Research Article
Are Wolf-Rayet Stars Able to Pollute the Interstellar Medium of Galaxies? Results from Integral Field Spectroscopy
Table 2
Total oxygen abundances and N/O derived for the six studied WR galaxies using different methods as described in the text. The confidence level from the Lilliefors test for those spaxels where all involved emission lines were measured is the value. Column (3) lists the mean value and standard deviation (sigma) from the Gaussian fit as long as value > 0.05; otherwise, the mean value and sigma of the data distribution are shown. Column (4) and (5) show the O/H, N/O, and their corresponding errors derived from the brightest spaxel and from the SDSS spectrum for each galaxy, respectively. The number in parenthesis indicates the method used to derive the chemical abundances: (1) from direct method with O II 3727 Å, (2) from direct method with O II 7319, 7330 Å, (3) from N2, (4) from O3N2, and (5) from N2O2.
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||