Study of galactic light, extragalactic light, and galactic structure using pioneer 10 observations of background starlight
Thesis/Dissertation
·
OSTI ID:5604762
An observational and theoretical study of the diffuse astronomical background sky brightness (background starlight) is carried out. The brightness is determined over 95% of the sky using Pioneer 10 photometric measurements in sky regions where the zodiacal light is negligible (heliocentric distances approx. greater than or equal to 3. A.U.). Brightness levels are presented at blue (3950 to 4850 A) and red (5900 to 6800 A) wavelengths. The B-R color index distribution is established over the celestial sphere. Pioneer 10 results are compared with previous star count and ground based photometric studies to separate background starlight into its constituent parts: integrated starlight, diffuse galactic light (DGL), and cosmic light. Significant errors are found in published star count results at low galactic latitudes. The galactic latitude (b'') and longitude (1'') dependences of integrated starlight and the variation of DGL with b'' are determined. An upper limit of 3.9 S/sub 10/(V)/sub G2V/ at the 90% confidence level is deduced for the cosmic light brightness at blue wavelengths near the galactic poles. The integrated light from discrete galaxies adequately explains this component of the background starlight.
- Research Organization:
- State Univ. of New York, Stony Brook (USA)
- OSTI ID:
- 5604762
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
BRIGHTNESS
COMPUTERIZED SIMULATION
CONFIGURATION
COSMIC DUST
DISTRIBUTION
DUSTS
ELECTROMAGNETIC RADIATION
GALAXIES
GEOGRAPHICAL VARIATIONS
LATITUDE EFFECT
LIMITING VALUES
MILKY WAY
OPTICAL PROPERTIES
PHOTOMETRY
PHYSICAL PROPERTIES
PIONEER SPACE PROBES
RADIATIONS
SIMULATION
SPACE VEHICLES
SPIRAL CONFIGURATION
VARIATIONS
VEHICLES
VISIBLE RADIATION
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
BRIGHTNESS
COMPUTERIZED SIMULATION
CONFIGURATION
COSMIC DUST
DISTRIBUTION
DUSTS
ELECTROMAGNETIC RADIATION
GALAXIES
GEOGRAPHICAL VARIATIONS
LATITUDE EFFECT
LIMITING VALUES
MILKY WAY
OPTICAL PROPERTIES
PHOTOMETRY
PHYSICAL PROPERTIES
PIONEER SPACE PROBES
RADIATIONS
SIMULATION
SPACE VEHICLES
SPIRAL CONFIGURATION
VARIATIONS
VEHICLES
VISIBLE RADIATION