NGC 1169
NGC 1169 (UGC 2503) is an intermediate barred spiral galaxy in the constellation of Perseus. NGC 1169 has a reddish center, indicating the region is dominated by older stars. In contrast, the outer ring contains larger blue-white stars, a sign of recent star formation.[1][5] The entire galaxy is rotating at approximately 265 km/s [4]
| NGC 1169 | |
|---|---|
 Image of NGC 1169 taken by Adam Block | |
| Observation data (J2000 epoch) | |
| Constellation | Perseus[1] |
| Right ascension | 03h 03m 34.756s [2] |
| Declination | +46° 23′ 10.74″ [2] |
| Redshift | 0.007962 ± 0.000017 [3] |
| Helio radial velocity | 2387 ± 5 km/s [3] |
| Galactocentric velocity | 2508 ± 5 km/s [3] |
| Distance (comoving) | 35.1 ± 8.4 kpc (114 ± 27 kly)h−1 0.73 [3] |
| Apparent magnitude (V) | 9.02 [3] |
| Apparent magnitude (B) | 13.2 [2] |
| Absolute magnitude (V) | -23.6 [3] |
| Characteristics | |
| Type | SAB(r)b [3] |
| Mass | 4.5×1011 [4] M☉ |
| Mass/Light ratio | 10 [4] M☉/L☉ |
| Size | 120,000 × 84,000 ly [3] |
| Apparent size (V) | 4.2 × 2.8 arcmin [3] |
| Other designations | |
| NGC 1169, UGC 2503, PGC 11521 | |
NGC 1169 was discovered on December 11, 1786 by William Herschel.[6] Measurements of its distance range from 20.9 Mpc - 49.7 Mpc with an average of 35.1 Mpc.[3] and exhibits a slight ring structure.
References
- "Astronomy Photo of the Day: 1/03/15 — NGC 1169". futurism.com. Retrieved 2015-12-01.
- "SIMBAD Astronomical Database". Results for NGC 1169. Retrieved 2015-11-30.
- "NASA/IPAC Extragalactic Database". Results for NGC 1169. Archived from the original on 1997-12-22. Retrieved 2015-11-30.
- van Driel, W.; van Woerden, H. (1994). "Distribution and motions of HI in the Sa galaxies NGC 1169 and NGC 3898". Astronomy and Astrophysics. 284: 395–407. Bibcode:1994A&A...286..395V.
- Plait, Phil (January 2015). "The Beauty of a Grain of Sand on the Cosmic Beach". slate.com. Retrieved 2015-12-01.
- "New General Catalog Objects: NGC 1150 - 1199". cseligman.com. Retrieved 2015-12-01.
External links
- SIMBAD Astronomical Database
- NASA/IPAC Extragalactic Database
- Paper on NGC 1169 and NGC 3898
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