[Fe/H] derived from the light curves of RR Lyrae stars in the Galactic halo

[Fe/H] relations for c-type RR Lyrae Variables based upon Fourier Coefficients

[FeII] as a tracer of Supernova Rate in Near-by Starburst Galaxies

[FeII] as a tracer supernova rate

[Ne II] 12.8 Micron Images of Four Galactic Ultracompact H II Regions: Ionized Neon Abundance as a Tracer of the Ionizing Stars

[Ne II] Observations of Gas Motions in Compact and Ultracompact H II Regions

[Ne V] 14.3/24.3 micron Flux Ratio as a Test of Collision Strengths

[Ne V] Emission in Optically Classified Starbursts

[Ne V] Fabry-Pérot observations of the Cygnus Loop

[Ne V] Imaging of N49 in the Large Magellanic Cloud

[NeII] emission line profiles from photoevaporative disc winds

[O III] emission line in narrow-line Seyfert 1 galaxies

[O III] Equivalent Width and Orientation Effects in Quasars

[O III]/[N II] as an Abundance Indicator at High Redshift

[O II] as a tracer of current star formation

[O II] Emission in Quasar Host Galaxies: Evidence for a Suppressed Star Formation Efficiency

[O II] line ratios

[O I] 63 micron Emission from High and Low Luminosity AGN Galaxies

[O I] 6300 A Emission from Disks Around Herbig Ae/Be Stars

[O I] 6300A emission in Herbig Ae/Be systems: signature of Keplerian rotation