Narrow band photoelectric photometry of the Of X-ray binary HD 153919

Narrow band photography of NGC 5128

Narrow Band Photography of the Monoceros Loop

Narrow band photometry of Comet P/Halley

Narrow Band Photometry of the Calcium H and K lines for Stars in Open Clusters

Narrow band polarimetry of a sample of cool giants and supergiants

Narrow band survey for intragroup light in the Leo HI cloud. Constraints on the galaxy background contamination in imaging surveys for intracluster planetary nebulae

Narrow circumstellar emission lines in SN 1987A

Narrow CIV lambda 1549A Absorption Lines in Moderate-Redshift Quasars

Narrow components in the profiles of ultraviolet resonance lines - Evidence for a two-component stellar wind for O and B stars

Narrow Components within the Fe Kalpha Profile of NGC 3516: Evidence for the Importance of General Relativistic Effects?

Narrow double-peaked emission lines of SDSS J131642.90+175332.5: signature of a single or a binary AGN in a merger, jet-cloud interaction, or unusual narrow-line region geometry

Narrow emission line O VI planetary nebulae nuclei

Narrow emission line profiles in a 'quasar wind'

Narrow emission-line profiles of active galactic nuclei

Narrow features in the early spectrum of SN 1993J

Narrow frequency-windowed autocorrelations as a diagnostic of solar-like stars

Narrow Iron K$α$ Lines in Active Galactic Nuclei: Evolving Populations?

Narrow Line Seyfert 1 Galaxies and the Evolution of Galaxies & Active Galaxies

Narrow Line Seyfert 1 galaxies at hard X-rays