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Gaia Data Release 2. Gaia Radial Velocity Spectrometer

M. Cropper 1 D. Katz 2 P. Sartoretti 2 T. Prusti 3 H. de Bruijne 3 F. Chassat 4 P. Charvet 4 J. Boyadjian 4 M. Perryman 5 G. Sarri 3 P. Gare 3 M. Erdmann 3 U. Munari 6 T. Zwitter 7 M. Wilkinson 8 F. Arenou 2 A. Vallenari 6 A. Gómez 2 P. Panuzzo 2 G. Seabroke 1 C. Allende Prieto 1, 9 K. Benson 1 O. Marchal 2 H. Huckle 1 M. Smith 1 C. Dolding 1 K. Janßen 10 Y. Viala 2 R. Blomme 11 S. Baker 1 S. Boudreault 12, 1 F. Crifo 2 C. Soubiran 13 Y. Frémat 11 Gérard Jasniewicz 14 A. Guerrier 15 L. Guy 16 C. Turon 2 A. Jean-Antoine-Piccolo 17 F. Thevenin 18 M. David 19 E. Gosset 20, 21 Y. Damerdji 22, 20
Abstract : This paper presents the specification, design, and development of the Radial Velocity Spectrometer (RVS) on the European Space Agency’s Gaia mission. Starting with the rationale for the full six dimensions of phase space in the dynamical modelling of the Galaxy, the scientific goals and derived top-level instrument requirements are discussed, leading to a brief description of the initial concepts for the instrument. The main part of the paper is a description of the flight RVS, considering the optical design, the focal plane, the detection and acquisition chain, and the as-built performance drivers and critical technical areas. After presenting the pre-launch performance predictions, the paper concludes with the post-launch developments and mitigation strategies, together with a summary of the in-flight performance at the end of commissioning.
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https://hal.archives-ouvertes.fr/hal-01868135
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Submitted on : Wednesday, December 1, 2021 - 10:57:51 AM
Last modification on : Tuesday, January 4, 2022 - 5:37:15 AM

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M. Cropper, D. Katz, P. Sartoretti, T. Prusti, H. de Bruijne, et al.. Gaia Data Release 2. Gaia Radial Velocity Spectrometer. Astronomy and Astrophysics - A&A, EDP Sciences, 2018, 616, pp.id.A5. ⟨10.1051/0004-6361/201832763⟩. ⟨hal-01868135⟩

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