An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 22 Search : Hubble
Hubble-Sandage variable
  ورتنده‌ی ِ هابل-سندیج   
vartande-ye Hubble-Sandage

Fr.: variable de Hubble-Sandage   

A type of highly luminous → blue supergiant star with variable light, first discovered in the M31 and M33 galaxies; also called → S Doradus stars. They are now believed to be part of the class of → Luminous Blue Variable stars.

Hubble; Allan Rex Sandage (1926-2010), American cosmologist.

normalized Hubble parameter
  پارامون ِ هابل ِ هنجاروریده   
pârâmun-e Hubble-e hanjârvaridé

Fr.: paramètre Hubble normalisé   

A dimensionless parameter expressed by h(z) = H(z)/H0, where H(z) is the → Hubble parameter at → redshift z and H0 is the → Hubble constant.

normalized; → Hubble; → parameter.


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