R
Ralf Bender
Researcher at Max Planck Society
Publications - 542
Citations - 51741
Ralf Bender is an academic researcher from Max Planck Society. The author has contributed to research in topics: Galaxy & Redshift. The author has an hindex of 92, co-authored 423 publications receiving 49115 citations. Previous affiliations of Ralf Bender include Institut d'Astrophysique de Paris & ASTRON.
Papers
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Proceedings ArticleDOI
Pressure and temperature stabilization of an existing Echelle spectrograph III
Anna Brucalassi,Tobias Feger,Frank Grupp,Florian Lang-Bardl,Shaoming Hu,Ulrich Hopp,Ralf Bender +6 more
TL;DR: The Echelle spectrograph FOCES 1 is currently located at the laboratories of Munich University Observatories and it is being used as a test bed for a number of different issues related to high precision radial velocity spectroscopy as mentioned in this paper.
Journal ArticleDOI
Pan-STARRS1 variability of XMM-COSMOS AGN. I. Impact on photometric redshifts
T. Simm,Roberto P. Saglia,Mara Salvato,Ralf Bender,William S. Burgett,K. C. Chambers,Peter W. Draper,H. Flewelling,Nick Kaiser,Rolf-Peter Kudritzki,Eugene A. Magnier,Nigel Metcalfe,John L. Tonry,Richard J. Wainscoat,Christopher Waters +14 more
TL;DR: In this article, the influence of variability on the calculation of photo-z was investigated by applying three different input photometry sets for their fitting procedure. And they found that the photometry produced by the 3pi survey is sufficient to reliably detect variable sources provided that the fractional variability amplitude is at least 3%.
Proceedings ArticleDOI
NIP - The Near Infrared Imaging Photometer for Euclid
M. Schweitzer,Ralf Bender,Reinhard O. Katterloher,Frank Eisenhauer,Reiner Hofmann,Roberto P. Saglia,Rory Holmes,Oliver Krause,Hans-Walter Rix,Jeff Booth,Parker Fagrelius,Jason Rhodes,Suresh Seshadri,Alexandre Refregier,Jérôme Amiaux,J.-L. Auguères,Olivier Boulade,Christophe Cara,Adam Amara,Simon J. Lilly,Eli Atad-Ettedgui,Anna-Maria Di Giorgio,Ludovic Duvet,Christopher Kuehl,Mohsin Syed +24 more
TL;DR: The Euclid Imaging Consortium (EIC) as mentioned in this paper performed a near infrared imaging photometer for the Euclid space mission in the context of ESA's 2015 Cosmic Vision program, where the NIP channel was used to determine the photometric redshifts of over 2 billion galaxies collected over a wide survey area of 20 000 deg 2.
Posted Content
Towards A Census of Earth-mass Exo-planets with Gravitational Microlensing
J. P. Beaulieu,Eamonn Kerins,Shude Mao,David P. Bennett,Arnaud Cassan,S. Dieters,B. S. Gaudi,Andrew Gould,V. Batista,Ralf Bender,Stephane Brillant,K. H. Cook,C. Coutures,D. Dominis-Prester,J. Donatowicz,Pascal Fouqué,Eva K. Grebel,J. G. Greenhill,D. Heyrovsky,Keith Horne,D. Kubas,J. B. Marquette,J. W. Menzies,N. J. Rattenbury,Ignasi Ribas,Kailash C. Sahu,Yiannis Tsapras,Andrzej Udalski,C. Vinter +28 more
TL;DR: In this article, the basic concepts of the gravitational microlensing technique, summarise the current mode of discovery and outline future steps towards a complete census of planets including Earth-mass planets.
Proceedings ArticleDOI
Stability of the FOCES spectrograph using an astro-frequency comb as calibrator
Anna Brucalassi,Frank Grupp,Hanna Kellermann,Lei Wang,Florian Lang-Bardl,Nils Baisert,Shaoming Hu,Ulrich Hopp,Ralf Bender +8 more
TL;DR: In this paper, the results of a series of measurements conducted using the upgraded Fiber Optic Cassegrain Echelle Spectrograph (FOCES) intended to be operated at the 2.0 m Fraunhofer Telescope at the Wendelstein Observatory (Germany) in combination with a laser frequency comb as calibrator are shown.