Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.234..977r&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 234, Oct. 15, 1988, p. 977-991. NSERC-supported researc
Astronomy and Astrophysics
Astronomy
21
Astronomical Spectroscopy, Barred Galaxies, H Ii Regions, Abundance, Forbidden Transitions, H Beta Line, Spectrum Analysis
Scientific paper
Imaging spectroscopy at low spectral resolution of the northwestern arm of the barred spiral galaxy NGC 13P5 has been obtained with the RGO spectrograph using the ASPECT system of the Anglo-Australian Telescope. An area of 120×21 arcmin2 was mapped spectroscopically. The line ratios used as abundance indicators vary very little along the northwestern spiral arm; this is consistent with earlier suggestions that a bar may act to homogenize abundances in galaxies. The correlation between the abundance indicators [O III]/[N II] and ([O II]+[O III])/Hβ is much tighter than in any of the three galaxies (NGC 1566, 2997 and 5253) that the authors have mapped so far.
ROY Jean-Rene
Walsh Jeremy R.
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