journal
Exoplanet demographics are sufficiently advanced to provide important constraints on theories of planet formation. While core and pebble accretion are preferred for rocky and icy planets, there appears to be a need for gas disk gravitational instability (
Alan P. Boss
doaj   +1 more source

A Possible Mechanism to Explain the Prograde Equatorial Jet of a Jupiter-like Gaseous Giant

open access: yesThe Astrophysical Journal Letters
Gaseous giants are characterized by their deep atmospheres, which lack clear boundaries with their interiors; therefore, their internal states could directly influence atmospheric dynamics. So far, most modeling studies have considered deep convection as
Yuchen Lian, Pengshuo Duan, Dali Kong
doaj   +1 more source

Evolution of Semiconvective Staircases in Rotating Flows: Consequences for Fuzzy Cores in Giant Planets

open access: yesThe Astrophysical Journal Letters
Recent observational constraints on the internal structure of Jupiter and Saturn suggest that these planets have “fuzzy” cores, i.e., gradients of the concentration of heavy elements that might span a large fraction of the planet’s radius.
J. R. Fuentes   +3 more
doaj   +1 more source

HD 715 b, a Warm Jupiter Orbiting a Massive Subgiant Discovered from a Single TESS Transit

open access: yesThe Astronomical Journal
Transiting warm Jupiters orbiting bright stars are scarcely known, but a substantial number of these planets have been uncovered by the TESS mission. In this work, we report the discovery and confirmation of a transiting warm Jupiter orbiting the bright (
Alexander Venner   +25 more
doaj   +1 more source

Discovery of a Jupiter Analog Misaligned to the Inner Planetary System in HD 73344

open access: yesThe Astronomical Journal
We present the discovery of a Jupiter-like planet, HD 73344 d ( ${m}_{d}=2.5{5}_{-0.46}^{+0.56}\,{M}_{J}$ , ${a}_{d}=6.7{0}_{-0.26}^{+0.25}$ au, ${e}_{d}=0.1{8}_{-0.12}^{+0.14}$ ) based on 27 yr radial velocity (RV) observations from ELODIE, Lick ...
Jingwen Zhang   +8 more
doaj   +1 more source

The Roman Microlensing Survey: Confirmation or Refutation of Gas Giant Exoplanet Formation Theories

open access: yesThe Astrophysical Journal
Exoplanet research has moved from the discovery of new classes of planets toward creating a census of exoplanet population demographics across the spectrum of exoplanet and host star masses.
Alan P. Boss
doaj   +1 more source

Analytical Model for the Evolution of Giant Extrasolar Planets

Planetary and Space Science, 2014
I P Williams
exaly  

Theory of Giant Planets

Annual Review of Astronomy and Astrophysics, 2002
Adam Burrows   +2 more
exaly  

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