NGC 1559

NGC 1559 is a barred spiral galaxy in the constellation Reticulum. It was discovered on 6 November 1826 by Scottish astronomer James Dunlop.

NGC 1559 is a Seyfert galaxy, i.e. it has a quasar-like nuclei with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable. Although it was originally thought to be a member of the Dorado Group, 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. NGC 1559 has massive spiral arms and strong star formation. It contains a small bar which is oriented nearly east–west and spans 40. Its bar and disc are the source of very strong radio emissions.

Supernovae

Four supernovae have been observed in NGC 1559:

• SN 1984J (Type II, mag. 13.5) was discovered by Australian amateur astronomer Robert Evans on 27 July 1984.
• SN 1986L (Type II, mag. 13.5) was discovered by Robert Evans on 7 October 1986.
• SN 2005df (Type Ia, mag 13.8) was discovered by Robert Evans on 4 August 2005. It got as bright as magnitude 12.3, making it the brightest supernova observed in 2005.
• SN 2009ib (Type II-P, mag. 14.7) was discovered by the CHASE project (CHilean Automatic Supernova sEarch) on 6 August 2009.

See also

• List of NGC objects (1001–2000)

References

External links