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Planetary Nebulae in Face-On Spiral Galaxies. II. Planetary Nebula Spectroscopy

  • Authors: Kimberly A. Herrmann and Robin Ciardullo

HERRMANN & CIARDULLO 2009 The Astrophysical Journal 703 894.

  • Provider: AAS Journals

Caption: Figure 1.

Sample spectra from each of our four instrumental configurations in the wavelength range between 4850 and 5050 Å. Included are three spectra from the Blanco telescope, illustrating the relationship between data quality and velocity uncertainty (Δ v). Note that virtually all velocity information is contained in the [O iii] λ5007; the flux in [O iii] λ4959 is ~3 times weaker, and Hβ is barely visible.

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