SN 2005bc
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| Observation data (Epoch J2000.0) |
||
|---|---|---|
| Supernova type | Ia | |
| Remnant type | unknown | |
| Host Galaxy | NGC 5698 | |
| Constellation | Boötes | |
| Right ascension | 14h 37m 15.050s | |
| Declination | +38° 27′ 23.10″ | |
| Galactic coordinates |
Long 66.764500°
Lat 65.168763° |
|
| Discovery Date | 2nd April 2005 [1] | |
| Peak magnitude (V) | +15.3 | |
| Physical characteristics | ||
| Progenitor | Unknown | |
| Progenitor type | White Dwarf | |
| Colour (B-V) | Unknown | |
| Notable features | None | |
SN 2005bc was a Type Ia supernova occurring in the barred-spiral galaxy NGC 5698 in the constellation of Boötes. SN 2005bc was discovered on 2nd April 2005 by LOSS and independently by Tim Puckett and L. Cox.
[edit] Discovery
The supernova was at magnitude 16.4 at discovery, and quickly rose to a peak magnitude of around 15.3 (in visible light) just over a week after discovery. By mid-May, the supernova had faded to 17th magnitude.
The host galaxy, NGC 5698, along with the supernova lie approximately 200 million light-years (~60 million parsecs) from Earth. This puts the absolute magnitude of the supernova at around −18.6 at maximum, rather faint for a Type Ia event.
As the supernova was of Type Ia, its progenitor star was a White Dwarf star which exceeded the Chandrasekhar limit.
Below is an image of SN 2005bc and NGC 5698 taken just over a week after peak brightness. 
