| NGC 2566 | |
|---|---|
 NGC 2566 imaged by theHubble Space Telescope | |
| Observation data (J2000epoch) | |
| Constellation | Puppis |
| Right ascension | 08h 18m 45.6034s[1] |
| Declination | −25° 29′ 58.053″[1] |
| Redshift | 0.005460[1] |
| Heliocentric radial velocity | 1637 ± 3 km/s[1] |
| Distance | 91.3 ± 6.5 Mly (28.00 ± 1.98 Mpc)[1] |
| Group orcluster | PGC 80593 Group |
| Apparent magnitude (V) | 11.0[1] |
| Characteristics | |
| Type | (R')SB(rs)ab pec?[1] |
| Size | ~64,500 ly (19.77 kpc) (estimated)[1] |
| Apparent size (V) | 2.9′ × 1.7′[1] |
| Other designations | |
| ESO 495- G 003,IRAS 08166-2520,2MASX J08184560-2529582,UGCA 138,MCG -04-20-008,PGC 23303[1] | |
NGC 2566 is abarred spiral galaxy in theconstellation ofPuppis. Its velocity with respect to thecosmic microwave background is 1898 ± 19 km/s, which corresponds to aHubble distance of 91.3 ± 6.5 Mly (28.00 ± 1.98 Mpc).[1] However, fivenon-redshift measurements give a much closer distance of 35.39 ± 8.42 Mly (10.852 ± 2.583 Mpc).[2] It was discovered byGerman-British astronomerWilliam Herschel on 6 March 1785.[3]
Eskridge, Frogel, and Pogge published a paper in 2002 describing the morphology of 205 closely spacedspiral orlenticular galaxies. The observations were made in theH-band of theinfrared and in the B-band (blue). Eskridge and colleagues described NGC 2566 as a:
Nuclear point source embedded in a large slightly ellipticalbulge. Bulge is threaded by a long, thin, bright bar. Underlying LSB [Low Surface Brightness] disk, with an outer ring/tightly woundspiral arms. The ring is irregular and lumpy but has no obvious bright knots of currentstar formation. The disk P.A. [Position Angle] is offset ~30 degrees away from that defined by the bar. The outer diskisophotes appear offset from the nucleus of the galaxy. However, sky irregularities make the disk hard to characterize.[4]
NGC 2566 is a member of the PGC 80593 Group, which contains 16 galaxies. In addition to NGC 2566 and PGC 80593, the group includes UGCA 137, IC 2311,NGC 2559, PGC 23156, and 10 galaxies from the ESO catalogue. It is part of the Puppis Wall, which connects theAntlia Cluster with theFornax Cluster.[5]
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Media related toNGC 2566 at Wikimedia Commons
