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  • Casagrande, L. (author)

Strömgren Survey for Asteroseismology and Galactic Archaeology: Let the SAGA Begin.

  • Article/chapterEnglish2014

Publisher, publication year, extent ...

  • 2014

Numbers

  • LIBRIS-ID:oai:lup.lub.lu.se:ca596199-58c0-407f-9da3-6f161787552d
  • https://lup.lub.lu.se/record/4558888URI
  • https://doi.org/10.1088/0004-637X/787/2/110DOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • Asteroseismology has the capability of precisely determining stellar properties that would otherwise be inaccessible, such as radii, masses, and thus ages of stars. When coupling this information with classical determinations of stellar parameters, such as metallicities, effective temperatures, and angular diameters, powerful new diagnostics for Galactic studies can be obtained. The ongoing Stromgren survey for Asteroseismology and Galactic Archaeology has the goal of transforming the Kepler field into a new benchmark for Galactic studies, similar to the solar neighborhood. Here we present the first results from a stripe centered at a Galactic longitude of 74 degrees and covering latitude from about 8 degrees to 20 degrees, which includes almost 1000 K giants with seismic information and the benchmark open cluster NGC 6819. We describe the coupling of classical and seismic parameters, the accuracy as well as the caveats of the derived effective temperatures, metallicities, distances, surface gravities, masses, and radii. Confidence in the achieved precision is corroborated by the detection of the first and secondary clumps in a population of field stars with a ratio of 2 to 1 and by the negligible scatter in the seismic distances among NGC 6819 member stars. An assessment of the reliability of stellar parameters in the Kepler Input Catalog is also performed, and the impact of our results for population studies in the Milky Way is discussed, along with the importance of an all-sky Stromgren survey.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Aguirre, V. Silva (author)
  • Stello, D. (author)
  • Huber, D. (author)
  • Serenelli, A. M. (author)
  • Cassisi, S. (author)
  • Dotter, A. (author)
  • Milone, A. P. (author)
  • Hodgkin, S. (author)
  • Marino, A. F. (author)
  • Lund, M. N. (author)
  • Pietrinferni, A. (author)
  • Asplund, M. (author)
  • Feltzing, SofiaLund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science(Swepub:lu)astr-sfe (author)
  • Flynn, C. (author)
  • Grundahl, F. (author)
  • Nissen, P. E. (author)
  • Schoenrich, R. (author)
  • Schlesinger, K. J. (author)
  • Wang, W. (author)
  • Astronomi - Genomgår omorganisationInstitutionen för astronomi och teoretisk fysik - Genomgår omorganisation (creator_code:org_t)

Related titles

  • In:Astrophysical Journal787:20004-637X

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