Planets, binaries, planets in binaries, and binary planets
Séminaire IPAG de Markus Janson (Stockholm University), jeudi 10 janvier 2019 à 11h00, salle Manuel Forestini
Recent scientific advances have revealed a rich set of architectural configurations among stellar/planetary systems. Studying the statistics, physical properties, and orbits of such systems provides clues about their formation and early evolution. Their orbits can also yield dynamical masses which are otherwise unattainable, and which are crucial for purposes such as calibration of theoretical stellar and planetary mass-luminosity relationships, or constraining the ages of young regions. Over the past several year, we have been running (and/or are running) a series of interconnected studies on young multiple stellar/planetary systems. These include the SPOTS survey, which is the largest high-contrast imaging survey for circumbinary to date ; the AstraLux large M-dwarf multiplicity survey, which has detected hundreds of new low-mass binaries that are being long-term monitored for orbital characterization ; and a study of multiplicity at the lowest substellar masses, extending into the so-called planetary mass regime. Here we will present results from these surveys that highlight the unique science cases that can be studied in multi-star/planet systems, and their implications for our understanding of the formation and structure of stellar and planetary systems.