Thesis

Stellar and Orbital evolution during the Red-giant phase

• Call:

  IDPASC Portugal - PHD Programme 2019

• Academic Year:

  2019 / 2020

• Domain:

  Astrophysics

• Supervisor:

  Alexandre Correia

• Co-Supervisor:

• Institution:

  Universidade de Coimbra

• Host Institution:

  Universidade de Coimbra

• Abstract:

  In the next 5 billion years, the Sun will start to cool and expand, becoming a Red-giant star. During this process, the Sun radii will increase hundreds of times, and will engulf the orbits of the inner planets. However, during this process the orbits of the planets will also expand, and there is a possibility that they are never cached by the solar envelope. Nevertheless, the orbital scattering may also give rise to close encounters between the planets, which will cause collisions between them or ejections from the Solar System. During this Ph.D we want to study the simultaneous solar and orbital evolution of the Solar System during the last stages of the solar life. In particular, we wonder what will be the fate of the inner planets, and, in particular, the final destiny of the Earth. We will also apply our model to the already detected planets around Red-giant stars.