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dc.contributor.authorKaraali, Salih
dc.contributor.authorBuser, Roland
dc.contributor.authorCabrera-Lavers, A.
dc.contributor.authorAk, Serap
dc.contributor.authorBilir, Selçuk
dc.date.accessioned2021-03-06T11:32:55Z
dc.date.available2021-03-06T11:32:55Z
dc.date.issued2007
dc.identifier.citationAk S., Bilir S., Karaali S., Buser R., Cabrera-Lavers A., "The metallicity distributions in high-latitudes with SDSS", NEW ASTRONOMY, cilt.12, ss.605-612, 2007
dc.identifier.issn1384-1076
dc.identifier.othervv_1032021
dc.identifier.otherav_ef920a39-027a-4395-a278-efb03dd3476c
dc.identifier.urihttp://hdl.handle.net/20.500.12627/157237
dc.identifier.urihttps://doi.org/10.1016/j.newast.2007.04.005
dc.description.abstractWe present metallicities and their variations with different parameters for 36 high-latitude fields covering Galactic longitudes < I <= 360 degrees. The metallicities for relatively short vertical distances (z < 2.5 kpc) show systematic fluctuations with Galactic longitude, similar to those of the thick-disc scaleheight, which may be interpreted as indicating a common origin, viz., the flare effect : I the disc (Bilir et al., 2007, MNRAS). This suggestion is supported by the metallicity variations which we find as functions of radial stance. The metallicity variation at larger vertical distances (6.5 < z <= 9.5 kpc) is small but monotonic. Three different vertical metallicity graents could be detected: d[M vertical bar H]dz = - 0.22( +/- 0.03), d[M vertical bar H]vertical bar dz = -0.38( +/- 0.06), and d[M vertical bar H]dz = -0.08(+/- 0.07) dex kpc(-1) for the,tervals z < 3, 3 <=, z < 5, and 5 <=, z < 10 kpc, respectively. Since our data cover the whole Galactic longitude interval, the resulting metlicity gradients can be interpreted as properties of the larger-scale Galaxy. The first gradient confirms the dissipational formation of the sc at short z-distances. The steeper gradient corresponds to the transition region between different population components of the Galcy, and finally, the lowest value provides an adequate description of the inner-halo metallicity gradient. 2007 Elsevier B.V. All rights reserved.
dc.language.isoeng
dc.subjectUzay bilimi
dc.subjectTemel Bilimler (SCI)
dc.subjectFizik
dc.subjectAstronomi ve Astrofizik
dc.subjectTemel Bilimler
dc.subjectASTRONOMİ VE ASTROFİZİK
dc.titleThe metallicity distributions in high-latitudes with SDSS
dc.typeMakale
dc.relation.journalNEW ASTRONOMY
dc.contributor.department, ,
dc.identifier.volume12
dc.identifier.issue8
dc.identifier.startpage605
dc.identifier.endpage612
dc.contributor.firstauthorID55245


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