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Spectrophotometry of HII Regions, Diffuse Ionized Gas and Supernova Remnants in M31: The Transition from Photo- to Shock-Ionization

ASTRONOMICAL JOURNAL, no. 6 (1999): 2775-2796

Cited: 67|Views28

Abstract

We present results of Kitt Peak National Observatory (KPNO) 4 m optical spectroscopy of discrete emission-line nebulae and regions of diffuse ionized gas (DIG) in M31. Long-slit spectra of 16 positions in the northeast half of M31 were obtained over a 5-15 kpc range in radial distance from the center of the galaxy with special attention t...More

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