Absolute Magnitudes of Supernovae
... determine the absolute magnitudes of Type Ia supernovae occurring in distant galaxies. Background - During a three-week period in 1997, the Hubble Space Telescope was used to observe a supernova - an exploding star in a distant galaxy. These exploding stars appear suddenly, as they increase rapidly ...
... determine the absolute magnitudes of Type Ia supernovae occurring in distant galaxies. Background - During a three-week period in 1997, the Hubble Space Telescope was used to observe a supernova - an exploding star in a distant galaxy. These exploding stars appear suddenly, as they increase rapidly ...
HR Diagram of One Solar Mass Evolution
... • Most stars become white dwarfs • So there are billions in our galaxy, but they are faint ...
... • Most stars become white dwarfs • So there are billions in our galaxy, but they are faint ...
Supernovae Gamma-Ray Bursts and and some of their uses
... surrounding interstellar medium at V > 104 km/s, compresses it, intermingles with it, enriches it with freshly synthesized heavy elements, and forms what is called a supernova remnant • Supernova remnants may be observed for hundreds of thousands of years as often beautiful, visual objects, but also ...
... surrounding interstellar medium at V > 104 km/s, compresses it, intermingles with it, enriches it with freshly synthesized heavy elements, and forms what is called a supernova remnant • Supernova remnants may be observed for hundreds of thousands of years as often beautiful, visual objects, but also ...
Chapter 13 Notes – The Deaths of Stars
... Final stages of fusion in high-mass stars ( ___________ solar masses) leading to the formation of an ___________ core, happen extremely rapidly: _________ burning only lasts for about _______ day Iron core ultimately _________________, triggering an explosion that destroys the star: A __________ ...
... Final stages of fusion in high-mass stars ( ___________ solar masses) leading to the formation of an ___________ core, happen extremely rapidly: _________ burning only lasts for about _______ day Iron core ultimately _________________, triggering an explosion that destroys the star: A __________ ...
Life Cycle of Stars
... • When hot enough = nuclear fusion begins • Once the gas and dust blow away, the star can be seen • All stars (low and high mass) start out here ...
... • When hot enough = nuclear fusion begins • Once the gas and dust blow away, the star can be seen • All stars (low and high mass) start out here ...
Slide 1
... nebula. • Once the nebula stops, only the core of the red giant remains. • Stars will usually end their lives in this state. ...
... nebula. • Once the nebula stops, only the core of the red giant remains. • Stars will usually end their lives in this state. ...
Properties of Supernovae
... apparent magnitude of a supernova brightens by about 10 magnitudes within a few hours, and for a few months the luminosity of the star is comparable to the luminosity of the entire parent galaxy. Supernovae are rare events, occurring only once or twice per century in a typical galaxy. There have bee ...
... apparent magnitude of a supernova brightens by about 10 magnitudes within a few hours, and for a few months the luminosity of the star is comparable to the luminosity of the entire parent galaxy. Supernovae are rare events, occurring only once or twice per century in a typical galaxy. There have bee ...
Introduction to Astronomy
... • Also faintly visible at other wavelengths • A few hundred are now known • What are they? Rapidly spinning neutron stars, whose strong magnetic fields accelerate plasma to produce the beam of radio waves ...
... • Also faintly visible at other wavelengths • A few hundred are now known • What are they? Rapidly spinning neutron stars, whose strong magnetic fields accelerate plasma to produce the beam of radio waves ...
Progenitor stars of supernovae
... Energetic explosions in the universe Energy emitted 1051 ergs (1029 times more than an atmospheric nuclear explosion) One SN explosion shines brighter than the host Galaxy In universe few supernovae explosions every second ...
... Energetic explosions in the universe Energy emitted 1051 ergs (1029 times more than an atmospheric nuclear explosion) One SN explosion shines brighter than the host Galaxy In universe few supernovae explosions every second ...
Stellar evolution, II
... galaxy of our Milky Way. Neutrinos from this explosion were detected on the Earth. As the ejecta of the SN plow into the interstellar medium, an expanding ring of shocked gas is observed. ...
... galaxy of our Milky Way. Neutrinos from this explosion were detected on the Earth. As the ejecta of the SN plow into the interstellar medium, an expanding ring of shocked gas is observed. ...
Chapter 20 Notes (smaller PDF file)
... Type Ia supernova Type Ib supernova Type Ic supernova Type II supernova white dwarf ...
... Type Ia supernova Type Ib supernova Type Ic supernova Type II supernova white dwarf ...
large PDF file
... • An accreting white dwarf in a close binary system may become a supernova when carbon fusion ignites explosively throughout the degenerate star ...
... • An accreting white dwarf in a close binary system may become a supernova when carbon fusion ignites explosively throughout the degenerate star ...
Deep Space Mystery Note Form 2
... During this short interval, a supernova can radiate as much energy as our Sun could emit over its life span. The explosion expels much or all of the star’s material and causes a shock wave into the surrounding interstellar medium. The interstellar medium is the gas and dust that exists between the s ...
... During this short interval, a supernova can radiate as much energy as our Sun could emit over its life span. The explosion expels much or all of the star’s material and causes a shock wave into the surrounding interstellar medium. The interstellar medium is the gas and dust that exists between the s ...
