Why do the explosions of Type Ia supernovae have a more predictable spectrum than those of regular Type II supernovae?
Why do the explosions of Type Ia supernovae have a more specific mix of elements and more predictable spectrum than those of regular Type II supernovae?
Type II supernovae are explosions of massive stars and the masses of these stars have a very wide range. On the other hand, Type Ia supernovae occur because of accretion onto a white dwarf and the explosion occurs when the mass of the white dwarf exceeds the Chandrasekhar mass (beyond which electron degeneracy pressure can no longer support the star). Hence Type Ia supernovae are explosions of stars with roughly the same mass. Hence, they look similar. If you could get a database of Type II supernovae of stars with same mass and metallicity (which is the amount of elements higher than Helium that the star has) then you might see similar spectra.
Get More 'Curious?' with Our New PODCAST:
- Podcast? Subscribe? Tell me about the Ask an Astronomer Podcast
- Subscribe to our Podcast | Listen to our current Episode
- Cool! But I can't now. Send me a quick reminder now for later.
How to ask a question:
If you have a follow-up question concerning the above subject, submit it here. If you have a question about another area of astronomy, find the topic you're interested in from the archive on our site menu, or go here for help.Table 'curious.Referrers' doesn't existTable 'curious.Referrers' doesn't exist
This page has been accessed 25410 times since August 26, 2002.
Last modified: August 26, 2002 9:16:21 PM
Ask an Astronomer is hosted by the Astronomy Department at Cornell University and is produced with PHP and MySQL.
Warning: Your browser is misbehaving! This page might look ugly. (Details)