A study of variability of the marginal Am star HD 176843 observed in the Kepler field

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dc.authoridUlas, Burak/0000-0002-4624-3847
dc.authoridUlusoy, Ceren/0000-0001-8868-5558
dc.contributor.authorUlusoy, C.
dc.contributor.authorStateva, I.
dc.contributor.authorUlas, B.
dc.contributor.authorAlicavus, F.
dc.contributor.authorIliev, I. Kh.
dc.contributor.authorNapetova, M.
dc.contributor.authorKaygan, E.
dc.date.accessioned2025-01-27T20:24:37Z
dc.date.available2025-01-27T20:24:37Z
dc.date.issued2019
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractWe present results of a study of variability of the marginal Am star HD 176843 observed in the Kepler field. Kepler photometry and ground-based spectroscopy are used to investigate the light variations of the star. HD 176843 is classified as a marginal Am star that shows delta Sct type pulsations. From an analysis of the Kepler time series, we find that the light curve of HD 176843 is dominated by three modes with frequencies f(1) = 0.1145, f(2) = 0.0162 and ,f(3) = 0.1078 d(-1). The amplitude of the radial velocity variations of about 10 km/s is much more than the radial velocity errors and allows us to conclude clear radial velocity variations. Using the radial velocity data and the adopted spectra, the orbital solution of HD 176843 is also obtained with an orbital period of 34.14 days. However, the available photometric data show no significant evidence for any possible motion in the binary system.
dc.description.sponsorshipUniversity of South Africa (UNISA); South African National Research Foundation (NRF) [87635]; NASA Science Mission directorate; [DN 08-1/2016]; [DN 18/13-12.12.2017]; [DFNP-103/11.05.2016]
dc.description.sponsorshipThe authors acknowledge the whole Kepler team for providing the unprecedented data sets that make these results possible. CU acknowledges financial support from the University of South Africa (UNISA) and the South African National Research Foundation (NRF), grant no. 87635. This paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the NASA Science Mission directorate. IS, II, MN acknowledge for the partial support of the projects DN 08-1/2016 and DN 18/13-12.12.2017. MN acknowledges for the partial support of the project DFNP-103/11.05.2016.
dc.identifier.doi10.1016/j.newast.2019.03.005
dc.identifier.endpage38
dc.identifier.issn1384-1076
dc.identifier.issn1384-1092
dc.identifier.scopus2-s2.0-85063336785
dc.identifier.scopusqualityQ2
dc.identifier.startpage33
dc.identifier.urihttps://doi.org/10.1016/j.newast.2019.03.005
dc.identifier.urihttps://hdl.handle.net/20.500.12428/22293
dc.identifier.volume71
dc.identifier.wosWOS:000468711600004
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Bv
dc.relation.ispartofNew Astronomy
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectStars
dc.subjectVariables
dc.subjectOscillations (including pulsations) stars
dc.subjectIndividual
dc.titleA study of variability of the marginal Am star HD 176843 observed in the Kepler field
dc.typeArticle

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