December 11, 2024
Facultad de Ciencias Físicas, UCM
Europe/Madrid timezone

Exoplanetary systems around M dwarfs with radial velocities: use of multidimensional Gaussian process to quantify the stellar noise

Dec 11, 2024, 10:10 AM
10m
Aula Magna M1 (Facultad de Ciencias Físicas, UCM)

Aula Magna M1

Facultad de Ciencias Físicas, UCM

Plaza de Ciencias, 1, 28040 Madrid

Speaker

Javier Benegas Paredes (IPARCOS-UCM)

Description

In order to find Earth-like planets in the habitable zone of M dwarfs, it becomes essential to quantify the stellar noise in the radial velocity (RV) data in order to measure planetary signals. This is why the use of multidimensional Gaussian processes can be a clear evolution towards the study and characterisation of exoplanets and their host stars, this will be done using the pyaneti software. To do so, we will use RV data and spectroscopic activity indicators (FWHM, Hα) from CARMENES and ESPRESSO simultaneously for three already studied planetary systems: GJ 338 B and GJ 1002. With our spectroscopic analysis we could model the stellar activity by determining the stellar rotation period and also obtain the planetary parameters of the exoplanets.

Presentation materials