词条 | Supergalactic coordinate system |
释义 |
By convention, supergalactic latitude and supergalactic longitude are usually denoted by SGB and SGL, respectively, by analogy to {{math|b}} and {{math|l}} conventionally used for galactic coordinates. The zero point for supergalactic longitude is defined by the intersection of this plane with the galactic plane. Definition
So the transformation from a triple of Cartesian supergalactic coordinates to a triple of galactic coordinates is The left column in this matrix is the image of the origin of the supergalactic system in the galactic system, the right column in this matrix is the image of the north pole of the supergalactic coordinates in the galactic system, and the middle column is the cross product (to complete the right handed coordinate system). See also
References1. ^{{Cite news|url=http://www.astronomy.com/news/2016/10/vera-rubin|title=How Vera Rubin Discovered Dark Matter|last=Scoles|first=Sarah|date=4 October 2016|work=Astronomy.com|access-date=2017-10-23|archive-url=|archive-date=|dead-url=}} External links
|doi=10.1046/j.1365-8711.2000.03145.x | title=The supergalactic plane revisited with the Optical Redshift Survey|arxiv=astro-ph/9809343}}{{Celestial coordinate systems}}{{Galaxy}} 2 : Celestial coordinate system|Extragalactic astronomy |
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