Gas emission spectrum in the Irr galaxy IC 10статья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Observations of the dwarf Irr galaxy IC 10 have been performed at the 6-m Special Astrophysical Observatory telescope with the SCORPIO focal reducer in the mode of a slit spectrograph. The ionized-gas emission spectrum in the region of intense current star formation has been investigated. The relative oxygen, N+, and S+ abundances in about twenty H II regions and the synchrotron superbubble have been estimated. The galaxy-averaged oxygen abundance is 12 + log(O/H) = 8.17 +/- 0.35 and the metallicity is Z = 0.18 +/- 0.14 Zsun. The metallicity found by comparing diagnostic diagrams with photoionization models is shown to be less reliable than its estimate based on strong oxygen lines.