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Gas Emission Spectrum in the Irr Galaxy IC 10 | T.A. Lozinskaya
; O.V. Egorov
; A.V. Moiseev
; D.V. Bizyaev
; | Date: |
11 Oct 2009 | Abstract: | Spectroscopic long-slit observations of the dwarf Irr galaxy IC 10 were
conducted at the 6-m Special Astrophysical Observatory telescope with the
SCORPIO focal reducer. The ionized-gas emission spectra in the regions of
intense current star formation were obtained for a large number of regions in
IC 10. The relative abundances of oxygen, N+, and S+ in about twenty HII
regions and in the synchrotron superbubble were estimated. We found that the
galaxy-averaged oxygen abundance is 12+log(O/H} = 8.17 +- 0.35 and the
metallicity is Z=(0.18 +- 0.14) Z_sun. Our abundances estimated from the strong
emission lines are found to be more reliable than those found by the comparison
of diagnostic diagrams with photoionization models. | Source: | arXiv, 0910.1919 | Services: | Forum | Review | PDF | Favorites |
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