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Astronomy in Heidelberg

Astronomy in Heidelberg

ZAH-ITAZAH-ARIZAH-LSWMPIAMPIKHITSAltstadtHdAAstronomy at Heidelberg University

ZAH-ITAZAH-ARIZAH-LSWMPIAMPIKHITSAltstadtHdACenter for Astronomy Heidelberg (ZAH)Astronomy at Heidelberg UniversityInstitute for Theoretical Astrophysics (ITA)Cosmology (Group Bartelmann)Star Formation (Group Klessen)Planet Formation (Group Dullemond)Astronomical Calculational Institute (ARI)Galactic Neighborhood (Group Grebel)Gravitational Lensing (Group Wambsgan)Cosmology (Group Schfer)State Observatory (LSW)Galactic Archeology (Group Christlieb)Instrumentation (Group Quirrenbach)Shown here: Only groups offull professors

There are intotal 23 groupsHeidelberg Institute for Theoretical Studies (HITS) Funded by the Tschirra StiftungComputational Astrophysics (Group Springel)(Exo-)Planet(-Formation) at ZAH(Exo-)Planet(-Formation) at ZAHInstitute for Theoretical Astrophysics (ITA)Planet formation (Group Dullemond)Protoplanetary dust (Group Gail) Astronomical Calculational Institute (ARI)Exoplanets by microlensing (Group Wambsgan)N-body Astrophysics (Group Spurzem)State Observatory (LSW)CARMENES (Group Quirrenbach)Example from Microlensing(Group Wambsgan)

Cassan et al. 2012, Nature Conclusion:

There must be manyundetected low-massplanets (Neptunes).

Quote:One or more bound planets per Milky Way star from microlensing observationsExample from N-body(Group Spurzem)

A Hybrid method of planetformation modeling:

- Many small particles = statistical methods

- Few big particles = N-bodyExample from dust growth(Group Dullemond)How to break throughthe meter-size barrier.

Low sticking efficiency

Particle abundanceWindmark, Birnstiel, Gttler, Blum, Dullemond, Henning 2012Example from dust growth(Group Dullemond + Grenoble)Comparing withobservationsPinilla, Benisty & Birnstiel (2012)

Example from asteroids(Group Gail)Henke, Gail, Trieloff, Schwarz, Kleine (2012)

Example from RV planet detection(Group Quirrenbach)