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First 3D grid-based gas-dust simulations of circumstellar discs with an embedded planet
Monthly Notices of the Royal Astronomical Society, 2021Substructures are ubiquitous in high resolution (sub-)millimeter continuum observations of circumstellar discs. They are possibly caused by forming planets embedded in their disc.
F. Binkert, J. Szulágyi, T. Birnstiel
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Resolution of the circumstellar gas around the Be star Ψ Persei
Nature, 1992S. Dougherty, A. Taylor
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Gas Phase Reactions in Interstellar and Circumstellar Media
2023What are the types of gas phase reaction useful in constructing an effective astrochemical network? We discuss radiative association, exchange reactions, recombination reactions of ions with electrons, photoionization of atoms and molecules by starlight, collisional ionization by fast particle and by X-rays.
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The circumstellar gas of sigma orionis E
Astrophysics and Space Science, 1985In order to explain the variable Hα emission and the eclipse-like light variation of σ Ori E, we investigated the circumstellar gas trapped by the stellar magnetic field and corotating with the star. By considering the potential along the magnetic field line, we found that the gas concentrates to a potential minimum.
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Circumstellar Dense Gas in B5 IRS1
1990High resolution maps showing dense clumps of gas within ~ 5 × 1016cm of the low luminosity young star B5 IRS1 are presented.
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Spectral Energy Distributions of Circumstellar Gas in Algols
1993Developments in computers now have made it practical to treat the gas flow and radiation problem in matter-transferring binaries. The computation consists of four separable parts: (1) gas flow, (2) radiative properties, in particular, emission line strengths and profiles, (3) generation of spectral energy distributions by spatial integration with ...
Dirk Terrell, R. E. Wilson
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The Gas to Dust Ratio in Circumstellar Envelopes
1985Mass loss rates for evolved stars, with both [0] > [C] and [0] < [C] can be found using observations of thermal emission in the CO rotational lines. Observations of the CO(1–0) line have been made of fifty stars using the Bell Laboratories 7-m antenna, and models of the circumstellar shell used to derive mass loss rates from these stars (Knapp and ...
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2014
From the very early observations completed in 1984, it was clear that some gas was present in the circumstellar environment. In particular the CaII lines were showing very strong absorption signatures never observed in the local ISM toward similarly nearby stars. From the comparison of the two first observations of these lines it became also clear that
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From the very early observations completed in 1984, it was clear that some gas was present in the circumstellar environment. In particular the CaII lines were showing very strong absorption signatures never observed in the local ISM toward similarly nearby stars. From the comparison of the two first observations of these lines it became also clear that
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The interaction of supernova 1987A with dense circumstellar gas
Nature, 1988The light travel time effects on the evolution of line fluxes, line profiles, and spatial structure of the emission from supernova 1987A are described. Current high spectral resolution observations suggest a lower limit to the age of the shell of 5000 yr and suggest a relatively low shell velocity.
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