| 词条 | NGC 1128 |
| 释义 |
| name = NGC 1128 | image = 3c75.jpg | image_size = 300px | caption = Binary black hole system 3C 75 contained in the dumbbell shaped galaxy NGC 1128 | epoch = J2000 | ra = {{RA|2|57|41.6}}[1] | dec = {{DEC|+6|01|29}}[1] | constellation name = | z = 6940 ± 20 km/s[1] | dist_ly = 300 Mly[2] | type = E0[1] | appmag_v = 13.8[1] | size_v = 0'.9 × 0'.4[1] | notes = Dumbbell-shaped galaxy | names = PGC 11188[1] }} NGC 1128 is a dumbbell galaxy in the Abell 400 galaxy cluster. At the center of the galaxy is 3C75, a radio source, and contains two orbiting supermassive black holes that may be merging. Computer simulations indicate that these two black holes will gradually spiral in toward each other until they merge. Lewis Swift is credited with the discovery of NGC 1128 in 1886. [3]References1. ^1 2 3 4 5 6 {{cite web | title=NASA/IPAC Extragalactic Database | work=Results for | url=http://nedwww.ipac.caltech.edu/ | accessdate=2006-10-26}} 2. ^{{Cite web | url=https://apod.nasa.gov/apod/ap171022.html | title=APOD: 2017 October 22 - Two Black Holes Dancing in 3C 75}} 3. ^{{cite web|last1=Seligman|first1=Courtney|title=Celestial Atlas: NGC Objects: NGC 1100 - 1149|url=http://cseligman.com/text/atlas/ngc11.htm#1128|website=cseligman.com|accessdate=25 July 2015|archiveurl=https://www.webcitation.org/6aHD4i83v?url=http://cseligman.com/text/atlas/ngc11.htm#1128|archivedate=25 July 2015|deadurl=yes|df=}} External links
5 : Interacting galaxies|Radio galaxies|Abell 400|NGC objects|Principal Galaxies Catalogue objects |
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