Abschlussarbeiten

Doktorarbeiten (in Arbeit):

Óscar Carrion González:Higher-order atmospheric effects in the optical occultations and phase curves of exoplanets (Mentor: Antonio García Muñoz)

Jasmin Lynn MacKenzie: Interior-Atmosphere Feedback Mechanisms of sub-Neptunian Exoplanets (with Philipp Baumeister, Mentor: Mareike Godolt, J. L. Grenfell and Nicola Tosi)

 

Doktorarbeit (abgeschlossen):

Fabian Wunderlich (TU Berlin): Characterization of atmospheric parameters of terrestrial extrasolar planets around cool host stars (Mentor: J. L. Grenfell and M. Godolt, Verteidigung: 1. April 2021)

Markus Scheucher (TU Berlin): Habitability of terrestrial planets around active M-stars: The effect of stellar radiation and cosmic rays upon climate and photochemistry (Mentoren:  J. L. Grenfell and M. Godolt, Verteidigung: 8. Dezember 2020)

Hugo Hellard (TU Berlin): Interiors of exoplanets by constraining the fluid Love number k2 (Mentor: Szilárd Csizmadia, Verteidigung: 26. Oktober 2020)

Elyar Sedaghati: Exploring Alien Skies: Detection and Characterisation of Exoplanetary Atmospheres with Ground-based Transmission Spectroscopy

 

Masterarbeiten (abgeschlossen):

• Iva Vilović (TU Berlin): Investigating the Influence of Life upon Earth-like Atmospheres (abgeschlossen im Juli 2019)

 

• Nikoleta Ilić Petković (TU Berlin): Titan full disk phase curves for intensity and polarization (abgeschlossen im Januar 2019)

 

• Jeremias Pfaff (TU Berlin): Zur Häufigkeit extrasolarer Planeten - Eine Abschätzung auf Grundlage der K2 Mission (abgeschlossen im Februar 2017)

"A central objective of this work is to assess of the occurrence rate of extrasolar planets in the Milky Way. Based on this assessment, a correlation between the frequency of planets and their properties (radius, orbital period) as well as stellar characteristics (effective temperature, metallicity) will be evaluated. The motivation for this lies in the understanding of planet formation and evolution models, which themselves rely upon an exhaustive as possible knowledge of the frequency and diversity of planetary systems. The aim of these models is to explain the enormous variety of planetary systems.
The population analysis attempted within this work is based upon the data from the K2 mission."

• Ramon Rahner (TU Berlin): Atmospheric model studies of hot gas planets (abgeschlossen im November 2016)

"In the course of this work a model for the calculation of transmission spectra for hot gas planets was developed in order to address the science question as to
the effect of key parameters upon the spectral appearance. Three independent models were coupled together to achieve this goal. After the validation of the
so-called GCEGT model it was then used for a parameter variation study on the famous HJ HD209458b. The parameters were the internal temperature,
the ratio  between mean visible and mean thermal opacity, the mean thermal opacity and the metallicity. The GCEGT model was then validated and a suitable parameter space was determined. This led to 32 different scenarios with maximum and minimum values of each parameter."

• Dominik Roy (TU Berlin): Spectral Classification of Variable Stars in Field 19 of BEST II (abgeschlossen im April 2016)

"This work focuses on the spectral classification of variable stars. These stars were observed with BEST II from March to September 2010 and were followed up by spectroscopy done with AAOmega in February 2012. The spectral classification is done by comparing the observed spectra with a grid of synthetic spectra created with SME (Spectroscopy Made Easy) using cross-correlation and a chi square fit. The goal is to gain a better understanding of binary star evolution."

 

Diplomarbeiten (abgeschlossen):

• Susann Badran (Universität Bielefeld): Atmosphärenmodellation erdähnlicher Planeten in der habitablen Zone um M-Zwergsterne mit konsistenten biologischen Methan Emissionen (abgeschlossen im September 2016)

"Die Wechselwirkungen zwischen Klimavariablen und der biogenen Aktivität von Mikroorganismen unter Anwendung eines eindimensionalen gekoppelten Klima-Photochemiemodells, welches wiederum an einen biogeochemischen Kreislauf koppelt, sollen untersucht werden. Es werden sowohl Szenarien für erdähnliche extrasolare Planeten, die in der habitablen Zone um M-Zwergsterne kreisen, als auch - im Vergleich - die frühe Erde modelliert."

Bachelorarbeiten:

• Viktoria Arlt (TU Berlin): Searching for Substellar Companions via the Beaming Effect in CoRoT and Kepler Lightcurves (abgeschlossen im Juli 2016)

"Twelve lightcurves of transiting objects from the CoRoT mission were analysed by the application of a model that searches for beaming, ellipsoidal and reflection effects in photometric time-series. The lightcurves of CoRoT-3 and of four other stars with known brown dwarfs as orbiting companions from the Kepler mission helped to evaluate the model. Six lightcurves showed high stellar activity from the host star that is interfering with the beaming variation. From the other six, two substellar and five very low mass stellar candidates could be found via the beaming effect."

