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SN 2005cs

2005 supernova event in constellation Canes Venatici

Field	Value
name	SN 2005cs
image	File:SN2005cs.jpg
event_type	Supernova
class	Type IIp
constellation	Canes Venatici
ra
dec
epoch	J2000
distance	8.4 ±
host	Whirlpool Galaxy
progenitor	7–
progenitor_type	Red Supergiant
b-v	0.14 ±0.02
peak	14.5
discovery	27.4 million years ago

| b-v = 0.14 ±0.02

(discovered 28 June 2005 by Wolfgang Kloehr)}} SN 2005cs was a supernova in the spiral galaxy M51, known as the Whirlpool Galaxy. It was a type II-P core-collapse supernova, discovered June 28, 2005 by Wolfgang Kloehr, a German amateur astronomer. The event was positioned at an offset of west and south of the galactic nucleus of M51. Based on the data, the explosion was inferred to occur 2.8 days before discovery. It was considered under-luminous for a supernova of its type, releasing an estimated in energy.

The progenitor star was identified from a Hubble Space Telescope image taken January 20–21, 2005. It was a red supergiant with a spectral type in the mid-K to late-M type range and an estimated initial (ZAMS) mass of . A higher mass star enshrouded in a cocoon of dust has been ruled out.

References

Info: Wikipedia Source

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