Arp 227


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Catalog
Obj Type
Location
Date Taken:
Hanson
Arp 227
Galaxy
Ctio, Chile
10-01-2017
Description

Arp 227 in Pisces

consists of NGC 470 and 474 at the center of the field. NGC 470, the smaller, colorful galaxy at left, is a classic, SB(r) spiral. The larger NGC 474 at right is a lenticular galaxy, but more interestingly, also a 'shell galaxy,' believed to be the result of a galactic merger. Note its subtle, concentric 'shells.' 474 is approximately 250,000 light-years across. Curiously, NGC 467 at upper-left, is also a shell galaxy, and appears to be interacting with the edge-on PGC 1249151 to its right. Other interesting PGC (Principal Galaxies Catalog) galaxies that appear in the field are 4755 and 4765 at 12 o'clock, and the lovely little face-on 1252050 at 4 o'clock. This data was acquired by SSRO in 2016.

Technical Details
Exposure Time:
22h Lum, 13h RGB each
Camera:
Finger Lakes PL 16803
Telescope:
RCOS Carbon Truss 16 inch f/11.3 Ritchey-Chretien
Mount:
Planewave 200HR
© 2018 Hanson
Used with permission, No reproduction of these images are permitted without written approval from Hanson.