Abstract
Precise and, if possible, accurate characterization of exoplanets cannot be dissociated from the characterization of their host stars. In this chapter we discuss different methods and techniques used to derive fundamental properties and atmospheric parameters of exoplanet-host stars. The main limitations, advantages and disadvantages, as well as corresponding typical measurement uncertainties of each method are presented.
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Notes
- 1.
The detection of two terrestrial-mass companions around the pulsar PSR1257+12 had already been announced in 1992 (Wolszczan and Frail 1992).
- 2.
For example, during ExoPAG 11 (https://exoplanets.nasa.gov/exep/events/14/) and the K2 meeting that took place in Porto in 2016 (http://www.iastro.pt/research/conferences/k2meeting/).
- 3.
- 4.
ExoFOP (https://exofop.ipac.caltech.edu/).
- 5.
Note that the derivation of this parameter also depends on the limb-darkening coefficient and orbital eccentricity of the transiting planet (e.g., Mortier et al. 2013).
- 6.
Note that spectroscopy usually provides the vsini and photometry gives the rotational period of the stars.
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Acknowledgements
VA would like to thank the SOC for inviting him to IV th Azores International Advanced School in Space Sciences held in the Azores Islands, Portugal. VA, NCS and SGS acknowledge the support from Fundação para a Ciência e a Tecnologia (FCT) through national funds and from FEDER through COMPETE2020 by the following grants UID/FIS/04434/2013 and POCI-01-0145-FEDER-007672, PTDC/FIS-AST/7073/2014 and POCI-01-0145-FEDER-016880, and PTDC/FIS-AST/1526/2014 and POCI-01-0145-FEDER-016886. VA, NCS and SGS acknowledge the support from FCT through Investigador FCT contracts IF/00650/2015/CP1273/CT0001, IF/00169/2012/CP0150/CT0002, and IF/00028/2014/CP1215/CT0002.
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Adibekyan, V., Sousa, S.G., Santos, N.C. (2018). Characterization of Exoplanet-Host Stars. In: Campante, T., Santos, N., Monteiro, M. (eds) Asteroseismology and Exoplanets: Listening to the Stars and Searching for New Worlds. Astrophysics and Space Science Proceedings, vol 49. Springer, Cham. https://doi.org/10.1007/978-3-319-59315-9_12
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