Accurate fundamental parameters and detailed abundance patterns from spectroscopy of 93 solar-type Kepler targets

We present a detailed spectroscopic study of 93 solar-type stars that are targets of the NASA/Kepler mission and provide detailed chemical composition of each target. We find that the overall metallicity is well represented by Fe lines. Relative abundances of light elements (CNO) and a elements are generally higher for low-metallicity stars. Our spectroscopic analysis benefits from the accurately measured surface gravity from the asteroseismic analysis of the Kepler light curves. The accuracy on the log g parameter is better than 0.03 dex and is held fixed in the analysis. We compare our Teff determination with a recent colour calibration of VT-KS [TYCHO V magnitude minus Two Micron All Sky Survey (2MASS) KS magnitude] and find very good agreement and a scatter of only 80 K, showing that for other nearby Kepler targets, this index can be used. The asteroseismic log g values agree very well with the classical determination using Fe iFe ii balance, although we find a small systematic offset of 0.08 dex (asteroseismic log g values are lower). The abundance patterns of metals, a elements and the light elements (CNO) show that a simple scaling by [Fe/H] is adequate to represent the metallicity of the stars, except for the stars with metallicity below -0.3, where a-enhancement becomes important. However, this is only important for a very small fraction of the Kepler sample. We therefore recommend that a simple scaling with [Fe/H] be employed in the asteroseismic analyses of large ensembles of solar-type stars.

To Access Resource:

Questions? Email Resource Support Contact:

  • opensky@ucar.edu
    UCAR/NCAR - Library

Resource Type publication
Temporal Range Begin N/A
Temporal Range End N/A
Temporal Resolution N/A
Bounding Box North Lat N/A
Bounding Box South Lat N/A
Bounding Box West Long N/A
Bounding Box East Long N/A
Spatial Representation N/A
Spatial Resolution N/A
Related Links N/A
Additional Information N/A
Resource Format PDF
Standardized Resource Format PDF
Asset Size N/A
Legal Constraints

Copyright 2012 Authors. Published under license by John Wiley & Sons for the Royal Meteorological Society. The definitive version is available at http://onlinelibrary.wiley.com.
Access Constraints None
Software Implementation Language N/A

Resource Support Name N/A
Resource Support Email opensky@ucar.edu
Resource Support Organization UCAR/NCAR - Library
Distributor N/A
Metadata Contact Name N/A
Metadata Contact Email opensky@ucar.edu
Metadata Contact Organization UCAR/NCAR - Library

Author Bruntt, H.
Basu, S.
Smalley, B.
Chaplin, W.
Verner, G.
Bedding, T.
Catala, C.
Gazzano, J.
Molenda-Zakowicz, J.
Thygesen, A.
Uytterhoeven, K.
Hekker, S.
Huber, D.
Karoff, C.
Mathur, Savita
Mosser, B.
Appourchaux, T.
Campante, T.
Elsworth, Y.
Garcia, R.
Handberg, R.
Metcalfe, Travis
Quirion, P.
Regulo, C.
Roxburgh, I.
Stello, D.
Christensen-Dalsgaard, J.
Kawaler, S.
Kjeldsen, H.
Morris, R.
Quintana, E.
Sanderfer, D.
Publisher UCAR/NCAR - Library
Publication Date 2012-06-01T00:00:00
Digital Object Identifier (DOI) Not Assigned
Alternate Identifier N/A
Resource Version N/A
Topic Category geoscientificInformation
Progress N/A
Metadata Date 2023-08-18T18:47:30.521179
Metadata Record Identifier edu.ucar.opensky::articles:11729
Metadata Language eng; USA
Suggested Citation Bruntt, H., Basu, S., Smalley, B., Chaplin, W., Verner, G., Bedding, T., Catala, C., Gazzano, J., Molenda-Zakowicz, J., Thygesen, A., Uytterhoeven, K., Hekker, S., Huber, D., Karoff, C., Mathur, Savita, Mosser, B., Appourchaux, T., Campante, T., Elsworth, Y., Garcia, R., Handberg, R., Metcalfe, Travis, Quirion, P., Regulo, C., Roxburgh, I., Stello, D., Christensen-Dalsgaard, J., Kawaler, S., Kjeldsen, H., Morris, R., Quintana, E., Sanderfer, D.. (2012). Accurate fundamental parameters and detailed abundance patterns from spectroscopy of 93 solar-type Kepler targets. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d7v69k63. Accessed 19 March 2025.

Harvest Source