RT info:eu-repo/semantics/bachelorThesis
T1 The Rossiter-McLaughlin effect in exoplanets
A1 Rivera Colomer, Mar
K1 Exoplanets
K1 Rossiter-McLaughlin effect
K1 Transit detection method
AB Historically, one of the burning questions of astronomy deals with the exoplanet’s topic, inother words the search of any planet beyond the Solar System. In this project we introduce a firsttheoretical chapter in which the definition of exoplanet is stipulated, the main detection techniquesdescribed and a brief analysis of the instruments used. The aim of this study is studying theRossiter-McLaughlin (RM) effect in WASP-69b using CARMENES data. The RM is an anomalyof the RV due the blockage of part of the host star’s light. It can be detected with high-resolutionspectrographs, such as HARPS and CARMENES, that are enough accurate to detect the Dopplershifts in the spectrum of the star caused by the planet’s motion. The RM effect can be used tostudy and characterise the atmosphere of exoplanets, although it is difficult to resolve the spectrallines stems from high stellar activity and telluric contamination from the terrestrial atmosphere.We will observe how the telluric contamination and the stellar activity alter the RV dataand the RM parameters. To do this, we will use a pipeline called SERVAL, removing the highlycontaminated regions to compare if this has an improvement on the results. The data used are fromtwo transit observations of WASP-69b with the CARMENES spectrograph, located at the CalarAlto observatory. In addition, we will measure the chromatic RM effect of WASP-69b followingthe method described by DiGloria et al. (2015).In the results we can observe that the errors are clearly reduced when we exclude the contaminated orders, as expected. However, for the chromatic RM effect the errors are too large toconclude something precise. To yield good results, and get accurate atmospheric properties, moretransits are needed as well as high resolution observations with larger telescopes.
YR 2019
FD 2019
LK http://riull.ull.es/xmlui/handle/915/16260
UL http://riull.ull.es/xmlui/handle/915/16260
LA es
DS Repositorio institucional de la Universidad de La Laguna
RD 26-nov-2024