AGU Session: Cool stars and their influence on (exo)planetary habitability

Dear Colleagues,

We would like to invite you to participate and submit an abstract to the upcoming AGU fall Meeting (Virtual only) Session: Cool stars and their influence on (exo)planetary habitability.

Submission link:

Deadline for abstract submission:
August 4, 2021

Description: Due to their large number within the Galaxy, their small radii, and closer-in habitable zones (HZ), G-, K- and M-dwarf stars are prime targets for detecting habitable rocky (Earth-like) exoplanets. Next generation missions such as JWST, ARIEL, the ELT and LIFE could in principle detect atmospheric biosignatures (indicators for life) in exoplanetary atmospheres of planets orbiting distant stars. It is therefore timely for theoretical background studies focusing on the particle- and radiation environment of Earth-like exoplanets in the HZ of G-, K-, and M-dwarf stars and their imprint on planetary habitability. Making use of what we have learnt from the Sun and our solar system we can extend our knowledge to extrasolar planetary systems with potentially Earth-like exoplanets.

The session brings together scientists from all fields of research that are related to solar, astrophysical, and exoplanetary sciences. It will allow the sharing of expertise amongst researchers working on different aspects of this interdisciplinary scientific field, allowing showcases of recent advancements in the field of specialization. We solicit contributions related but not limited to:

• Modeling stellar astrospheres and the corresponding energy-dependent CR flux
• Modeling the environment of close-in exoplanets around G-, K-, and M-dwarf stars, in particular, modeling of mass-loss rates, angular momentum loss rates, the magnetic field configuration as well as the density and velocity of the stellar winds of G-, K- and M-dwarf stars
• Modeling stellar CMEs
• Evaluation and quantification of the solar UV-, X-ray, and energetic particle flux relationships and their extension to G-, K-, and M-dwarf stars
• The imprint of the stellar radiation field by modeling the magnetospheric transport and particle interactions within (exo)planetary atmospheres
• Atmospheric modeling studies of climate and (biosignature) photochemistry and the influence of stellar activity

Konstantin Herbst
John Lee Grenfell
Athanasios Papaioannou