Theoretical versus Observational Uncertainties: Composition of Giant Exoplanets

@article{Mller2020TheoreticalVO,
  title={Theoretical versus Observational Uncertainties: Composition of Giant Exoplanets},
  author={Simon M{\"u}ller and Maya Ben-Yami and Ravit Helled},
  journal={The Astrophysical Journal},
  year={2020},
  volume={903}
}
In order to characterize giant exoplanets and better understand their origin, knowledge of how the planet’s composition depends on its mass and stellar environment is required. In this work, we simulate the thermal evolution of gaseous planets and explore how various common model assumptions such as different equations of state, opacities, and heavy-element distributions affect the inferred radius and metallicity. We examine how the theoretical uncertainties translate into uncertainties in the… 

Synthetic evolution tracks of giant planets

Giant planet evolution models play a crucial role in interpreting observations and constraining formation pathways. However, the simulations can be slow or prohibitively difficult. To address this

Estimating Physical Properties of Confirmed Exoplanets: I. Calculation of essential planetary properties-Possible M-R cataloging of exoplanets

The discovery of extrasolar planets outside our solar system and around other stars is now well underway. In the presented paper, calculations of some physical properties for confirmed exoplanets

Why do more massive stars host larger planets?

Aims. It has been suggested that planetary radii increase with stellar mass for planet sizes smaller than 6 R⊕ and host masses lower than 1 M⊙. In this study, we explore whether this inferred

Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. II. Discovery of a Failed Hot Jupiter on a 2.7 Yr, Highly Eccentric Orbit

Radial velocity (RV) surveys have discovered giant exoplanets on au-scale orbits with a broad distribution of eccentricities. Those with the most eccentric orbits are valuable laboratories for

How drifting and evaporating pebbles shape giant planets

Upcoming studies of extrasolar gas giants will give precise insights into the composition of planetary atmospheres, with the ultimate goal of linking it to the formation history of the planet. Here,

Ariel planetary interiors White Paper

The recently adopted Ariel ESA mission will measure the atmospheric composition of a large number of exoplanets. This information will then be used to better constrain planetary bulk compositions.

A Transiting Warm Giant Planet around the Young Active Star TOI-201

We present the confirmation of the eccentric warm giant planet TOI-201 b, first identified as a candidate in Transiting Exoplanet Survey Satellite photometry (Sectors 1–8, 10–13, and 27–28) and

References

SHOWING 1-10 OF 61 REFERENCES

Giant Planet Formation Models with a Self-consistent Treatment of the Heavy Elements

We present a new numerical framework to model the formation and evolution of giant planets. The code is based on the further development of the stellar evolution toolkit Modules for Experiments in

Heavy-metal Jupiters by major mergers: metallicity versus mass for giant planets

Some Jupiter-mass exoplanets contain $\sim$$100\, M_\oplus$ of metals, well above the $\sim$$10\, M_\oplus$ typically needed in a solid core to trigger giant planet formation by runaway gas

Forming the cores of giant planets from the radial pebble flux in protoplanetary discs

The formation of planetary cores must proceed rapidly in order for the giant planets to accrete their gaseous envelopes before the dissipation of the protoplanetary gas disc (less than or similar to

GASEOUS MEAN OPACITIES FOR GIANT PLANET AND ULTRACOOL DWARF ATMOSPHERES OVER A RANGE OF METALLICITIES AND TEMPERATURES

We present new calculations of Rosseland and Planck gaseous mean opacities relevant to the atmospheres of giant planets and ultracool dwarfs. Such calculations are used in modeling the atmospheres,

The Origin of the Heavy-element Content Trend in Giant Planets via Core Accretion

We explore the origin of the trend of heavy elements in observed massive exoplanets. Coupling of better measurements of the mass (Mp) and radius of exoplanets with planet structure models enables

THE MASS–METALLICITY RELATION FOR GIANT PLANETS

Exoplanet discoveries of recent years have provided a great deal of new data for studying the bulk compositions of giant planets. Here we identify 47 transiting giant planets (20 M⊕ < M < 20 MJ)

Structure and evolution of super-Earth to super-Jupiter exoplanets - I. Heavy element enrichment in the interior

Aims. We examine the uncertainties in current planetary models and quantify their impact on the planet cooling histories and massradius relationships. Methods. These uncertainties include (i) the

An Equation of State for Low-Mass Stars and Giant Planets

A new quotidian equation of state (QEOS) for hot dense matter

The quotidian equation of state (QEOS) is a general‐purpose equation of state model for use in hydrodynamic simulation of high‐pressure phenomena. Electronic properties are obtained from a modified

A New Equation of State for Dense Hydrogen–Helium Mixtures

We present a new equation of state (EOS) for dense hydrogen/helium mixtures that covers a range of densities from 10−8 to , pressures from 10−9 to 1013 GPa, and temperatures from 102 to 108 K. The
...