Publications

Radial Velocity and Astrometric Evidence for a Close Companion to Betelgeuse

MacLeod, M., ... Granzer, T., ... Strassmeier, K. G., ... Weber, M., 2025
The Astrophysical Journal, 978, 1, 50; published January 2025

doi:10.3847/1538-4357/ad93c8, NASA ADS

Participating AIP sections and groups: Telescope Control and Robotics, High-resolution Spectroscopy and Polarimetry

Long-term Doppler imaging of the star XX Trianguli indicates chaotic non-periodic dynamo

Strassmeier, K. G., Kővári, Z., Weber, M., Granzer, T., 2024
Nature Communications, 15, 1, 9986; published December 2024

doi:10.1038/s41467-024-54329-4, NASA ADS

Participating AIP sections and groups: High-resolution Spectroscopy and Polarimetry, Telescope Control and Robotics

Solar disk integration polarimeter: An automated disk‑integration full‑Stokes‑vector solar feed for the Potsdam Echelle Polarimetric and Spectroscopic Instrument spectrograph

Strassmeier, K. G., Ilyin, I., Woche, M., Dionies, F., Weber, M., Järvinen, A., Denker, C., Dineva, E., Verma, M., Granzer, T., Bittner, W., Bauer, S., Paschke, J., Önel, H., 2024
Astronomische Nachrichten, 345, e20240033; published July 2024

doi:10.1002/asna.20240033, NASA ADS

Participating AIP sections and groups: High-resolution Spectroscopy and Polarimetry, Technical Section / Mechanical Engineering, Telescope Control and Robotics, Solar Physics, Technical Section / Technical Software, Electronics, Detectors, Technical Section / Precision Mechanics Workshop, Technical Section

The Great Dimming of Betelgeuse: The photosphere as revealed by tomography over the past 15 yr

Jadlovský, D., Granzer, T., Weber, M., ... Strassmeier, K. G., Poppenhäger, K., 2024
Astronomy and Astrophysics, 685, A124; published May 2024

doi:10.1051/0004-6361/202348846, NASA ADS

Participating AIP sections and groups: Telescope Control and Robotics, High-resolution Spectroscopy and Polarimetry, Stellar Physics and Exoplanets

A star under multiple influences. Magnetic activity in V815 Her, a compact 2+2 hierarchical system

Kővári, Z., Strassmeier, K. G., ... Granzer, T., ... Weber, M., 2024
Astronomy and Astrophysics, 684, A94; published April 2024

doi:10.1051/0004-6361/202348324, NASA ADS

Participating AIP sections and groups: Telescope Control and Robotics, High-resolution Spectroscopy and Polarimetry

Still alive and kicking: A significant outburst in changing-look AGN Mrk 1018

Brogan, R., Krumpe, M., Homan, D., Urrutia, T., Granzer, T., ..., 2023
Astronomy and Astrophysics, 677, A116; published September 2023

doi:10.1051/0004-6361/202346475, NASA ADS

Participating AIP sections and groups: Galaxies and Quasars / X-ray Astronomy, Galaxies and Quasars, 3D and Multi Object Spectroscopy, Telescope Control and Robotics

A rotational age for the open cluster NGC 2281. The possibility of using the fast rotator sequence for accurate cluster age determinations

Fritzewski, D. J., Barnes, S. A., Weingrill, J., Granzer, T., Cole-Kodikara, E., Strassmeier, K. G., 2023
Astronomy and Astrophysics, 674, A152; published June 2023

doi:10.1051/0004-6361/202346083, NASA ADS

Participating AIP sections and groups: Stellar Physics and Exoplanets / Stellar Activity, Telescope Control and Robotics

EI Eridani: A star under the influence. The effect of magnetic activity in the short and long term

Kriskovics, L., ... Granzer, T., ..., 2023
Astronomy and Astrophysics, 674, A143; published June 2023

doi:10.1051/0004-6361/202245767, NASA ADS

Participating AIP sections and groups: Telescope Control and Robotics

The rotation period distribution in the young open cluster NGC 6709

Cole-Kodikara, E. M., Barnes, S. A., Weingrill, J., Granzer, T., 2023
Astronomy and Astrophysics, 673, A119; published May 2023

doi:10.1051/0004-6361/202245441, NASA ADS

Participating AIP sections and groups: Stellar Physics and Exoplanets / Stellar Activity, Telescope Control and Robotics

New insights into the rotational evolution of near-solar age stars from the open cluster M 67

Gruner, D., Barnes, S. A., Weingrill, J., 2023
Astronomy and Astrophysics, 672, A159; published April 2023

doi:10.1051/0004-6361/202345942, NASA ADS

Participating AIP sections and groups: Stellar Physics and Exoplanets / Stellar Activity, Telescope Control and Robotics

Publications

Latest publications

Dr. Thomas Granzer