In this paper, we model the chemical evolution of a 0.25 M[sun] protoplanetary disc surrounding a 1 M[sun] star that undergoes fragmentation due to self-gravity. We use Smoothed Particle Hydrodynamics including a radiative transfer scheme, along with time-dependent chemical evolution code to follow the composition of the disc and resulting fragments over approximately 4000 yrs. Initially, four quasi-stable fragments are formed, of which two are eventually disrupted by tidal torques in the disc. From the results of our chemical modelling, we identify species that are abundant in the fragments (e.g. H₂O, H₂S, HNO, N₂, NH₃, OCS, SO), species that are abundant in the spiral shocks within the disc (e.g. CO, CH₄, CN, CS, H₂CO), and species which ...
Disc fragmentation provides an important mechanism for producing low-mass stars in prestellar cores....
Young protostellar discs may be massive enough that they become unstable and fragment, leading to th...
Inside-Out Planet Formation (IOPF) proposes that the abundant systems of close-in Super-Earths and M...
In this paper, we model the chemical evolution of a 0.25 M⊙ protoplanetary disc surrounding a 1 M⊙ s...
MGE gratefully acknowledges a studentship from the European Research Council (ERC; project PALs 3206...
It is likely that most protostellar systems undergo a brief phase where the protostellar disc is sel...
DHF gratefully acknowledges support from the ECOGAL project, grant agreement 291227, funded by the E...
We present high-resolution 3D smoothed particle hydrodynamics simulations of the formation and evolu...
This thesis presents a study of protoplanetary discs around young, low mass protostars. Such discs a...
Until now, axisymmetric, α-disc models have been adopted for calculations of the chemical compositio...
When a Giant Molecular Cloud (GMC) collapses to form a stellar core, conservation of angular moment...
Stars are likely to form with non-zero initial angular momentum, and will consequently possess a sub...
In this thesis, I study numerical and semi-analytical models of self-gravitating protostellar discs...
Partial condensation of dust from the Solar nebula is likely responsible for the diverse chemical co...
Author Institution: Universite de Bordeaux, Observatoire Aquitain des Sciences de l'Univers, 2 rue d...
Disc fragmentation provides an important mechanism for producing low-mass stars in prestellar cores....
Young protostellar discs may be massive enough that they become unstable and fragment, leading to th...
Inside-Out Planet Formation (IOPF) proposes that the abundant systems of close-in Super-Earths and M...
In this paper, we model the chemical evolution of a 0.25 M⊙ protoplanetary disc surrounding a 1 M⊙ s...
MGE gratefully acknowledges a studentship from the European Research Council (ERC; project PALs 3206...
It is likely that most protostellar systems undergo a brief phase where the protostellar disc is sel...
DHF gratefully acknowledges support from the ECOGAL project, grant agreement 291227, funded by the E...
We present high-resolution 3D smoothed particle hydrodynamics simulations of the formation and evolu...
This thesis presents a study of protoplanetary discs around young, low mass protostars. Such discs a...
Until now, axisymmetric, α-disc models have been adopted for calculations of the chemical compositio...
When a Giant Molecular Cloud (GMC) collapses to form a stellar core, conservation of angular moment...
Stars are likely to form with non-zero initial angular momentum, and will consequently possess a sub...
In this thesis, I study numerical and semi-analytical models of self-gravitating protostellar discs...
Partial condensation of dust from the Solar nebula is likely responsible for the diverse chemical co...
Author Institution: Universite de Bordeaux, Observatoire Aquitain des Sciences de l'Univers, 2 rue d...
Disc fragmentation provides an important mechanism for producing low-mass stars in prestellar cores....
Young protostellar discs may be massive enough that they become unstable and fragment, leading to th...
Inside-Out Planet Formation (IOPF) proposes that the abundant systems of close-in Super-Earths and M...