Deuterium burning in objects forming via the core accretion scenario - Brown dwarfs or planets?

Abstract

Aims. Our aim is to study deuterium burning in objects forming according to the core accretion scenario in the hot and cold start assumption and what minimum deuterium burning mass limit is found for these objects. We also study how the burning process influences the structure and luminosity of the objects. Furthermore we want to test and verify our results by comparing them to already existing hot start simulations which did not consider, however, the formation process. Methods. We present a new method to calculate deuterium burning of objects in a self-consistently coupled model of planet formation and evolution. We discuss which theory is used to describe the process of deuterium burning and how it was implemented. Results. We find that the objects forming according to a hot start scenario behave approximately in the same way as found in previous works of evolutionary calculations, which did not consider the formation. However, for cold start objects one finds that the objects expand during deuterium burning instead of being partially stabilized against contraction. In both cases, hot and cold start, the mass of the solid core has an influence on the minimum mass limit of deuterium burning. The general position of the mass limit, 13 MJ, stays however approximately the same. None of the investigated parameters was able to change this mass limit by more than 0.8 MJ. Due to deuterium burning, the luminosity of hot and cold start objects becomes comparable after ~ 200 Myrs.

Accepted to A&A. Identical as v1 except for corrected typos. 22 pages, 15 figures

References in corpus (20)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• A Non-Gray Theory of Extrasolar Giant Planets and Brown Dwarfs
• The Theory of Brown Dwarfs and Extrasolar Giant Planets
• Theory of Low-Mass Stars and Substellar Objects
• On the Luminosity of Young Jupiters
• Line and Mean Opacities for Ultracool Dwarfs and Extrasolar Planets
• Disk Accretion Onto High-Mass Planets
• Spectral and Photometric Diagnostics of Giant Planet Formation Scenarios
• Models of the in situ formation of detected extrasolar giant planets
• Structure and evolution of super-Earth to super-Jupiter exoplanets: I. heavy element enrichment in the interior
• The Deuterium-Burning Mass Limit for Brown Dwarfs and Giant Planets
• Statistical properties of exoplanets II. Metallicity, orbital parameters, and space velocities
• A new vision on giant planet interiors: the impact of double diffusive convection
• Disk eccentricity and embedded planets
• A Theory of Extrasolar Giant Planets
• Migration and giant planet formation
• High-contrast Imaging Search for Planets and Brown Dwarfs around the Most Massive Stars in the Solar Neighborhood
• The CORALIE survey for southern extrasolar planets. XVI. Discovery of a planetary system around HD 147018 and of two long period and massive planets orbiting HD 171238 and HD 204313
• A possible dividing line between massive planets and brown-dwarf companions
• Theory of planet formation and comparison with observation: Formation of the planetary mass-radius relationship

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