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Figure 1:
Finding charts (typically
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Figure 3:
GMOS spectroscopy of [MAC92] 17 from Massey et al. (1992),
in the vicinity of He II ![]() |
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Figure 4: Flux calibrated (erg cm-2 s-1 Å-1) optical spectroscopy of WN stars in IC 10 observed with Gemini GMOS. |
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Figure 5: Flux calibrated (erg cm-2 s-1 Å-1) optical spectroscopy of WN/C and WC stars in IC 10 observed with Gemini GMOS. |
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Figure 6: Optical spectroscopy of WC stars in IC 10 observed with CFHT MOS. |
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Figure 7:
Comparison between the emission C IV ![]() |
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Figure 8: WC/WN ratio for Local Group and Sculptor Group spiral (squares) and irregular galaxies (circles) versus oxygen content. Individual data points are taken from Massey & Johnson (1998), Schild et al. (2003). Recent evidence, based on model atmosphere calculations rather than H II region analyses, suggests a lower metallicity for M31 (Trundle et al. 2002). The ratio for IC 10 is shown based on the Massey & Johnson (1998) and present spectroscopic results (filled circles), plus a re-assessment of recent narrow-band imaging of Massey & Holmes (2002, open circle). |
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Figure 2:
Finding charts (
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