出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：In this paper I will discuss the current knowledge we have on planets orbiting other stars than our sun: exoplanets. Our ability to learn about exoplanets depends on the method we choose to search for them. Therefore I will give a short overview of the different detection techniques that are used to find planets. Special emphasis is placed on two techniques, radial velocity search and transit search. I will also focus on a long standing riddle of the field: The occurrence of gas giant planets on orbits with periods of only a few days (Hot-Jupiters). These planets are similar to Jupiter but orbit their stars much closer than even Mercury orbits our own sun. The detection of these Hot-Jupiters was a surprise, as it is thought that they cannot form so close to their stars. Recent measurements of the Rossiter-McLaughlin effect helped to shed light on the formation and evolution of these systems. Finally I will highlight some exciting new developments and recent detections of exoplanets in extreme environments.
