luminosity
English
[edit]Etymology
[edit]Borrowed from French luminosité, equivalent to luminous + -ity.
Pronunciation
[edit]Noun
[edit]luminosity (countable and uncountable, plural luminosities)
- (uncountable) the state of being luminous, or a luminous object; brilliance or radiance
- (physics) the ratio of luminous flux to radiant flux at the same wavelength; the luminosity factor
- (astronomy) The rate at which a star radiates energy in all directions.
- 2012, O. Havnes, B. R. Pettersen, J. H. M. M. Schmitt, Activity in Cool Star Envelopes: Proceedings, page 56:
- We recognize the same pattern as in the left panel, with dM stars being much less frequent flarers than dMe stars of similar luminosity.
- 2015, D. J. Armstrong, C. E. Pugh, A.-M. Broomhall, D. J. A. Brown, M. N. Lund, H. P. Osborn, D. L. Pollacco, “The Host Stars of Keplers Habitable Exoplanets: Superflares, Rotation and Activity”, in arXiv[1]:
- We derive rotation periods, photometric activity indices, flaring energies, mass loss rates, gyrochronological ages, X-ray luminosities and consider implications for the planetary magnetospheres and habitability.
Derived terms
[edit]Translations
[edit]state of being luminous
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ratio of luminous to radiant flux
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rate at which a star radiates energy
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References
[edit]
luminosity on Wikipedia.Wikipedia
Categories:
- English terms borrowed from French
- English terms derived from French
- English terms suffixed with -ity
- English terms with audio pronunciation
- Rhymes:English/ɒsɪti
- Rhymes:English/ɒsɪti/5 syllables
- English lemmas
- English nouns
- English uncountable nouns
- English countable nouns
- en:Physics
- en:Astronomy
- English terms with quotations
- en:Light