Spectroscopic survey of ? Doradus stars - I. Comprehensive atmospheric parameters and abundance analysis of ? Doradus stars

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dc.contributor.authorAlicavus, F. Kahraman
dc.contributor.authorNiemczura, E.
dc.contributor.authorDe Cat, P.
dc.contributor.authorSoydugan, Esin
dc.contributor.authorKolaczkowski, Z.
dc.contributor.authorOstrowski, J.
dc.contributor.authorTelting, J. H.
dc.date.accessioned2025-01-27T20:14:46Z
dc.date.available2025-01-27T20:14:46Z
dc.date.issued2016
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractWe present a spectroscopic survey of known and candidate gamma Doradus stars. The high-resolution, high signal-to-noise spectra of 52 objects were collected by five different spectrographs. The spectral classification, atmospheric parameters (T-eff, log g, xi), vsin i and chemical composition of the stars were derived. The stellar spectral and luminosity classes were found between G0-A7 and IV-V, respectively. The initial values for T-eff and log g were determined from the photometric indices and spectral energy distribution. Those parameters were improved by the analysis of hydrogen lines. The final values of T-eff, log g and xi were derived from the iron lines analysis. The T-eff values were found between 6000 K and 7900 K, while log g values range from 3.8 to 4.5 dex. Chemical abundances and vsin i values were derived by the spectrum synthesis method. The vsin i values were found between 5 and 240 km s(-1). The chemical abundance pattern of gamma Doradus stars were compared with the pattern of non-pulsating stars. It turned out that there is no significant difference in abundance patterns between these two groups. Additionally, the relations between the atmospheric parameters and the pulsation quantities were checked. A strong correlation between the vsin i and the pulsation periods of gamma Doradus variables was obtained. The accurate positions of the analysed stars in the Hertzsprung-Russell diagram have been shown. Most of our objects are located inside or close to the blue edge of the theoretical instability strip of gamma Doradus.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [2214-A, 2211-C]; NCN [2014/13/B/ST9/00902]; Wroclaw Centre for Networking and Supercomputing [214]; European project SpaceInn within the European SPACE program FP7-SPACE [312844]; Junta de Andalucia (Spanish) local government under project Contribucian Andaluza al proyecto espacial CoRoTs [P12-TIC-2469]; HARPS spectrograph [LP178.D-0361, LP182.D-0356, LP185.D-0056]; FP7 project SpaceInn: Exploitation of Space Data for Innovative Helio and Asteroseismology and from PRIN-INAF Galactic Archaelogy
dc.description.sponsorshipThe authors would like to thank the reviewer for useful comments and suggestions that helped to improve the publication. This work has been partly supported by the Scientific and Technological Research Council of Turkey (TUBITAK) grant numbers 2214-A and 2211-C. This article is a part of the PhD thesis of FKA. FKA wishes to express gratitude to professor Dr J. A. Guzik for all assistance given at the start of this project. EN acknowledges support from the NCN grant no. 2014/13/B/ST9/00902. The calculations have been carried out in Wroclaw Centre for Networking and Supercomputing (http://www.wcss.pl), grant no. 214. We thank professor Dr R. O. Gray and Dr B. Smalley for their helpful comments. We are grateful to Dr D. Shulyak for putting the code for calculating SEDs at our disposal. We thank to Dr G. Catanzaro for putting the code for Balmer lines analysis at our disposal. 'Ministerio de Economia y Competitividad' (MINECO) and FEDER funds under the 'Ramon y Cajal' sub program, also acknowledges support by the European project SpaceInn (ref. 312844) within the European SPACE program FP7-SPACE-2011-1, and from Junta de Andalucia (Spanish) local government under project Contribucian Andaluza al proyecto espacial CoRoTs with reference P12-TIC-2469. This work is partially based on observations collected at La Silla Observatory, ESO (Chile) with the FEROS and HARPS spectrographs under programmes LP178.D-0361, LP182.D-0356, and LP185.D-0056. EP and MR acknowledge financial support from the FP7 project SpaceInn: Exploitation of Space Data for Innovative Helio and Asteroseismology and from PRIN-INAF 2014 Galactic Archaelogy. This research has made use of the SIMBAD data base, operated at CDS, Strasbourg, France.
dc.identifier.doi10.1093/mnras/stw393
dc.identifier.endpage2322
dc.identifier.issn0035-8711
dc.identifier.issn1365-2966
dc.identifier.issue3
dc.identifier.scopus2-s2.0-84964744513
dc.identifier.scopusqualityQ1
dc.identifier.startpage2307
dc.identifier.urihttps://doi.org/10.1093/mnras/stw393
dc.identifier.urihttps://hdl.handle.net/20.500.12428/21196
dc.identifier.volume458
dc.identifier.wosWOS:000375799000004
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherOxford Univ Press
dc.relation.ispartofMonthly Notices of The Royal Astronomical Society
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectstars: abundances
dc.subjectstars: chemically peculiar
dc.subjectstars: general
dc.subjectstars: rotation
dc.titleSpectroscopic survey of ? Doradus stars - I. Comprehensive atmospheric parameters and abundance analysis of ? Doradus stars
dc.typeArticle

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