N-spheres in general relativity: regular black holes without apparent horizons, static wormholes with event horizons and gravastars with a tube-like core

N-type carbon stars and the 3-alpha process.

N-Vulpeculae 1984 Behaviour Near Maximum

N-z Relation and CMB Anisotropies in the Universe with an Oscillating Scalar Field Having a Null Field State

N. B. Slater, 1912 - 1973 January 31.

N. D. Watkins, died 1977 November 2.

N. G. C. 7662, note on its period of variation

N. G. C. 7662, the variability of the nucleaus of

N. S. and Ar Abundances in Extragalactic H II Regions

N/O in spiral discs: a new algorithm for abundance determinations

N/O in Spiral Disks: an Algorithm for Abundance Determinations

N/O-trends in Late-Type Galaxies: AGB-stars, IMFs, Abundance Gradients and the Origin of Nitrogen

N120 in the LMC - A sample of nebulae of different types

N157B: X-ray evidence for a Crab-like supernova remnant.

N19: an M-type symbiotic star in the Large Magellanic Cloud

N2D+ abundance in high mass star forming regions.

N2H(+) in Orion - Chemical clues to the dynamics of the quiescent gas

N2H(+) in the Orion ambient ridge - Cloud clumping versus rotation

N2H+ and N2D+ in interstellar molecular clouds. II- Observations

N2H+ depletion in the massive protostellar cluster AFGL 5142