Question R3 Q10 - NSB Double Elimination 2012

Why are Type 1a supernovae [soo-per-NOH-vee] thought to have different progenitors from other kinds of supernovae?

W) They have very different light curves from other supernovae

X) They are 100 times more luminous than all other kinds of supernovae

Y) The lack of hydrogen lines in their spectra means that the progenitor must have lost its envelope

Z) They are seen in all galaxies, whereas other kinds of supernovae are only seen in star- forming regions of spiral galaxies

Science Bowl Question