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Dr. Matthias Steffen

Image of Matthias Steffen

Research Topics

  • Hydrodynamics
  • Radiative Transfer
  • Numerical Simulations
  • Spectroscopy, chemical Abundances
  • Stellar Atmospheres, Stellar Convection
  • Solar and stellar activity
  • Stellar Structure and Evolution
  • Stellar Pulsations, Helio- and Asteroseismology
  • Solar-terrestrial relations

  • Stellar Winds
  • Planetary Nebulae
Stellar Physics and Exoplanets
Senior Scientist
Office: HH/111
Phone: +49 331 7499 371
msteffennothing@aip.de

Leibniz-Institut
für Astrophysik Potsdam (AIP)
An der Sternwarte 16
14482 Potsdam

Publications

Latest refereed publications, retrieved from NASA ADS:

3D spectroscopic analysis of helium-line white dwarfs
Cukanovaite, E., ... Steffen, M., 2021
Monthly Notices of the Royal Astronomical Society, 501, 4, 5274; published March 2021
doi:10.1093/mnras/staa3684, NASA ADS
Participating AIP sections and groups: Stellar Physics and Exoplanets
The solar gravitational redshift from HARPS-LFC Moon spectra⋆. A test of the general theory of relativity
González Hernández, J. I., ... Steffen, M., ..., 2020
Astronomy and Astrophysics, 643, A146; published November 2020
doi:10.1051/0004-6361/202038937, NASA ADS
Participating AIP sections and groups: Stellar Physics and Exoplanets
Probing the atmosphere of HD189733b with the Na I and K I lines
Keles, E., ... Mallonn, M., Alexoudi, X., ... Carroll, T. A., Steffen, M., Ilyin, I., Poppenhäger, K., Strassmeier, K. G., ..., 2020
Monthly Notices of the Royal Astronomical Society, 498, 1, 1023; published October 2020
doi:10.1093/mnras/staa2435, NASA ADS
16th Potsdam Thinkshop: The rotation periods of cool stars: Measurements, uses, connections and prospects
Barnes, S. A., Steffen, M., Strassmeier, K. G., 2020
Astronomische Nachrichten, 341, 5, 485; published June 2020
doi:10.1002/asna.202013832, NASA ADS
Improving spectroscopic lithium abundances. Fitting functions for 3D non-LTE corrections in FGK stars of different metallicity
Mott, A., Steffen, M., Caffau, E., Strassmeier, K. G., 2020
Astronomy and Astrophysics, 638, A58; published June 2020
doi:10.1051/0004-6361/201937047, NASA ADS
Participating AIP sections and groups: Stellar Physics and Exoplanets, Cosmic Magnetic Fields
The 6Li/7Li isotopic ratio in the metal-poor binary CS22876-032
González Hernández, J. I., ... Steffen, M., ..., 2019
Astronomy and Astrophysics, 628, A111; published August 2019
doi:10.1051/0004-6361/201936011, NASA ADS
Participating AIP sections and groups: Stellar Physics and Exoplanets
Confronting expansion distances of planetary nebulae with Gaia DR2 measurements
Schönberner, D., Steffen, M., 2019
Astronomy and Astrophysics, 625, A137; published May 2019
doi:10.1051/0004-6361/201935184, NASA ADS
TOPoS. V. Abundance ratios in a sample of very metal-poor turn-off stars
François, P., ... Steffen, M., ..., 2018
Astronomy and Astrophysics, 620, A187; published December 2018
doi:10.1051/0004-6361/201834375, NASA ADS
Participating AIP sections and groups: Stellar Physics and Exoplanets
Hot bubbles of planetary nebulae with hydrogen-deficient winds. II. Analytical approximations with application to BD + 30°3639
Heller, R., Jacob, R., Schönberner, D., Steffen, M., 2018
Astronomy and Astrophysics, 620, A98; published December 2018
doi:10.1051/0004-6361/201832683, NASA ADS
3D non-LTE corrections for Li abundance and 6Li/7Li isotopic ratio in solar-type stars. I. Application to HD 207129 and HD 95456
Harutyunyan, G., Steffen, M., Mott, A., ... Strassmeier, K. G., 2018
Astronomy and Astrophysics, 618, A16; published October 2018
doi:10.1051/0004-6361/201832852, NASA ADS
Participating AIP sections and groups: Stellar Physics and Exoplanets, Cosmic Magnetic Fields