Mass-loss rate constraints on the observed distribution of exoplanets

Autor(en)
Patricio Cubillos, Luca Fossati, Nikolai Erkaev, Colin Johnstone, Helmut Lammer, Monika Lendl, Petra Odert, Kristina Kislyakova, Ines Juvan
Abstrakt

We present a uniform analysis of the atmospheric escape rate of Neptune-like planets with known radius and mass. We find that nearly 15% of Neptunes exhibit extremely high mass-loss rates, that defy evolution and composition models of their atmospheres. We conclude that at least one of the established techniques to constrain the size or mass of exoplanets is consistently producing biased values for Neptune planets.

Organisation(en)
Institut für Astrophysik
Externe Organisation(en)
Österreichische Akademie der Wissenschaften (ÖAW), Russian Academy of Sciences
Publikationsdatum
09-2018
ÖFOS 2012
103003 Astronomie, 103004 Astrophysik
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/47ba4c29-1e24-4452-8972-9a9902563c20