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Gravitational instabilities in a protosolar-like disc III: molecular line detection and sensitivities

Autor: Evans, M. G., Hartquist, T. W., Caselli, P., Boley, A. C., Ilee, J. D., Rawlings, J. M. C.

At the time of formation, protoplanetary discs likely contain a comparable mass to their host protostars. As a result, gravitational instabilities (GIs) are expected to play a pivotal role in the early phases of disc evolution. However, as these youn

Externí odkaz: http://arxiv.org/abs/1810.04537

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The chemistry of protoplanetary fragments formed via gravitational instabilities

Autor: Ilee, J. D., Forgan, D. H., Evans, M. G., Hall, C., Booth, R., Clarke, C. J., Rice, W. K. M., Boley, A. C., Caselli, P., Hartquist, T. W., Rawlings, J. M. C.

In this paper, we model the chemical evolution of a 0.25 M$_{\odot}$ protoplanetary disc surrounding a 1 M$_{\odot}$ star that undergoes fragmentation due to self-gravity. We use Smoothed Particle Hydrodynamics including a radiative transfer scheme,

Externí odkaz: http://arxiv.org/abs/1708.01815

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Gravitational instabilities in a protosolar-like disc II: continuum emission and mass estimates

Autor: Evans, M. G., Ilee, J. D., Hartquist, T. W., Caselli, P., Szucs, L., Purser, S. J. D., Boley, A. C., Durisen, R. H., Rawlings, J. M. C.

Gravitational instabilities (GIs) are most likely a fundamental process during the early stages of protoplanetary disc formation. Recently, there have been detections of spiral features in young, embedded objects that appear consistent with GI-driven

Externí odkaz: http://arxiv.org/abs/1706.00254

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Gravitational instabilities in a protosolar-like disc I: dynamics and chemistry

Autor: Evans, M. G., Ilee, J. D., Boley, A. C., Caselli, P., Durisen, R. H., Hartquist, T. W., Rawlings, J. M. C.

To date, most simulations of the chemistry in protoplanetary discs have used 1+1D or 2D axisymmetric $\alpha$-disc models to determine chemical compositions within young systems. This assumption is inappropriate for non-axisymmetric, gravitationally

Externí odkaz: http://arxiv.org/abs/1508.00773

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