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• W2512590168 endingPage "683" @default.
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• W2512590168 abstract "We present new or improved oxygen abundances (O/H) for the nearby Lynx-Cancer void updated galaxy sample. They are obtained via the SAO 6-m telescope spectroscopy (25 objects), or derived from the Sloan Digital Sky Survey spectra (14 galaxies, of which for seven objects O/H values were unknown). For eight galaxies with detected [O iii] λ4363 line, O/H values are derived via the direct (Te) method. For the remaining objects, O/H was estimated via semi-empirical and empirical methods. For all accumulated O/H data for 81 galaxies of this void (with 40 of them derived via Te method), their relation ‘O/H versus MB’ is compared with that for similar late-type galaxies from denser environments (the Local Volume ‘reference sample’). We confirm our previous conclusion derived for a subsample of 48 objects: void galaxies show systematically reduced O/H for the same luminosity with respect to the reference sample, in average by 0.2 dex, or by a factor of ∼1.6. Moreover, we confirm the fraction of ∼20 per cent of strong outliers, with O/H of two to four times lower than the typical values for the ‘reference’ sample. The new data are consistent with the conclusion on the slower evolution of the main void galaxy population. We obtained Hα velocity for the faint optical counterpart of the most gas-rich (M(H i)/LB = 25) void object J0723+3624, confirming its connection with the respective H i blob. For similar extremely gas-rich dwarf J0706+3020, we give a tentative O/H ∼(O/H)⊙/45. In Appendix A, we present the results of calibration of semi-empirical method by Izotov & Thuan and of empirical calibrators by Pilyugin & Thuan and Yin et al. on the sample of ∼150 galaxies from the literature with O/H measured by Te method." @default.
• W2512590168 created "2016-09-16" @default.
• W2512590168 creator A5006186778 @default.
• W2512590168 creator A5020580417 @default.
• W2512590168 creator A5074530798 @default.
• W2512590168 date "2016-08-15" @default.
• W2512590168 modified "2023-09-24" @default.
• W2512590168 title "Study of galaxies in the Lynx-Cancer void – VII. New oxygen abundances" @default.
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• W2512590168 doi "https://doi.org/10.1093/mnras/stw2039" @default.
• W2512590168 hasPublicationYear "2016" @default.
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