type II supernova concept from the Astronomy knowledge base

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type II supernova

subject fact

type II supernova has frequency 0.01 to 0.05 per year (in our Galaxy) has source: Tammann (1974), 2001-09-27 09:30:42.0
has absolute magnitude M_v = - 12 to - 13.5 has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:42.0
has spectra hydrogen lines
has ejecta velocity 5000 km s^-1
has mass higher than type II supernova
has location young, massive stars near the edge of spiral arms has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:42.0
has definition A gigantic stellar explosion in which the star's luminosity suddenly increases by as much as a billion times. Most of the star's substance is blown off, leaving behind, at least in some cases, an extremely dense core which may be a neutron star. has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:42.0
is a kind of supernova

supernova has energy release 10⁴⁹ to 10⁵¹ ergs
has use supernova peak brightness distance determination
has peak brightness 10⁸ solar luminosity units

emission line star has emission line 2001-09-27 09:30:27.0

cataclysmic variable has synonym eruptive variable 2001-09-27 09:30:40.0
has synonym explosive variable
has recovery time
has outburst start time
has acronym CV

star has star surface temperature 2001-09-27 09:30:25.0
has spectral type
has V magnitude
has B magnitude
has U magnitude
has position on celestial sphere from the point of view of Earth
has parallax from the point of view of Earth's orbit
has proper motion 2001-09-27 09:30:24.0
has radiation at surface which is diffused out from the hotter core
has energy source gravitational contraction and or fusion
has energy production which takes place primarily within the core
has surface density which depends on luminosity class
has surface temperature greater than 1000 Kelvin 2001-09-27 09:30:24.0
has apparent magnitude 2001-09-27 09:30:25.0
has age
has catalog star catalog
has material hydrogen, helium
has velocity determined from proper motion and radial velocity

variable has name designated with
R, S, T, U, V, W, X, Y, or Z and the genitive of the latin constellation name
RR, RS, RT, RU, RV, RW, RX, RY, or RZ and the genitive of the latin constellation name when the single letter designations are exhausted
AA...AZ, BB...BZ, etc. (omitting J), which ends with QQ...QZ and the genitive of the latin constellation namewhen the RR...RZ designations are exhausted
V 335, V 336, etc., when the double letter designations are exhausted
2001-09-27 09:30:34.0
has observational problem some difficulty in distinguishing between various kinds
has observable variation time scale within a period of decades has URL: http://www.aavso.org, 2001-09-27 09:30:34.0
has light curve
has optical brightness variation 0.2 magnitudes or greater
has amplitude

physical object has angular momentum 2001-09-27 09:27:27.0
has momentum
has temperature
has volume
has extent

Kinds of type II supernova :

SN 1987A (4 facts)

Next supernova: type III supernova Up: supernova Previous supernova: type I supernova

type II supernova	has frequency 0.01 to 0.05 per year (in our Galaxy)
	has absolute magnitude M_v = - 12 to - 13.5
	has spectra hydrogen lines
	has ejecta velocity 5000 km s^-1
	has mass higher than type II supernova
	has location young, massive stars near the edge of spiral arms
	has definition A gigantic stellar explosion in which the star's luminosity suddenly increases by as much as a billion times. Most of the star's substance is blown off, leaving behind, at least in some cases, an extremely dense core which may be a neutron star.
	is a kind of supernova
supernova	has energy release 10⁴⁹ to 10⁵¹ ergs
	has use supernova peak brightness distance determination
	has peak brightness 10⁸ solar luminosity units
emission line star	has emission line
cataclysmic variable	has synonym eruptive variable
	has synonym explosive variable
	has recovery time
	has outburst start time
	has acronym CV
star	has star surface temperature
	has spectral type
	has V magnitude
	has B magnitude
	has U magnitude
	has position on celestial sphere from the point of view of Earth
	has parallax from the point of view of Earth's orbit
	has proper motion
	has radiation at surface which is diffused out from the hotter core
	has energy source gravitational contraction and or fusion
	has energy production which takes place primarily within the core
	has surface density which depends on luminosity class
	has surface temperature greater than 1000 Kelvin
	has apparent magnitude
	has age
	has catalog star catalog
	has material hydrogen, helium
	has velocity determined from proper motion and radial velocity
variable	has name designated with R, S, T, U, V, W, X, Y, or Z and the genitive of the latin constellation name RR, RS, RT, RU, RV, RW, RX, RY, or RZ and the genitive of the latin constellation name when the single letter designations are exhausted AA...AZ, BB...BZ, etc. (omitting J), which ends with QQ...QZ and the genitive of the latin constellation namewhen the RR...RZ designations are exhausted V 335, V 336, etc., when the double letter designations are exhausted
	has observational problem some difficulty in distinguishing between various kinds
	has observable variation time scale within a period of decades
	has light curve
	has optical brightness variation 0.2 magnitudes or greater
	has amplitude
physical object	has angular momentum
	has momentum
	has temperature
	has volume
	has extent