An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
solar metallicity
  فلزیگی ِ خورشیدی  
felezigi-ye xoršidi
Fr.: métallicité solaire  

The proportion of the solar matter made up of → chemical elements heavier than → helium. It is denoted by Z, which represents
the sum of all elements heavier than → helium, in mass fraction. The most recent determination of the solar Z gives a value of 0.0134 (Asplund et al. 2009, ARAA 47, 481), corresponding to the present-day photospheric composition.

See also: → solar; → metallicity.