Astronomy:NGC 3220
| NGC 3220 | |
|---|---|
 The spiral galaxy NGC 3220. | |
| Observation data | |
| Constellation | Ursa Major |
| Right ascension | 10h 23m 44.6s[1] |
| Declination | +57° 01′ 37″[1] |
| Redshift | 0.003875 ± 0.000006[1] |
| Helio radial velocity | 1162 ± 2 km/s[1] |
| Distance | 63.5 ± 4.5 Mly (19.47 ± 1.37 Mpc)[1] |
| Group or cluster | NGC 3264 group |
| Apparent magnitude (V) | 13.1[2] |
| Apparent magnitude (B) | 13.9[2] |
| Characteristics | |
| Type | SB(s)cd?[1][2] Sd[3] |
| Apparent size (V) | 1.3′ × 0.5′[2] |
| Other designations | |
| IC 604, UGC 5614, MCG10-15-73, PGC 30462 | |
NGC 3220 is a spiral galaxy located in the constellation Ursa Major. It was discovered by the German-born British astronomer William Herschel on 8 April 1793.[3]
The galaxy was also observed by the American astronomer Lewis Swift on 8 August 1890 and was subsequently listed in the Index Catalogue as IC 604.[3]
Characteristics
Its velocity relative to the cosmic microwave background is 1320±11 km/s, corresponding to a Hubble distance of 63.6 ± 4.6 Mly (19.5 ± 1.4 Mpc).[1]
The luminosity class of NGC 3220 is II, and it exhibits a broad H I line.[1]
NGC 3264 Group
NGC 3220 is a galaxy that is bright in X-rays[1] and is a member of the NGC 3264 group, which contains six galaxies. The five other members are NGC 3206, NGC 3264, NGC 3353, UGC 5848, and UGCA 211.[4]
The same group with the same galaxies was also identified in a study published by A. M. Garcia in 1993.[5]
NGC 3206 and NGC 3220 lie in the same region of the sky and, according to a study conducted by Abraham Mahtessian in 1988, they form a galaxy pair.[6]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "Results for object NGC 3220" (in en). NASA/IPAC Extragalactic Database. http://ned.ipac.caltech.edu/byname?objname=NGC+3220&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1.
- ↑ 2.0 2.1 2.2 2.3 "Data from the "Revised NGC and IC Catalog" by Wolfgang Steinicke, NGC 3200 to 3299" (in fr). https://astrovalleyfield.com/AstronomieCompl/NGC%20et%20autres/WolfgangS/N3200_exc_web.htm.
- ↑ 3.0 3.1 3.2 Seligman, Courtney. "Celestial Atlas Table of Contents, NGC 3220" (in en). https://cseligman.com/text/atlas/ngc32.htm#3220.
- ↑ Sengupta, Chandreyee; Balasubramanyam, Ramesh (June 2006). "HI content in galaxies in loose groups". Monthly Notices of the Royal Astronomical Society 369 (1): 360–368. doi:10.1111/j.1365-2966.2006.10307.x. Bibcode: 2006MNRAS.369..360S.
- ↑ Garcia, A. M. (July 1993). "General study of group membership. II - Determination of nearby groups". Astronomy and Astrophysics Supplement Series 100 (1): 47–90. Bibcode: 1993A&AS..100...47G.
- ↑ Mahtessian, Abraham (July 1998). "Groups of galaxies. III. Some empirical characteristics". Astrophysics 41 (3): 308–321. doi:10.1007/BF03036100.
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