NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The surface brightness of reflection nebulaeHubble's equation relating the maximum apparent angular extent of a reflection nebula to the apparent magnitude of the illuminating star has been reconsidered under a set of less restrictive assumptions. A computational technique is developed which permits the use of fits to observed m, log a values to determine the albedo of the particles composing reflection nebulae, providing only that one assumes a particular phase function. Despite the fact that all orders of scattering, anisotropic phase functions, and illumination by the general stellar field are considered, the albedo which is determined for reflection nebulae by this method appears larger than that for interstellar particles in general. The possibility that the higher surface brightness might be due to a continuous fluorescence mechanism is considered both theoretically and observationally.
Document ID
19740013317
Acquisition Source
Legacy CDMS
Document Type
Thesis/Dissertation
Authors
Rush, W. F.
(Toledo Univ. OH, United States)
Date Acquired
September 3, 2013
Publication Date
January 10, 1974
Subject Category
Space Sciences
Report/Patent Number
NASA-CR-138072
Accession Number
74N21430
Funding Number(s)
CONTRACT_GRANT: NGR-36-010-016
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
No Preview Available