NGC 1559 is a barred spiral galaxy in the constellation Reticulum. It is also a Seyfert galaxy. Although it was originally thought to be a member of the Dorado Group,[2] subsequent observations have shown that it is in fact not a member of any galaxy group or cluster and does not have any nearby companions.[3][4] NGC 1559 has massive spiral arms and strong star formation.[3] It contains a small bar which is oriented nearly east-west and spans 40″.[3] Its bar and disc are the source of very strong radio emissions.[3]
NGC 1559 | |
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Observation data (J2000.0 epoch) | |
Constellation | Reticulum |
Right ascension | 4h 17m 35.8s[1] |
Declination | −62° 47′ 1″[1] |
Redshift | 1304 ± 4 km/s[1] |
Apparent magnitude (V) | 11[1] |
Characteristics | |
Type | SB(s)cd[1] |
Apparent size (V) | 3.5′ × 2.0′[1] |
Other designations | |
PGC 14814[1] |
Four supernovae have been observed in NGC 1559. Australian amateur astronomer Robert Evans[5] discovered the first three: SN 1984J (type II, mag. 13.5),[6] SN 1986L (type II, mag. 13.5),[7] and SN 2005df (Type Ia, mag 12.3).[8] SN 2009ib (type IIP, mag. 14.7)[9] was discovered on 6 August 2009.