A surface brightness study of the reflection nebula NGC 7023

Details A surface brightness study of the reflection nebula NGC 7023 A surface brightness study of the reflection nebula NGC 7023

Jan 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980aj.....85...22w&link_type=abstract

Astronomical Journal, vol. 85, Jan. 1980, p. 22-28.

Astronomy and Astrophysics

Astronomy

22

Brightness, Nebulae, Optical Measurement, Photoelectric Effect, Surface Properties, Color, Cosmic Dust, Electrophotometry, H Ii Regions, Light Scattering, Optical Reflection

Scientific paper

New photoelectric surface brightness measurements of NGC 7023 at 3500, 4100, 4700, and 5500 A in 38 positions are reported. The systematic behavior in the changes of surface brightness and color with position has been examined, and conclusions are drawn concerning the nebular density, the geometry of the star's location, and the variation of the dust scattering properties with wavelength. Indications are found for the existence of a small H II region surrounding the illuminating star HD 200775.

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