A HET search for planets around evolved stars

Andrzej Niedzielski, Alexander Wolszczan

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We present our ongoing survey of 1000 GK-giants with the 9.2-m Hobby-Eberly Telescope in search for planets around evolved stars. The stars selected for this survey are brighter than 11 mag and are located in the section of the HR-diagram, which is approximately delimited by the main sequence, the instability strip, and the coronal dividing line. We use the High Resolution Spectrograph to obtain stellar spectra for radial velocity measurements with a 4-6 m s 1 precision. So far, the survey has discovered a planetary-mass companion to the K0-giant HD 17092, and it has produced a number of plausible planet candidates around other stars. Together with other similar efforts, our program provides information on planet formation around intermediate mass main sequence-progenitors and it will create the experimental basis with which to study dynamics of planetary systems around evolving stars.

Original languageEnglish (US)
Pages (from-to)43-47
Number of pages5
JournalProceedings of the International Astronomical Union
Volume3
Issue numberS249
DOIs
StatePublished - Oct 1 2007

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planets
planet
stars
planetary mass
stellar spectra
Hertzsprung-Russell diagram
planetary systems
diagram
velocity measurement
radial velocity
spectrographs
strip
telescopes
high resolution
programme

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

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A HET search for planets around evolved stars. / Niedzielski, Andrzej; Wolszczan, Alexander.

In: Proceedings of the International Astronomical Union, Vol. 3, No. S249, 01.10.2007, p. 43-47.

Research output: Contribution to journalArticle

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