• DOI:10.1111/j.1365-2966.2012.21322.x
• Corpus ID: 118437910

Oxygen and nitrogen abundances of H ii regions in six spiral galaxies

@article{Gusev2012OxygenAN,
  title={Oxygen and nitrogen abundances of H ii regions in six spiral galaxies},
  author={A S Gusev and Leonid S. Pilyugin and Firouz Sakhibov and Sergey N. Dodonov and O. V. Ezhkova and Maria S. Khramtsova},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2012},
  volume={424},
  pages={1930-1940}
}

• A. Gusev, L. Pilyugin, +3 authors M. Khramtsova
• Published 17 May 2012
• Physics
• Monthly Notices of the Royal Astronomical Society

Spectroscopic observations of 63 Hii regions in six spiral galaxies (NGC 628, NGC 783, NGC 2336, NGC 6217, NGC 7331, and NGC 7678) were carried out with the 6-meter telescope (BTA) of Russian Special Astrophysical Observatory with the Spectral Camera attached to the focal reducer SCORPIO in the multislit mode with a dispersion of 2.1A/pixel and a spectral resolution of 10A. These observations were used to estimate the oxygen and nitrogen abundances and the electron temperatures in Hii regions through the recent variant of the strong line method (NS calibration). The parameters of the radial distribution (the extrapolated central intercept value and the gradient) of the oxyge n and nitrogen abundances in the disks of spiral galaxies NGC 628, NGC 783, NGC 2336, NGC 7331, and NGC 7678 have been determined. The abundances in the NGC 783, NGC 2336, NGC6217, and NGC 7678 are measured for the first time. Galaxies from our sample foll ow well the general trend in the luminosity ‐ central metallicity diagram for spiral and irr egular galaxies.