Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8141391 | New Astronomy | 2018 | 4 Pages |
Abstract
A recent study indicated that 39 red giant stars showing solar-like oscillations were discovered in the field of Kepleropen cluster NGCÂ 6819. The study was based on photometric distance estimates of 27 stars out of the 39. Using photometric method alone may not be adequate to confirm the membership of these stars. The stars were not previously known in literature to belong to the open cluster NGCÂ 6819. In this study, Kepler data was used to study the membership of the 27 stars. A plot of apparent magnitude as a function of the large frequency separation, supplemented with the proper motion and radial velocity values from literature revealed KICÂ 5112840 to lie on the same plane with the well known members of the cluster. Echelle diagram was constructed, and the median gravity-mode period spacings (ÎP) calculated for KICÂ 5112840. A value of ÎP = 66.3Â s was obtained, thus placing the red giant star KICÂ 5112840 on the Red Giant Branch stage of evolution. Our evolutionary status result using the approach in this paper is in agreement with what is in the available literature.
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Physical Sciences and Engineering
Physics and Astronomy
Astronomy and Astrophysics
Authors
E. Komucyeya, O.P. Abedigamba, E. Jurua, S.K. Anguma,