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The abundance and chemical evolution of nitrogen in spiral galaxies.
(1998)
The character of nitrogen processing in spiral galaxies is studied in this dissertation. Of particular interest are questions of how the (N/O) ratio changes over time as a result of perturbations of environmental parameters, ...
Prospecting for elements: Galactic halo planetary nebulae abundances and Virgo spiral galaxy color profiles.
(1998)
Near-infrared Virgo cluster spiral colors. Near-infrared (NIR) surface photometry in J (1.2$\mu$m), H (1.6$\mu$m) and K (2.2$\mu$m) have been obtained for a sample of Virgo cluster spirals; NGC4321, NGC4303, NGC4571, ...
Multiwavelength analyses of a small sample of nearby spiral galaxies: The radio and X-ray connection.
(2006)
Included is a preliminary report on radio analyses of M101 and NGC 3184. The deep radio observations of M101 yield 28 compact radio sources. A shorter set of observations for NGC 3184 yield the detection of 10 radio sources. ...