Dark Nebulae, Globules, and ProtostarsBeverly T. Lynds |
Contents
Star Counts and Galactic Structure | 1 |
A Dark Absorbing Cloud in Carina | 21 |
Note on Accurate Color Excess | 27 |
Copyright | |
9 other sections not shown
Common terms and phrases
accretion ammonia appear associated Astr astronomers Astrophys atoms average Barnard 227 Bart Bok Bok's bright Cepheus Cheung circumstellar clusters collapse collisions color excess continuum cool cosmic dark nebulae dense diameter distance distribution dust clouds Elvius emission lines extinction curve field flare stars formaldehyde galactic center galaxy globules graphite gravitational Greenstein HII regions hydrogen image tube indicated infrared sources infrared stars interstellar absorption interstellar dust interstellar gas interstellar medium kiloparsec km/sec longitude luminosity magnetic magnitude mass microns molecular molecules nebulosity OB stars objects obscured Observatory observed Ophiuchi optical depth Orion Nebula parsecs particles percent polarization pressure protostars radiation radio ratio reddening reflection nebulae scattering Sgr B2 silicate solar space density spectral type spiral arm square degree star counts star formation stellar studied Tauri stars techniques temperature tion ultraviolet Varsavsky velocity wavelength