A HET search for planets around evolved stars

Andrzej Niedzielski, Alex 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 s1 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

Fingerprint

Planets
planets
planet
stars
Hobbies
Telescopes
planetary mass
stellar spectra
Hertzsprung-Russell diagram
planetary systems
diagram
velocity measurement
radial velocity
spectrographs
strip
telescopes
Surveys and Questionnaires
high resolution

All Science Journal Classification (ASJC) codes

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

Cite this

@article{b8fe865764874f94bcc0b3b62a4febdd,
title = "A HET search for planets around evolved stars",
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 s1 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.",
author = "Andrzej Niedzielski and Alex Wolszczan",
year = "2007",
month = "10",
day = "1",
doi = "10.1017/S1743921308016347",
language = "English (US)",
volume = "3",
pages = "43--47",
journal = "Proceedings of the International Astronomical Union",
issn = "1743-9213",
publisher = "Cambridge University Press",
number = "S249",

}

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

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

Research output: Contribution to journalArticle

TY - JOUR

T1 - A HET search for planets around evolved stars

AU - Niedzielski, Andrzej

AU - Wolszczan, Alex

PY - 2007/10/1

Y1 - 2007/10/1

N2 - 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 s1 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.

AB - 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 s1 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.

UR - http://www.scopus.com/inward/record.url?scp=44249087905&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=44249087905&partnerID=8YFLogxK

U2 - 10.1017/S1743921308016347

DO - 10.1017/S1743921308016347

M3 - Article

AN - SCOPUS:44249087905

VL - 3

SP - 43

EP - 47

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

SN - 1743-9213

IS - S249

ER -