Transcript Class II Supernova

Class II Supernova
The Interstellar Explosion of the
cosmos
• Class II Supernova
-Remnant
The left over shell
after the
supernova
CoreThe Central most
point where the
reaction occurs
DebrisFlying rocks and
asteroids expelled
by the supernova
How Much Energy is in a
Supernova?
•It will produce as much energy in it’s time span, then the sun will in its lifetime.
•It is not uncommon for a supernova to outshine an entire galaxy.
•Quite rare, but sometimes 1 supernova will trigger another one to start.
•A type II must have from 3-9 solar masses.
How Do You Classify A
supernova?
Type 1a
Doesn’t have Hydrogen
Type 1b
Has Non-Ionized Helium
Type 1c
Has little or no helium
Type 2P
Light has “Plateau” effect
Type 2L
Light has “Linear” effect
•Class II can be divided, because of their emission spectra
•Unlike a Type I supernova, the mass and brightness can vary
•Type 2P has a Very wide wavelength,
•A type PL has a somewhat small wavelength,
•A rare Type 2N has an extremely narrow wavelength, (thus the “n”)
What Causes a supernova?
Stars with anywhere from 3-9 solar masses have hydrogen in their core. When
the hydrogen combines with the helium, it produces thermal energy. This is
how the star is maintained.
When the star runs out or stops producing hydrogen the thermal energy
doesn’t maintain the star anymore.
This makes the core of the star collapse.
When it collapses on itself, the helium ignites.
Work Cited:
http://www.flickr.com/photos/smithsonian/2941498208/
http://imagine.gsfc.nasa.gov/docs/teachers/lessons/xray_spectra/background-lifecycles.html
ttp://map.gsfc.nasa.gov/universe/rel_stars.html