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NGC 6872 (Interacting Galaxy)


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NGC 6872
Interacting Galaxy (相互作用銀河)

別名 (Other names)
PGC 64413, ESO 73-32, VV 297

明るさ (Brightness)

11.7等級


星座 (Constellation)
くじゃく座 (Pav) (Pavo)

距離 (Distance)
2億光年 (200 million light-years)

NGC 6872 is an interacting galaxy located 200 million light years from the Earth in the constellation Pavo.

NGC 6872 (Interacting Galaxy) : Picture

Giant Galaxy NGC 6872
Giant Galaxy NGC 6872
(C) Sydney Girls High School Astronomy Club, Travis Rector (Univ. Alaska), Ángel López-Sánchez (Australian Astronomical Obs./ Macquarie Univ.), Australian Gemini Office
Over 400,000 light years across NGC 6872 is an enormous spiral galaxy, at least 4 times the size of our own very large Milky Way. About 200 million light-years distant, toward the southern constellation Pavo, the Peacock, the remarkable galaxy's stretched out shape is due to its ongoing gravitational interaction, likely leading to an eventual merger, with the nearby smaller galaxy IC 4970. IC 4970 is seen just below and right of the giant galaxy's core in this cosmic color portrait from the 8 meter Gemini South telescope in Chile. The idea to image this titanic galaxy collision comes from a winning contest essay submitted last year to the Gemini Observatory by the Sydney Girls High School Astronomy Club. In addition to inspirational aspects and aesthetics, club members argued that a color image would be more than just a pretty picture. In their winning essay they noted that "If enough colour data is obtained in the image it may reveal easily accessible information about the different populations of stars, star formation, relative rate of star formation due to the interaction, and the extent of dust and gas present in these galaxies".

NGC 6872
NGC 6872
(C) NASA

NGC 6872: A Stretched Spiral
NGC 6872: A Stretched Spiral
(C) FORS Team, 8.2-meter VLT Antu, ESO, NASA

NGC 6872 NGC 6872
NGC 6872
(C) Australian Gemini Office
NGC 6872
(C) NASA
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