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

1) General: Pertaining to, established by, or conforming to a canon, i.e. a law or a general rule (especially in ecclesiastical matters).
2) Math.: Relating to the simplest or standard form of a general function, equation, rule, etc.

M.M. canonicalis, from canonic(us), from L. canon, from Gk. kanon "a straight rod, a measuring rod, rule " + alis, → -al.

Hanjârvâr, from hanjâr "a mason's rule, any string or instrument used by builders in laying stones straight; rule, law, way, custom; a norm" + -vâr suffix meaning "having, endowed with; like, in the manner of."

A periodic change in one of the components of the orbit of a celestial object.

→ canonical; → change.

Any set of generalized coordinates of a system together with their → conjugate momenta.

→ canonical; → coordinates.

The highest correlation between linear functions of two data sets when specific restrictions are imposed upon them.

→ canonical; → correlation.

The most general form of an equation.

→ canonical; → equation.

The simplest expression of an equation, statement, or rule.

→ canonical; → form.

A two-component stellar → initial mass function with → slopes of 1.3 and 2.3 for massive and low mass stars, respectively. Also called universal IMF.

→ canonical; → IMF.

A model for the formation of the Moon according to which the → Moon results from a giant impact. A Mars-sized body (often referred to as → Theia) obliquely collided with the proto-Earth at the mutual escapee velocity. This specific giant impact is often used to represent all giant impacts. A recent advanced version of the canonical model is called → giant impact hypothesis.

→ canonical; → model.

Same as → conjugate momentum.

→ canonical; → momentum.

A physical upper mass limit near 150 Msun assumed for the stellar → initial mass function (Kroupa et al. 2012, arXiv:1112.3340).

→ canonical; → upper; → limit.

A generalized coordinate and its → conjugate momentum.

Canonically, adverb from → canonical; → conjugate; → variable.

The probability distribution of the various possible states of a certain → quasi-closed subsystem.

→ Gibbs free energy; → canonical; → distribution.

A star whose mass exceeds the → canonical upper limit of the stellar → initial mass function (Kroupa et al. 2012, arXiv:1112.3340).

→ super-; → canonical; → star.