5 papers
Modelling shadows in scattered light observations as signals from companions in protoplanetary discs
Deniz Akansoy, Helen C. Petrou, Giulia Ballabio +1
Over the past decade, SPHERE scattered light observations of protoplanetary discs have revealed previously unseen features with unprecedented resolution. One such feature are radia…
The past, present and future of observations of externally irradiated disks
Planet formation environments collaboration, Megan Allen, Rossella Anania +51
Recent years have seen a surge of interest in the community studying the effect of ultraviolet radiation environment, predominantly set by OB stars, on protoplanetary disc evolutio…
Understanding what helium absorption tells us about atmospheric escape from exoplanets
Giulia Ballabio, James E. Owen
Atmospheric escape is now considered the major contributing factor in shaping the demographic of detected exoplanets. However, inferences about the exoplanet populations strongly d…
JWST captures a sudden stellar outburst and inner disk wall destruction
Chengyan Xie, Ilaria Pascucci, Dingshan Deng +6
We present JWST/MIRI observations of T~Cha, a highly variable (3-5\,mag) accreting Sun-like star surrounded by a disk with a large (\,au) dust gap. We find that…
A tell-tale tracer for externally irradiated protoplanetary disks: comparing the [CI] 8727 A line and ALMA observations in proplyds
Mari-Liis Aru, Karina Mauco, Carlo F. Manara +15
The evolution of protoplanetary disks in regions with massive OB stars is influenced by externally driven winds that deplete the outer parts of disks. These winds have previously b…