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supernovae are classified by the lines in their spectra (which indicate which elements are present). type I supernovae have no hydrogen lines, having been caused by the explosion of a star with no hydrogen envelope. type II supernovae have hydrogen lines, indicating that the exploding progenitor star had retained a significant amount of its hydrogen before its supernova.
type I supernovae are further classified based on the presence of silicon lines, which are present in type Ia supernovae but not types Ib and Ic.
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What are Type II supernovae produced by?
Supernovae are classified as Type I or Type II depending upon the shape of their radioactive decay of the unstable heavy elements produced in the explosion.
Why does a type Ia supernova make a better indicator of distance than a type II supernova?
Type Ia supernovae [See Link] follow a characteristic light curve. This luminosity is generated by the radioactive decay of certain elements. The peak luminosity of the light curve was believed to be consistent across Type Ia supernovae as having a maximum absolute magnitude of about -19.3. This would allow them to be used as a secondary "standard candle" [See Link] to measure the distance to their host galaxies
What is the main difference between meiosis I and meiosis II is that in meiosis II?
four gametes are produced for every original cell
List the key difference between meiosis 1 and 2?
Meiosis I is reductional but meiosis II is equational division .
What type of star explodes in a type II supernova?
Supergiant stars of at least eight solar masses will explode as Type II supernovas.
What are Type II supernovae produced by?
Supernovae are classified as Type I or Type II depending upon the shape of their radioactive decay of the unstable heavy elements produced in the explosion.
Black holes form from the remains of stars that?
"explode as supernovae". These are called Type II supernovae and sometimes a neutron star is formed, not a black hole.
What is the difference between Dexron II and type D valvoline ATF?
there is no difference..atf type D is a designation of valvoline..
What is the difference between a 1979 s type 1 and 2 Jefferson nickel?
For the type I the mintmark is filled and the type II the mintmark is clear.
What is the difference between Basel II and Basel III?
There is a main difference between Basel II and Basel III. In Basel III, there is a 4.5% capital buffer to absorb shock. With Basel II, there is no capital buffer.
What is the difference type 1 and type 2 roofing felt?
type I is 15# felt and type II is 30# felt
What is the difference between hypersensitivity type II and Type III?
Type II hypersensitivity is also known as cytotoxicity hypersensitivity and it may affect variety of organs and tissues. The antigens are endogenous and exogenous chemicals. Type III Hypersensitivity complex type of hypersensitivity and it may affect individual organs like skin, Liver etc.
What are the symptoms that distinguish between type I and type II diabetes?
Type II diabetes symptoms tend to be more severe than thype I.
What is the difference between PSI and PSII?
Photosystem I - 700nmPhotosystem II - 680nm
What is the difference between bronco ii and Eddie Bauer brono ii?
so take a ford f150... the only difference between it and a "king ranch edition" f150 is its nicer and more expensive. its just a higher end model of the bronco II.
Why does a type Ia supernova make a better indicator of distance than a type II supernova?
Type Ia supernovae [See Link] follow a characteristic light curve. This luminosity is generated by the radioactive decay of certain elements. The peak luminosity of the light curve was believed to be consistent across Type Ia supernovae as having a maximum absolute magnitude of about -19.3. This would allow them to be used as a secondary "standard candle" [See Link] to measure the distance to their host galaxies
What is the difference between snowball I and snowball II the simpson's cat?
snowball I had white snowball II is a black cat