Supernovae – the biggest bangs since the Big Bang
... Another way to blow up a star is to consider the evolution of a star with 8 times the mass of the Sun (or more). These stars are very rare. Only one in a thousand stars formed has this much mass. An 8 solar mass star will not live for 10 billion years converting hydrogen into helium in its core. ...
... Another way to blow up a star is to consider the evolution of a star with 8 times the mass of the Sun (or more). These stars are very rare. Only one in a thousand stars formed has this much mass. An 8 solar mass star will not live for 10 billion years converting hydrogen into helium in its core. ...
Supernova! Toledo Astronomical Association, February 2009
... They can briefly outshine their entire galaxy ...
... They can briefly outshine their entire galaxy ...
ASTRONOMY 12 Problem Set 4 – Due March 10, 2016 1) After
... upper right, lower left, or lower right?). Incidentally, this makes Type IIp supernovae useful standard candles. We don’t know their radius directly but can calculate it from the age of the supernova and its expansion rate (as determined by spectral line widths) and then calculate their luminosity, ...
... upper right, lower left, or lower right?). Incidentally, this makes Type IIp supernovae useful standard candles. We don’t know their radius directly but can calculate it from the age of the supernova and its expansion rate (as determined by spectral line widths) and then calculate their luminosity, ...
Stellar Death
... Must be less than 1.4 Msun, or they cannot be supported by electron degeneracy pressure ...
... Must be less than 1.4 Msun, or they cannot be supported by electron degeneracy pressure ...
Star Jeopardy Review #2
... At 8 solar masses a star will go through a violent ending, forming a Type II supernova and ending in a nuetron star or balck hole ...
... At 8 solar masses a star will go through a violent ending, forming a Type II supernova and ending in a nuetron star or balck hole ...
Background Science - Faulkes Telescope Project
... average, one supernova goes off every 50 years or so in our Galaxy. There are two main types of supernovae - Type Ia and II. Type II are the explosions of very massive stars with mass greater than 8 times the mass of the Sun. Type Ia are the explosions of stars similar in mass to the Sun, which have ...
... average, one supernova goes off every 50 years or so in our Galaxy. There are two main types of supernovae - Type Ia and II. Type II are the explosions of very massive stars with mass greater than 8 times the mass of the Sun. Type Ia are the explosions of stars similar in mass to the Sun, which have ...
Slide 1
... • The inward pressure is enormous, due to the high mass of the star. • There is nothing stopping the star from collapsing further; it does so very rapidly, in a giant implosion. (Don’t Write) As it continues to become more and more dense, the protons and electrons react with one another to become ne ...
... • The inward pressure is enormous, due to the high mass of the star. • There is nothing stopping the star from collapsing further; it does so very rapidly, in a giant implosion. (Don’t Write) As it continues to become more and more dense, the protons and electrons react with one another to become ne ...
Supernova
... • Iron atoms are reduced to individual protons, neutrons and electrons in a fraction of a second. • Collapse continues and individual protons and electrons are squeezed together to form neutrons and neutrinos. • In immense flood of neutrinos attempts to leave the core but cannot escape the incredibl ...
... • Iron atoms are reduced to individual protons, neutrons and electrons in a fraction of a second. • Collapse continues and individual protons and electrons are squeezed together to form neutrons and neutrinos. • In immense flood of neutrinos attempts to leave the core but cannot escape the incredibl ...
Supernova
A supernova is a stellar explosion that briefly outshines an entire galaxy, radiating as much energy as the Sun or any ordinary star is expected to emit over its entire life span, before fading from view over several weeks or months. The extremely luminous burst of radiation expels much or all of a star's material at a velocity of up to 7007300000000000000♠30,000 km/s (10% of the speed of light), driving a shock wave into the surrounding interstellar medium. This shock wave sweeps up an expanding shell of gas and dust called a supernova remnant. Supernovae are potentially strong galactic sources of gravitational waves. A great proportion of primary cosmic rays comes from supernovae.Supernovae are more energetic than novae. Nova means ""new"" in Latin, referring to what appears to be a very bright new star shining in the celestial sphere; the prefix ""super-"" distinguishes supernovae from ordinary novae, which are far less luminous. The word supernova was coined by Walter Baade and Fritz Zwicky in 1931. It is pronounced /ˌsuːpərnoʊvə/ with the plural supernovae /ˌsuːpərnoʊviː/ or supernovas (abbreviated SN, plural SNe after ""supernovae"").Supernovae can be triggered in one of two ways: by the sudden re-ignition of nuclear fusion in a degenerate star; or by the gravitational collapse of the core of a massive star. In the first case, a degenerate white dwarf may accumulate sufficient material from a companion, either through accretion or via a merger, to raise its core temperature, ignite carbon fusion, and trigger runaway nuclear fusion, completely disrupting the star. In the second case, the core of a massive star may undergo sudden gravitational collapse, releasing gravitational potential energy that can create a supernova explosion.The most recent directly observed supernova in the Milky Way was Kepler's Star of 1604 (SN 1604); remnants of two more recent supernovae have been found retrospectively. Observations in other galaxies indicate that supernovae should occur on average about three times every century in the Milky Way, and that any galactic supernova would almost certainly be observable in modern astronomical equipment. Supernovae play a significant role in enriching the interstellar medium with higher mass elements. Furthermore, the expanding shock waves from supernova explosions can trigger the formation of new stars.