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Spectroscopy of Outlying H II Regions in Spiral Galaxies: Abundances and Radial Gradients

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 نشر من قبل Liese van Zee
 تاريخ النشر 1998
  مجال البحث فيزياء
والبحث باللغة English
 تأليف L. van Zee




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We present the results of low dispersion optical spectroscopy of 186 H II regions spanning a range of radius in 13 spiral galaxies. Abundances for several elements (oxygen, nitrogen, neon, sulfur, and argon) were determined for 185 of the H II regions. As expected, low metallicities were found for the outlying H II regions of these spiral galaxies. Radial abundance gradients were derived for the 11 primary galaxies; similar to results for other spiral galaxies, the derived abundance gradients are typically -0.04 to -0.07 dex/kpc.



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