Spectroscopy of H II regions in the late-type spiral galaxy NGC 6946статья
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Дата последнего поиска статьи во внешних источниках: 19 ноября 2013 г.
Аннотация:We present the results of spectroscopy of 39 H II regions in the spiral galaxy NGC 6946. The spectral observations were carried out at the 6-m BTA telescope of the SAO RAS with the SCORPIO focal reducer in the multi-slit mode with the dispersion of 2.1 /px and spectral resolution of 10 . The absorption estimates for 39 H II regions were obtained. Using the "strong line" method (NS-calibration) we determined the electron temperature, and the abundances of oxygen and nitrogen for 30 H II regions. The radial gradients of O/H and N/H were constructed.