High-resolution observation of exoplanet atmospheres

Characterizing atmospheres of rocky and gaseous exoplanets applying high-spectral resolution transit and eclipse observations. Searching for atomic and molecular atmospheric absorption and emission features to constrain e.g. the atmospheric composition, atmospheric wind properties, and atmospheric escape processes.

Marshall C. Johnson, Ji Wang, Anusha Pai Asnodkar, Aldo S. Bonomo, B. Scott Gaudi, Thomas Henning, Ilya Ilyin, Engin Keles, Luca Malavolta, Matthias Mallonn, Karan Molaverdikhani, Valerio Nascimbeni, Jennifer Patience, Katja Poppenhaeger, Gaetano Scandariato, Everett Schlawin, Evgenya Shkolnik, Daniela Sicilia, Alessandro Sozzetti, Klaus G. Strassmeier, Christian Veillet, Fei Yan (2023): The PEPSI Exoplanet Transit Survey (PETS). II. A Deep Search for Thermal Inversion Agents in KELT-20 b/MASCARA-2 b with Emission and Transmission Spectroscopy. Published in The Astronomical Journal, Volume 165, Number 4, Pages 157

Engin Keles, Matthias Mallonn, Daniel Kitzmann, Katja Poppenhäger, H. Jens Hoeijmakers, Ilya Ilyin, Xanthippi Alexoudi, Thorsten A. Carroll, Julian Alvarado-Gomez, Laura Ketzer, Aldo Bonomo, Francesco Borsa, Scott Gaudi, Thomas Henning, Luca Malavolta, Karan Molaverdikhani, Valerio Nascimbeni, Jennifer Patience, Lorenzo Pino, Gaetano Scandariato, Everett Schlawin, Evgenya Shkolnik, Daniela Sicilia, Alessandro Sozzetti, Mary G. Foster, Christian Veillet, Ji Wang, Fei Yan, Klaus G. Strassmeier, (2022): The Pepsi Exoplanet Transit Survey (PETS) I: Investigating the presence of a silicate atmosphere on the super-Earth 55 Cnc e. Published in Monthly Notices of the Royal Astronomical Society, Volume 513, Issue 1, Pages 1544-1556.

Engin Keles. (2021): Spectral signature of atmospheric winds in high-resolution transit observations. Published in Monthly Notices of the Royal Astronomical Society, Volume 502, Issue 1, Pages 1456–1468.

K. G. Strassmeier, I. Ilyin, E. Keles, M. Mallonn, A. Järvinen, M. Weber, F. Mackebrandt, J. M. Hill. (2020): High-resolution spectroscopy and spectropolarimetry of the total lunar eclipse January 2019. Published in Astronomy & Astrophysics, Volume 635, id.A156, 19 pp.

X. Alexoudi, M. Mallonn, E. Keles, K. Poppenhäger, C. von Essen and K. G. Strassmeier. (2020): Role of the impact parameter in exoplanet transmission spectroscopy. Published in Astronomy & Astrophysics, Volume 640, id.A134, 9 pp.

E. Keles, D. Kitzmann, M. Mallonn, X. Alexoudi, L. Fossati, L. Pino, J. V. Seidel, T. A. Carroll, M. Steffen, I. Ilyin, K. Poppenhaeger, K. G. Strassmeier, C. von Essen, V. Nascimbeni, J. D. Turner. (2020): Probing the atmosphere of HD189733b with the Nai and Ki lines. Published in Monthly Notices of the Royal Astronomical Society, Volume 498, Issue 1, Pages 1023–1033.

Engin Keles, Matthias Mallonn, Carolina von Essen, Thorsten A. Carroll, Xanthippi Alexoudi, Lorenzo Pino, Ilya Ilyin, Katja Poppenhaeger, Daniel Kitzmann, Valerio Nascimbeni, Jake D. Turner, Klaus G. Strassmeier. (2019): The potassium absorption on HD189733 and HD209458b. Published in Monthly Notices of the Royal Astronomical Society: Letters, Volume 489, Issue 1, Pages L37–L41

M. Mallonn, C. von Essen, E. Herrero, X. Alexoudi, T. Granzer, M. Sosa, K. G. Strassmeier, G. Bakos, D. Bayliss, R. Brahm, M. Bretton, F. Campos, L. Carone, K. D. Colón, H. A. Dale, D. Dragomir, N. Espinoza, P. Evans, F. Garcia, S.-H. Gu, P. Guerra, Y. Jongen, A. Jordán, W. Kang, E. Keles, T. Kim, M. Lendl, D. Molina, M. Salisbury, F. Scaggiante, A. Shporer, R. Siverd, E. Sokov, I. Sokova and A. Wünsche. (2019): Ephemeris refinement of 21 hot Jupiter exoplanets with high timing uncertainties. Published in Astronomy & Astrophysics, Volume 622, id.A81, 21 pp.

X. Alexoudi, M. Mallonn, C. von Essen, J. D. Turner, E. Keles, J. Southworth, L. Mancini, S. Ciceri, T. Granzer, C. Denker, E. Dineva and K. G. Strassmeier.(2018): Deciphering the atmosphere of HAT-P-12b: solving discrepant results. Published in Astronomy & Astrophysics, Volume 620, id.A142, 20 pp.

Engin Keles, John Lee Grenfell, Mareike Godolt, Barbara Stracke, Heike Rauer. (2018): The Effect of Varying Atmospheric Pressure upon Habitability and Biosignatures of Earth-like Planets. Published in Astrobiology, Volume 18, Issue 2, pp.116-132