英和和英

発音

• 韻: -ɒsɪti

名詞

luminosity (countable and uncountable, plural luminosities)

1. (uncountable) the state of being luminous, or a luminous object; brilliance or radiance
   • 1994, Simcha Paull Raphael, Jewish Views of the Afterlife, page 360:

     They reported encountering a luminosity of great intensity and loving angelic beings.

2. (physics) the ratio of luminous flux to radiant flux at the same wavelength; the luminosity factor
3. (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:

     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.

派生語

参照

Further reading

• luminosity on Wikipedia.Wikipedia