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File:NGC1898 - HST - Potw1840a.tiff

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摘要

描述
English: Celestial fairy lights

This glittering ball of stars is the globular cluster NGC 1898, which lies towards the centre of the Large Magellanic Cloud — one of our closest cosmic neighbours. The Large Magellanic Cloud is a dwarf galaxy that hosts an extremely rich population of star clusters, making it an ideal laboratory for investigating star formation.

Discovered in November 1834 by British astronomer John Herschel, NGC 1898 has been scrutinised numerous times by the NASA/ESA Hubble Space Telescope. Today we know that globular clusters belong to the oldest known objects in the Universe and that they are relics of the first epochs of galaxy formation. While we already have a pretty good picture on the globular clusters of the Milky Way — still with many unanswered questions — our studies on globular clusters in nearby dwarf galaxies just started. The observations of NGC 1898 will help to determine if their properties are similar to the ones found in the Milky Way, or if they have different features, due to being in a different cosmic environment.

This image was taken by Hubble’s Advanced Camera for Surveys (ACS) and Wide Field Camera 3 (WFC3). The WFC3 observes light ranging from near-infrared to near-ultraviolet wavelengths, while the ACS explores the near-infrared to the ultraviolet.

Credit:

ESA/Hubble & NASA 

Coordinates
Position (RA): 	5 16 43.07
Position (Dec):	-69° 39' 23.27"
Field of view: 	1.92 x 1.89 arcminutes
Orientation:   	North is 104.7° left of vertical



Colours & filters Band	Wavelength	Telescope
Optical B	438 nm	Hubble Space Telescope WFC3
Ultraviolet B	336 nm	Hubble Space Telescope WFC3
Optical B	475 nm	Hubble Space Telescope ACS
Infrared I	814 nm	Hubble Space Telescope ACS
.
日期 1 October 2018, 06:00 (release)
来源 https://www.spacetelescope.org/images/potw1840a/
作者 Credit: ESA/Hubble & NASA

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当前2018年10月1日 (一) 05:312018年10月1日 (一) 05:31版本的缩略图2,913 × 2,865（21.67 MB）Fabian RRRR== {{int:filedesc}} == {{Information |description={{en|1='''Celestial fairy lights Celestial fairy lights This glittering ball of stars is the globular cluster NGC 1898, which lies towards the centre of the Large Magellanic Cloud — one of our closest cosmic neighbours. The Large Magellanic Cloud is a dwarf galaxy that hosts an extremely rich population of star clusters, making it an ideal laboratory for investigating star formation. Discovered in November 1834 by British astronomer John Her...

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