Astronomy:NGC 1169
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Short description: Intermediate barred spiral galaxy in the constellation Perseus
| 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 | 35.1 ± 8.4 kpc (114 ± 27 kly)h−10.73 [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 (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 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]
References
- ↑ 1.0 1.1 "Astronomy Photo of the Day: 1/03/15 — NGC 1169". http://futurism.com/astronomy-photo-day-10314-ngc-1169/.
- ↑ 2.0 2.1 2.2 "SIMBAD Astronomical Database". Results for NGC 1169. http://simbad.u-strasbg.fr/simbad/.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 "NASA/IPAC Extragalactic Database". Results for NGC 1169. http://www.ned.ipac.caltech.edu/.
- ↑ 4.0 4.1 4.2 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. "The Beauty of a Grain of Sand on the Cosmic Beach". http://www.slate.com/blogs/bad_astronomy/2015/01/01/ngc_1169_photo_of_a_barred_spiral_galaxy.html.
- ↑ "New General Catalog Objects: NGC 1150 - 1199". http://cseligman.com/text/atlas/ngc11a.htm.
External links
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