A note on the oxygen gradient in NGC 628

Details A note on the oxygen gradient in NGC 628 A note on the oxygen gradient in NGC 628

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pasp...95..986t&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 95, Dec. 1983, p. 986-988. Research supported by the Ab

Astronomy and Astrophysics

Astronomy

8

Abundance, Astronomical Spectroscopy, Interstellar Gas, Oxygen, Spiral Galaxies, Gradients, H Ii Regions, Oxygen Spectra, Spectrophotometry

Scientific paper

The Kitt Peak 2.1-m telescope and Intensified Image Dissector Scanner have been used to gather spectrophotometric data in the 3600-5200 A spectral region for five H II regions in the spiral galaxy NGC 628. The Pagel et al (1979) technique was then applied to determine the relative number abundances of O to H in each of the H II regions. An examination of the abundance values obtained as a function of the radial coordinate yields an O gradient of -0.05 + or - 0.03 dex/kpc.

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