SN 2008D

SN 2008D was a supernova of type Ibc, which shone in the galaxy NGC 2770.

The discovery by the Swift satellite research took place by accident when the satellite on January 9, 2008, the supernova SN 2007uy observed, which was only discovered a few weeks earlier in the same galaxy. The discovery took place at an early stage, so that the entire course of the supernova could be followed. The satellite observed this about 400 seconds an X-ray signal, which was far stronger than the background level. About 80 minutes later saw other sensors on board at this point a sharp increase in brightness in the UV and visible range. This was followed by a worldwide observation campaign with various instruments such as the Hubble Space Telescope, the Chandra X-ray satellites and observatories around the world.

Due to the afterglow in X-rays and in the optical light, the supernova was first classified as a type Ic. Later observations of the spectrum of SN 2008D showed that before the explosion, no helium envelope was repelled, which is a property of supernova of type Ib. Furthermore, the absence of hydrogen in the spectrum of the star indicates a Wolf -Rayet star as a predecessor of the supernova.

Coordinates ( equinox J2000.0 )

• Right Ascension: 9h 9m 30,65 s
• Declination: 33 ° 8 ' 20.3 "