Abstract
The Penn State/Toruń Centre for Astronomy Search for Planets Around Evolved Stars is a high-accuracy radial velocity (RV) survey aiming at planet detection around giant stars. It is based on observations obtained with the 9.2 m Hobby-Eberly Telescope. As proper interpretation of high accuracy RV data for red giants requires complete spectral analysis of targets we perform spectral modeling of all stars included in the survey. Typically, rotation velocities and metallicities are determined in addition to stellar luminosities and temperatures, which allows us to estimate stellar ages and masses. Here we present preliminary results of metallicity studies in our sample. We search for a metallicity dependence similar to that for dwarfs by comparing our results for a sample of 22 giants earlier than K5 showing significant RV variations with a control sample of 58 relatively RV-stable stars.
| Original language | English (US) |
|---|---|
| Title of host publication | Extrasolar Planets in Multi-Body Systems |
| Subtitle of host publication | Theory and Observations |
| Pages | 201-205 |
| Number of pages | 5 |
| DOIs | |
| State | Published - Dec 1 2010 |
| Event | International Conference Eztrasolar Planets in Multi-Body Systems: Theory and Observations - Torun, Poland Duration: Aug 25 2008 → Aug 29 2008 |
Publication series
| Name | EAS Publications Series |
|---|---|
| Volume | 42 |
| ISSN (Print) | 1633-4760 |
| ISSN (Electronic) | 1638-1963 |
Other
| Other | International Conference Eztrasolar Planets in Multi-Body Systems: Theory and Observations |
|---|---|
| Country | Poland |
| City | Torun |
| Period | 8/25/08 → 8/29/08 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
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Is there a metallicity enhancement in planet-hosting red giants? / Zieliński, P.; Niedzielski, A.; Adamów, M.; Wolszczan, Alexander.
Extrasolar Planets in Multi-Body Systems: Theory and Observations. 2010. p. 201-205 (EAS Publications Series; Vol. 42).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Is there a metallicity enhancement in planet-hosting red giants?
AU - Zieliński, P.
AU - Niedzielski, A.
AU - Adamów, M.
AU - Wolszczan, Alexander
PY - 2010/12/1
Y1 - 2010/12/1
N2 - The Penn State/Toruń Centre for Astronomy Search for Planets Around Evolved Stars is a high-accuracy radial velocity (RV) survey aiming at planet detection around giant stars. It is based on observations obtained with the 9.2 m Hobby-Eberly Telescope. As proper interpretation of high accuracy RV data for red giants requires complete spectral analysis of targets we perform spectral modeling of all stars included in the survey. Typically, rotation velocities and metallicities are determined in addition to stellar luminosities and temperatures, which allows us to estimate stellar ages and masses. Here we present preliminary results of metallicity studies in our sample. We search for a metallicity dependence similar to that for dwarfs by comparing our results for a sample of 22 giants earlier than K5 showing significant RV variations with a control sample of 58 relatively RV-stable stars.
AB - The Penn State/Toruń Centre for Astronomy Search for Planets Around Evolved Stars is a high-accuracy radial velocity (RV) survey aiming at planet detection around giant stars. It is based on observations obtained with the 9.2 m Hobby-Eberly Telescope. As proper interpretation of high accuracy RV data for red giants requires complete spectral analysis of targets we perform spectral modeling of all stars included in the survey. Typically, rotation velocities and metallicities are determined in addition to stellar luminosities and temperatures, which allows us to estimate stellar ages and masses. Here we present preliminary results of metallicity studies in our sample. We search for a metallicity dependence similar to that for dwarfs by comparing our results for a sample of 22 giants earlier than K5 showing significant RV variations with a control sample of 58 relatively RV-stable stars.
UR - http://www.scopus.com/inward/record.url?scp=78751656361&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78751656361&partnerID=8YFLogxK
U2 - 10.1051/eas/1042023
DO - 10.1051/eas/1042023
M3 - Conference contribution
AN - SCOPUS:78751656361
SN - 9782759804856
T3 - EAS Publications Series
SP - 201
EP - 205
BT - Extrasolar Planets in Multi-Body Systems
ER -