Giant Planets and Brown Dwarfs Form in Different Ways

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The Theory of Brown Dwarfs and Extrasolar Giant Planets

Straddling the traditional realms of the planets and the stars, objects below the edge of the main sequence have such unique properties, and are being discovered in such quantities, that one can rightly claim that a new field at the interface of planetary science and astronomy is being born. In this review, we explore the essential elements of the theory of brown dwarfs and giant planets, as we...

متن کامل

The Accretion of Brown Dwarfs and Planets by Giant Stars

We study the response of the structure of an asymptotic giant branch (AGB) star to the accretion of a brown dwarf or planet in its interior. In particular, we examine the case in which the brown dwarf spirals-in, and the accreted matter is deposited at the base of the convective envelope and in the thin radiative shell surrounding the hydrogen burning shell. In our spherically symmetric simulat...

متن کامل

Shades of Black: Searching for Brown Dwarfs & Giant Planets

We have searched, so far in vain, for brown dwarfs or giant planets in the vicinity of several nearby stars using cameras built at Université de Montréal attached to the CFHT Adaptive Optics system. Here, we show how pairs of images taken simultaneously through separate filters on, and off, the 1.6 μm methane absorption band, can be used to completely defeat speckles, the dominant noise source,...

متن کامل

Atmospheric Chemistry in Giant Planets , Brown Dwarfs , and Low - Mass Dwarf Stars II . Sulfur and Phosphorus

Thermochemical equilibrium and kinetic calculations are used to model sulfur and phosphorus chemistry in giant planets, brown dwarfs, and extrasolar giant planets (EGPs). The chemical behavior of individual Sand P-bearing gases and condensates is determined as a function of pressure, temperature, and metallicity. The results are independent of particular model atmospheres and, in principle, the...

متن کامل

New Ideas in the Theory of Extrasolar Giant Planets and Brown Dwarfs

I. INTRODUCTION The study of extrasolar giant planets (EGPs*) and brown dwarfs via reflex stellar motion, broad–band photometry, and spectroscopy has finally come into its own. Doppler spectroscopy alone has revealed about 15 objects in the giant planet/brown dwarf regime, including was a milestone since Gl229 B displays methane spectral features and low surface fluxes that are unique to object...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Eos

سال: 2019

ISSN: 2324-9250

DOI: 10.1029/2019eo127841