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Deriving High-Precision Radial Velocities

  • Pedro FigueiraEmail author
Conference paper
Part of the Astrophysics and Space Science Proceedings book series (ASSSP, volume 49)

Abstract

This chapter describes briefly the key aspects behind the derivation of precise radial velocities. I start by defining radial velocity precision in the context of astrophysics in general and exoplanet searches in particular. Next I discuss the different basic elements that constitute a spectrograph, and how these elements and overall technical choices impact on the derived radial velocity precision. Then I go on to discuss the different wavelength calibration and radial velocity calculation techniques, and how these are intimately related to the spectrograph’s properties. I conclude by presenting some interesting examples of planets detected through radial velocity, and some of the new-generation instruments that will push the precision limit further.

Notes

Acknowledgements

I acknowledge support by Fundaçãdo para a Ciência e a Tecnologia (FCT) through Investigador FCT contract of reference IF/01037/2013/CP1191/CT0001, and POPH/FSE (EC) by FEDER funding through the program “Programa Operacional de Factores de Competitividade - COMPETE”. I further acknowledge support from FCT in the form of an exploratory project of reference also IF/01037/2013/CP1191/CT0001. I acknowledge Peter Sport Café for showing me what a good gin tonic tastes like, and Mário João Monteiro, Mahmoudreza Oshagh and Vardan Adibekyan for reminding me that good science requires good statistics.

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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  1. 1.Instituto de Astrofísica e Ciências do EspaçoUniversidade do Porto, CAUPPortoPortugal

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