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Dr. Thomas Granzer

Image of Thomas Granzer
Research Data Infrastructure
Group Head
Office: HH/106
Phone: +49 331 7499 350
tgranzernothing@aip.de

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

Publications

Latest refereed publications, retrieved from NASA ADS:

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 research groups: Stellar, Solar and Exoplanetary Physics, Telescope Control and Robotics (now: Research Data Infrastructure), High-resolution Spectroscopy and Polarimetry (now: Astronomical Spectroscopic Instrumentation)
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 research groups: Stellar, Solar and Exoplanetary Physics, Telescope Control and Robotics (now: Research Data Infrastructure), High-resolution Spectroscopy and Polarimetry (now: Astronomical Spectroscopic Instrumentation)
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
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 research groups: Stellar, Solar and Exoplanetary Physics, Stellar Physics and Exoplanets, Telescope Control and Robotics (now: Research Data Infrastructure), High-resolution Spectroscopy and Polarimetry (now: Astronomical Spectroscopic Instrumentation)
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 research groups: Telescope Control and Robotics (now: Research Data Infrastructure), High-resolution Spectroscopy and Polarimetry (now: Astronomical Spectroscopic Instrumentation)
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 research groups: Galaxies and Quasars, Telescope Control and Robotics (now: Research Data Infrastructure), 3D and Multi Object Spectroscopy (now: Astronomical Spectroscopic Instrumentation), X-ray Astronomy
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 research groups: Stellar, Solar and Exoplanetary Physics, Telescope Control and Robotics (now: Research Data Infrastructure), Stellar Activity
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 research groups: Telescope Control and Robotics (now: Research Data Infrastructure)
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 research groups: Telescope Control and Robotics (now: Research Data Infrastructure), Stellar Activity
VPNEP: Detailed characterization of TESS targets around the Northern Ecliptic Pole. I. Survey design, pilot analysis, and initial data release
Strassmeier, K. G., Weber, M., Gruner, D., Ilyin, I., Steffen, M., Baratella, M., Järvinen, S., Granzer, T., Barnes, S. A., Carroll, T. A., Mallonn, M., Sablowski, D., ..., 2023
Astronomy and Astrophysics, 671, A7; published March 2023
doi:10.1051/0004-6361/202245255, NASA ADS
Participating AIP research groups: Stellar, Solar and Exoplanetary Physics, Stellar Physics and Exoplanets, Telescope Control and Robotics (now: Research Data Infrastructure), High-resolution Spectroscopy and Polarimetry (now: Astronomical Spectroscopic Instrumentation), Optics, Stellar Activity