A supernova is an stel·lar explosion that's mor energetic than a nova. Its the last phase of some binary and massive stars.
Supernovas origin electromagnetic radiation emissions that can last for weeks and months. They suffer a fast increasement of their brilliance intensity and then it decreases slowly until it completly disapears.
How are supernovas formed?
They usually originate at the last stage of massive stars or when a white dwarf becomes a descontroled nuclear fusion.
Types of supernova:
- Type I: Doesn’t contain hydrogen
-Type Ia: Presents a single ionised silicon
-Type Ib: Shows a non-ionised helium
-Type Ic: Weak or no helium
- Type II: Presents hydrogen
-Type II-P: No narrow lines. Reaches a plateau in its light curve
-Type II-L: No narrow lines. Displays a “linear” decrease in its light curve
-Type IIn: Some narrow lines