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Episodes of Emission Lines in the Spectra of Red Giants as Signatures of Remnant Planetary Systems

Published online by Cambridge University Press:  26 May 2016

G. M. Rudnitskij
G. M. Rudnitskij*
Affiliation:
Sternberg Astronomical Institute, Moscow State University, 13 Universitetskij prospekt, Moscow, 119899 Russia

Abstract

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When a star with a mass of about 1 solar mass enters the red giant stage of its evolution, the radius of its atmosphere reaches several astronomical units. If the star possessed during its mainsequence life a planetary system, similar to the solar system, the planets will be embedded into a rather dense and hot medium. Effects of a planet revolving around a red giant at a short distance (inside its circumstellar envelope) are discussed. Systematic monitoring of the spectra of red giants may reveal periodicities in the emergence of shock-induced emission lines and thus to detect probable remnant planetary systems around these stars.

Type
Part I: Discovery and study of extrasolar planets - current
Information
Symposium - International Astronomical Union , Volume 202: Planetary Systems in the Universe – Observation, Formation and Evolution , 2004 , pp. 115 - 117
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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