doi.eso.org

• Walcher, C. Jakob [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Banerji, Manda [Institute of Astronomy, University of Cambridge, UK]
• Battistini, Chiara [Zentrum für Astronomie der Universität Heidelberg/Landessternwarte, Germany]
• Bell, Cameron P. M. [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Bellido-Tirado, Olga [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Bensby, Thomas [Lund Observatory, Lund University, Sweden]
• Bestenlehner, Joachim M. [Physics and Astronomy, University of Sheffield, UK]
• Boller, Thomas [Max-Planck-Institut für extraterrestrische Physik, Garching, Germany]
• Brynnel, Joar [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Casey, Andrew [School of Physics and Astronomy, Monash University, Melbourne, Australia]
• Chiappini, Cristina [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Christlieb, Norbert [Zentrum für Astronomie der Universität Heidelberg/Landessternwarte, Germany]
• Church, Ross [Lund Observatory, Lund University, Sweden]
• Cioni, Maria-Rosa L. [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Croom, Scott [Sydney Institute for Astronomy, University of Sydney, Australia]
• Comparat, Johan [Max-Planck-Institut für extraterrestrische Physik, Garching, Germany]
• Davies, Luke J. M. [International Centre for Radio Astronomy Research / University of Western Australia, Perth, Australia]
• de Jong, Roelof S. [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Dwelly, Tom [Max-Planck-Institut für extraterrestrische Physik, Garching, Germany]
• Enke, Harry [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Feltzing, Sofia [Lund Observatory, Lund University, Sweden]
• Feuillet, Diane [Max-Planck-Institut für Astronomie, Heidelberg, Germany]
• Fouesneau, Morgan [Max-Planck-Institut für Astronomie, Heidelberg, Germany]
• Ford, Dominic [Lund Observatory, Lund University, Sweden]
• Frey, Steffen [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Gonzalez-Solares, Eduardo [Institute of Astronomy, University of Cambridge, UK]
• Gueguen, Alain [Max-Planck-Institut für extraterrestrische Physik, Garching, Germany]
• Howes, Louise [Lund Observatory, Lund University, Sweden]
• Irwin, Mike [Institute of Astronomy, University of Cambridge, UK]
• Klar, Jochen [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Kordopatis, Georges [Observatoire de la Côte d’Azur, Nice, France]
• Korn, Andreas [Department of Physics and Astronomy, Uppsala universitet, Sweden]
• Krumpe, Mirko [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Kushniruk, Iryna [Lund Observatory, Lund University, Sweden]
• Lam, Man I [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Lewis, James [Institute of Astronomy, University of Cambridge, UK]
• Lind, Karin [Department of Physics and Astronomy, Uppsala universitet, Sweden]
• Liske, Jochen [Hamburger Sternwarte, Universität Hamburg, Germany]
• Loveday, Jon [University of Sussex, Brighton, UK]
• Mainieri, Vincenzo [European Southern Observatory (ESO)]
• Martell, Sarah [School of Physics, University of New South Wales, Sydney, Australia]
• Matijevic, Gal [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• McMahon, Richard [Institute of Astronomy, University of Cambridge, UK]
• Merloni, Andrea [Max-Planck-Institut für extraterrestrische Physik, Garching, Germany]
• Murphy, David [Institute of Astronomy, University of Cambridge, UK]
• Niederhofer, Florian [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Norberg, Peder [Department of Physics, Durham University, UK]
• Pramskiy, Alexander [Zentrum für Astronomie der Universität Heidelberg/Landessternwarte, Germany]
• Romaniello, Martino [European Southern Observatory (ESO)]
• Robotham, Aaron S. G. [International Centre for Radio Astronomy Research / University of Western Australia, Perth, Australia]
• Rothmaier, Florian [Zentrum für Astronomie der Universität Heidelberg/Landessternwarte, Germany]
• Ruchti, Gregory [Lund Observatory, Lund University, Sweden]
• Schnurr, Olivier [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany; Cherenkov Telescope Array Observatory, Bologna, Italy]
• Schwope, Axel [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Smedley, Scott [Australian Astronomical Optics – Macquarie, Sydney, Australia]
• Sorce, Jenny [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany; CRAL, Observatoire de Lyon, Saint-Genis-Laval, France]
• Starkenburg, Else [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Stilz, Ingo [Zentrum für Astronomie der Universität Heidelberg/Landessternwarte, Germany]
• Storm, Jesper [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Tempel, Elmo [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany; Tartu Observatory, University of Tartu, Estonia]
• Thi, Wing-Fai [Max-Planck-Institut für extraterrestrische Physik, Garching, Germany]
• Traven, Gregor [Lund Observatory, Lund University, Sweden]
• Valentini, Marica [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• van den Ancker, Mario [European Southern Observatory (ESO)]
• Walton, Nicholas [Institute of Astronomy, University of Cambridge, UK]
• Winkler, Roland [Leibniz-Institut für Astrophysik Potsdam (AIP), Germany]
• Worley, C. Clare [Institute of Astronomy, University of Cambridge, UK]

The 4MOST instrument is a multi-object spectrograph that will address Galactic and extragalactic science cases simultaneously by observing targets from a large number of different surveys within each science exposure. This parallel mode of operation and the survey nature of 4MOST require some distinct 4MOST- specific operational features within the overall operations model of ESO. The main feature is that the 4MOST Consortium will deliver, not only the instrument, but also contractual services to the user community, which is why 4MOST is also described as a facility. This white paper concentrates on information particularly useful to answering the forthcoming Call for Letters of Intent.