| NGC 1291 | |
|---|---|
 This composite image of NGC 1291 is processed primarily from data collected byNASA'sGalaxy Evolution Explorer in December 2003. The blue in this image isultraviolet light captured by GALEX's long wavelength detector, the green is ultraviolet light detected by its short wavelength detector, and the red in the image is visible light courtesy of data from theCerro Tololo Inter-American Observatory inChile.[1] | |
| Observation data (J2000epoch) | |
| Constellation | Eridanus |
| Right ascension | 03h 15m 29.6s[2] |
| Declination | −41° 17′ 25.6″[2] |
| Redshift | 0.002799 (839 ± 2 km/s)[2] |
| Distance | 33Mly |
| Apparent magnitude (V) | 9.39[2] |
| Absolute magnitude (V) | −21.05[3] |
| Characteristics | |
| Type | (R_1)SB(l)0/a[2] |
| Apparent size (V) | 9′.8 × 8′.1[2] |
| Notable features | inner bar and outer ring structure |
| Other designations | |
| PGC 012209,[2] | |
NGC 1291, also known asNGC 1269,[4] is aring galaxy with an unusual inner bar and outer ring structure located about 33 millionlight-years away in theconstellationEridanus.[1] It was discovered byJames Dunlop in 1826 and subsequently entered into theNew General Catalogue as NGC 1291 byJohan Ludvig Emil Dreyer.John Herschel then observed the same object in 1836 and entered it into the catalog as NGC 1269 without realizing that it was a duplicate.[4] This galaxy was cited as an example of a "transitional galaxy" byNASA'sGalaxy Evolution Explorer team in 2007.[5]
NGC 1291 faces towards the Solar System nearly face-on. It has a prominentbulge, and is forming stars in its disk, albeit slowly, being a lenticular galaxy.[3]
Like other early-type galaxies, NGC 1291 has a population of oldglobular clusters. About 65% of them belong to the "blue" population that is moremetal-poor, while the rest are "red" and more metal-rich.[3]
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