Spectral line distortions in the presence of a close-in planet

David Charbonneau, Saurabh Jha, Robert W. Noyes

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We discuss the interpretation of the distortions to the stellar spectral lines, with particular attention to line bisectors in the presence of an orbiting planetary companion. We present a simple model whereby light reflected by the companion can cause temporal variations to the observed line profiles. These distortions have a characteristic signature that depends on the inclination angle of the system. For the known close-in extrasolar giant planets, the expected amplitude of the effect might not be far from current detection capabilities. This method could be used to detect the presence of the companion directly, yielding the orbital inclination and hence the planetary mass. Futhermore, a detection would measure a combination of the planetary radius and albedo, from which a minimum radius may be deduced.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume507
Issue number2 PART II
StatePublished - Jan 1 1998

Fingerprint

inclination
line spectra
planets
planet
planetary mass
radii
albedo
temporal variation
signatures
orbitals
causes
profiles
detection
effect
method

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • Planetary systems
  • Stars: individual (τ Bootis, 51 Pegasi)
  • Techniques: spectroscopic

Cite this

Charbonneau, David ; Jha, Saurabh ; Noyes, Robert W. / Spectral line distortions in the presence of a close-in planet. In: Astrophysical Journal. 1998 ; Vol. 507, No. 2 PART II.
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Charbonneau, D, Jha, S & Noyes, RW 1998, 'Spectral line distortions in the presence of a close-in planet', Astrophysical Journal, vol. 507, no. 2 PART II.

Spectral line distortions in the presence of a close-in planet. / Charbonneau, David; Jha, Saurabh; Noyes, Robert W.

In: Astrophysical Journal, Vol. 507, No. 2 PART II, 01.01.1998.

Research output: Contribution to journalArticle

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