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Surface brightness

In astronomy, surface brightness (SB) quantifies the apparent brightness or flux density per unit angular area of a spatially extended object such as a galaxy or nebula, or of the night sky background. An object's surface brightness depends on its surface luminosity density, i.e., its luminosity emitted per unit surface area. In visible and infrared…

Measurement, General description & Overview

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Overview

General description

Calculating surface brightness

Relationship to physical units

Examples

General references

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Map overview Semantic statistics

Surface brightness

Nodes49
Edges48
Triples29
Avg. degree1.96
Density0.040816
Components1

How this topic connects Entity context

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Surface brightness

Top relations

related to General description · 10
Surface brightness → Alternatively, Apparent, Doradus, However, In, It, Ricco's, The, Therefore, What
related to Calculating surface brightness · 5
Surface brightness → Because, For, In, Instead, Surface
related to Examples · 3
Surface brightness → Mag/arcsec2, Orion Nebula, The
related to Relationship to physical units · 3
Surface brightness → Sun, Surface, The
is a · 1
Surface brightness → better indicator if the object is large

Important terminology Word statistics

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Important terminology

surface brightness magnitude area per galaxy object square astronomy star total 10 apparent nebula luminosity arcsecond light mag extended background

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Surface brightnessis abetter indicator if the object is large0.90text
a galaxy or nebulainstance ofquantifies the apparent brightness or flux density per unit angular area of a spatially extended object0.80text
or of the night sky backgroundinstance ofquantifies the apparent brightness or flux density per unit angular area of a spatially extended object0.80text
a nebulainstance ofGeneral descriptionThe total magnitude is a measure of the brightness of an extended object0.80text
clusterinstance ofGeneral descriptionThe total magnitude is a measure of the brightness of an extended object0.80text
galaxy or cometinstance ofGeneral descriptionThe total magnitude is a measure of the brightness of an extended object0.80text
nebulae or galaxiesinstance ofFor extended objects0.80text
this allows the estimation of spatial distance from surface brightness by means of the distance modulus or luminosity distanceinstance ofFor extended objects0.80text
Surface brightnessrelated to Calculating surface brightnessSurface0.60section
Surface brightnessrelated to Calculating surface brightnessBecause0.60section
Surface brightnessrelated to Calculating surface brightnessInstead0.60section
Surface brightnessrelated to Calculating surface brightnessFor0.60section

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