Spectroscopy of planetary nebulae in M 33 ⋆

Abstract

Spectroscopic observations of 48 emission-line objects of M 33 have been obtained with the multi-object, wide field, fibre spectrograph AF2/WYFFOS at the 4.2m WHT telescope (La Palma, Spain). Line intensities and logarithmic extinction, cβ, are presented for 42 objects. Their location in the Sabbadin & D’Odorico diagnostic diagram (Hα/[S ii] vs Hα/[N ii… (More)

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