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Galactic latitude is positive towards the north galactic pole, with a plane passing through the Sun and parallel to the galactic equator being 0°, whilst the poles are ±90°. [3] Based on this definition, the galactic poles and equator can be found from spherical trigonometry and can be precessed to other epochs; see the table.
Observations for the survey began in 2003 and are almost complete. The survey is being complemented by a sister survey of the southern Galactic Plane, VPHAS+. [2] Once these two surveys are completed the data are expected to provide a significant leap in our knowledge of the extreme phases of stellar evolution. The goals of the survey include:
The galactic coordinate system uses the approximate plane of the Milky Way Galaxy as its fundamental plane. The Solar System is still the center of the coordinate system, and the zero point is defined as the direction towards the Galactic Center. Galactic latitude resembles the elevation above the galactic plane and galactic longitude ...
The galactic plane is the plane on which the majority of a disk-shaped galaxy's mass lies. The directions perpendicular to the galactic plane point to the galactic poles . In actual usage, the terms galactic plane and galactic poles usually refer specifically to the plane and poles of the Milky Way , in which Planet Earth is located.
The galactic plane is inclined by approximately 46° to the line of sight from the Earth. [6] The ring structure of the galaxy is a region of star formation. It is offset from the galactic center and displays non-circular motion. [15] There is a compact radio source positioned approximately 6.2 kly from the nucleus of NGC 4725. Since there is ...
M107 is close to the galactic plane and about 20,900 light-years from Earth [3] and 9,800 ly (3,000 pc) from the Galactic Center. [10] Its orbit is partly as far out as the galactic halo, as is between 9,200–12,400 ly (2,820–3,790 pc) from the Galactic Center, the lower figure, the "perigalactic distance" sees it enter and leave the galactic bar.
A polar-ring galaxy is a type of galaxy with an outer ring of gas and stars that rotates over the poles of the galaxy. [1] These polar rings are thought to form when two galaxies gravitationally interact with each other. One possibility is that a material is tidally stripped from a passing galaxy to produce the polar ring. [2]
In astronomy Westerhout 49 also known as W49, is a strong galactic thermal radio source characteristic of an HII region. It was discovered by Gart Westerhout in 1958. Its distance is estimated to be about 11.1 kpcs or 36,000 light years. [1] and it lies in the galactic plane about the same distance from the Galactic Center as does the Sun
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