R. Lenzen

University of Cologne — Germany

Physics and Astronomy · Physical Sciences

37h-index7.3kcitations221works0.02yr avg
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Research Topics

Stellar, planetary, and galactic studies(107), Astronomy and Astrophysical Research(105), Adaptive optics and wavefront sensing(90), Astrophysics and Star Formation Studies(43), Calibration and Measurement Techniques(31)

Publications220 total

Vorwort zu Heft 3-2025
Zeitschrift für Außen- und Sicherheitspolitik·2025Open Access
Beier, C., Messner, D., & Preuß, H.-J. (Hrsg.) (2020). Globale Wanderungsbewegungen. Beiträge der internationalen Zusammenarbeit zum Umgang mit Flucht und Migration.
Zeitschrift für Außen- und Sicherheitspolitik·2021Open Access
Vorwort
Zeitschrift für Außen- und Sicherheitspolitik·2021Open Access
First direct detection of an exoplanet by optical interferometry; Astrometry and K-band spectroscopy of HR8799 e
Kölner Universitäts PublikationsServer (Universität zu Köln)·2019· 44 citedOpen Access
VizieR Online Data Catalog: HR8799e K-band spectrum (Lacour+, 2019)
VizieR Online Data Catalog·2019
First direct detection of an exoplanet by optical interferometry
Astronomy and Astrophysics·2019· 142 citedOpen Access
GRAVITY - Reaching out to SgrA* with VLTI
HAL (Le Centre pour la Communication Scientifique Directe)·2019
GRAVITY chromatic imaging of <i>η</i> Car’s core
Astronomy and Astrophysics·2018· 9 citedOpen Access
CARMENES: high-resolution spectra and precise radial velocities in the red and infrared
Ground-based and Airborne Instrumentation for Astronomy VII·2018· 75 citedOpen Access
VizieR Online Data Catalog: 324 CARMENES M dwarfs velocities (Reiners+, 2018)
VizieR Online Data Catalog·2018
GRAVITY chromatic imaging of η Car's core. Milliarcsecond resolution imaging of the wind-wind collision zone (Brγ, He I)
White Rose Research Online (University of Leeds, The University of Sheffield, University of York)·2018· 4 citedOpen Access
Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole
HAL (Le Centre pour la Communication Scientifique Directe)·2018· 696 cited
The CARMENES search for exoplanets around M dwarfs - HD 147379b: A nearby Neptune in the temperate zone of an early-M dwarf
arXiv (Cornell University)·2017· 34 citedOpen Access
The CARMENES search for exoplanets around M dwarfs
Astronomy and Astrophysics·2017· 61 citedOpen Access
The CARMENES search for exoplanets around M dwarfs
Astronomy and Astrophysics·2017· 240 citedOpen Access
The CARMENES search for exoplanets around M dwarfs: High-resolution optical and near-infrared spectroscopy of 324 survey stars
LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas)·2017· 105 citedOpen Access
VizieR Online Data Catalog: HD147379 b velocity curve (Reiners+, 2018)
VizieR Online Data Catalog·2017
The CARMENES search for exoplanets around M dwarfs. First visual-channel radial-velocity measurements and orbital parameter updates of seven M-dwarf planetary systems
arXiv (Cornell University)·2017· 61 citedOpen Access
VizieR Online Data Catalog: CARMENES radial velocity curves of 7 M-dwarf (Trifonov+, 2018)
VizieR Online Data Catalog·2017
The CARMENES search for exoplanets around M dwarfs
Astronomy and Astrophysics·2017· 150 citedOpen Access
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Frequent Co-authors

W. Brandner(25), W. Laun(15), Thomas Henning(14), A. Quirrenbach(14), W. Seifert(14), Markus Hartung(12), Th. Henning(12), A. P. Hatzes(12), J. A. Caballero(11), I. Ribas(11), P. J. Amado(11), J. Aceituno(11), D. Barrado(11), S. Becerril(11), V. J. S. Béjar(11), A. Claret(11), J. Colomé(11), C. Feiz(11), D. Galadí-Enríquez(11), J. I. Gónzalez Hernández(11)