Weitere abgeschlossene Arbeiten:

Doktorarbeiten:

• Alexander Hölscher (2015): Formation of C3 and C2 in Cometary Comae
• Stefanie Gebauer (2013): Atmospheric evolution of terrestrial exoplanets
• Daniel Kitzmann (2013):  Formation and evolution of clouds in atmospheres of terrestrial extrasolar planets
• Thomas Fruth (2013): Search for Planetary Transits and Stellar Variability with BESTII and ASTEP
• Joachim Stock (2013): Chemical Pathway Analysis of the Martian Atmosphere
• Mareike Godolt (2012):  3D Climate Modeling of Earth-like Extrasolar Planets Orbiting  Different Types of Central Stars
• Barbara Stracke (2012): Modeling of terrestrial extrasolar planetary atmospheres in view of  habitability
• Philip von Paris (2010): The atmospheres of Super-Earths
• Petr Kabath (2009): Characterization of the stellar variability in CoRoT fields with BEST telescopes
• Pascal Hedelt (2009): Radiative transfer in the exosphere of Saturn's moon Titan
• Michael Weiler (2007): Study of the Gas and Dust Activity of Recent Comets
• Holger Voß (2006): Developing a ground-based search system for transits of extrasolar planets

Masterarbeiten:

• Dominik Roy (April 2016): Spectral Classification of Variable Stars in Field 19 of BEST II
• Franz Feldtkeller (August 2015): An investigation into the accuracy limit of the Transit Timing Method to derive exoplanet masses
• Matthias Morbitzer (April 2015): Automated Classification of Variable Stars for the BEST II and NGTS Surveys
• Engin Keles (März 2015): The effect of pressure in Earth-like atmospheres on climate and biosignature
• Elyar Sedaghati (Juni 2014): On the potentials and limitations of transmission spectroscopy in detection of exo-atmosphere 
• Fachreddin Tabataba-Vakili (2013):  Modelling the Influence of Cosmic Rays on the atmospheric chemistry of Earth-like exoplanets
• Antonio Pilello (2010): Photometric data reduction and variability characterisation of BEST target field F8

Diplomarbeiten:

• Arik Rohloff (2012): Die Auswirkung hochenergetischer Strahlung auf CH4, N2O, und O3 in der Atmosphäre von Planeten in der habitablen Zone
• Falk Dambowsky (2011): Modellierung heißer Atmosphären terrestrischer Exoplaneten
• Stefan Linz (2011): Neuanalyse von Mehrfarbenphotometrie planetarer Transits
• André Bathke (2011): Modellierung von Lichtkurven bedeckungsveränderlicher Sterne in Bildfeldern von BEST und BEST II
• Karol Palczynski (2010): Analyse photochemischer Reaktionswege in erdähnlichen Planetenatmosphären
• Melanie Schulze (2010): Photometrische Datenauswertung zur Suche nach variablen Sternen und Transits extrasolarer Planeten im BEST-Datensatz F15
• Martin Günther (2009): Investigations of methods for the detection of exoplanetary transits
• Thomas Pasternacki (2009): Optimierte photometrische Datenauswertung zur Suche variabler Sterne und Planetentransits in BEST-Daten
• Thomas Fruth (2008): Perspektiven fü die Transitsuche: Vergleich des Standortes Dome C (Antarktis) mit Standorten gemäßigter Breite
• Tino Wiese (2007): Analyse stellarer Lichtkurven zur Suche nach Transits extrasolarer Planeten
• Philip von Paris (2006): Modellierung CO2-dominierter Atmosphären terrestrischer Planeten
• Pascal Hedelt (2006): Transitspektroskopie extrasolarer Planeten am Beispiel des Venustransits

Bachelorarbeiten:

• David König (2015): A study of M-dwarf stars observed with CoRoT and Kepler
• Martin Gärtner:  Numerische Modellierung von TTVs extrasolarer Planetensysteme am Beispiel ausgewählter CoRoT-Systeme
• Stephan Breitner: Evaluierung möglicher Beobachtungsszenarien für die geplante ESA-Mission PLATO
• Maximilian Stilz (2012): Transit Timing Variation with BEST II´
• Pirmin Kustin (2012): Charakterisierung des korrelierten Rauschens  in CoRoT- und BEST II-Daten
• Andre Röhm (2012): Untersuchung von N2O als  potentielle Biosignatur in terrestrischen Exoplaneten
• Fachreddin Tabataba-Vakili (2011): Effects of Cosmic Rays on Trace Gases in Earth-Like Atmospheres
• Sabrina Kirste (2008): Prospects for Transit Timing Analysis of Extrasolar Planets