Poster abstract details
Individual extinctions and metallicity limits from deep PN spectra in M 60 and M 82
Abstract
Using the Subaru telescope and its FOCAS spectrograph in multi-object mode, we have obtained deep spectra of a selection of bright PNs in two galaxies, the Virgo elliptical M 60 and the starburst spiral M 82. We will present individual reddenings from the Balmer decrement, and limits on metallicities from the ratio of [O III] 4959, 5007 to Hbeta, as done in Mendez et al. 2005, ApJ 627, 767. We will explore consequences for metallicity and PNLF distance determinations.