Galaxies - Indiana University Astronomy
... For Wednesday, April 8 Part 7: Supernova in M51 At least two supernovae have been detected in recent years in the nearby Whirlpool Galaxy, Messier 51. M51 is located at a distance of about 31 million light years (about 10 megaparsecs) in the direction of the constellation Canes Venatici. Stars can ...
... For Wednesday, April 8 Part 7: Supernova in M51 At least two supernovae have been detected in recent years in the nearby Whirlpool Galaxy, Messier 51. M51 is located at a distance of about 31 million light years (about 10 megaparsecs) in the direction of the constellation Canes Venatici. Stars can ...
How do stars form?
... How do we know the timing? • Age of Sun via chemical composition and known rate of fusion: about 5 Ga ...
... How do we know the timing? • Age of Sun via chemical composition and known rate of fusion: about 5 Ga ...
Supernovae Type II
... the remainder resulting from subsequent steps. 5. The collapse ends when the core reaches nuclear density. Actually, the density exceeds nuclear briefly by what is estimated to be a factor of 2 to 3. ...
... the remainder resulting from subsequent steps. 5. The collapse ends when the core reaches nuclear density. Actually, the density exceeds nuclear briefly by what is estimated to be a factor of 2 to 3. ...
Investigating Supernova Remnants - Chandra X
... ~50,000 years it is no longer visible. A white dwarf cannot create (Chandra, Hubble) internal pressure and its complete collapse is only prevented by quantum mechanics. Two electrons with the same “spin” are not allowed to occupy the same energy state. Since there are only two ways an electron can s ...
... ~50,000 years it is no longer visible. A white dwarf cannot create (Chandra, Hubble) internal pressure and its complete collapse is only prevented by quantum mechanics. Two electrons with the same “spin” are not allowed to occupy the same energy state. Since there are only two ways an electron can s ...
Other Galaxies, their Distances, and the Expansion of the Universe
... Brian Schmidt Adam Riess Type 1a Supernovae show that the Universe is accelerating! ...
... Brian Schmidt Adam Riess Type 1a Supernovae show that the Universe is accelerating! ...
About the Universe The Universe is everything that exists, including
... of the Universe, but nobody knows exactly how big it really is. However, astronomers have seen that the galaxies inside it are slowly moving away from each other. This must mean that the Universe is getting bigger all the time. Staring into space Staring into space is something people do all the tim ...
... of the Universe, but nobody knows exactly how big it really is. However, astronomers have seen that the galaxies inside it are slowly moving away from each other. This must mean that the Universe is getting bigger all the time. Staring into space Staring into space is something people do all the tim ...
Endpoints of stellar evolution
... But why would a collapsing core explode ? a) CO or ONeMg cores that accrete matter from a companion star can get beyond the Chandrasekhar limit: Further collapse heats star and CO or ONeMg burning ignites explosively Whole star explodes – no remnant b) collapsing Fe core in massive star Fe cannot ig ...
... But why would a collapsing core explode ? a) CO or ONeMg cores that accrete matter from a companion star can get beyond the Chandrasekhar limit: Further collapse heats star and CO or ONeMg burning ignites explosively Whole star explodes – no remnant b) collapsing Fe core in massive star Fe cannot ig ...
19Nov_2014
... electrons merge into neutrons, taking energy away from the core • The core collapses, and the layers above fall rapidly toward the center, where they collide with the core material and “bounce” • The “bounced material collides with the remaining infalling gas, raising temperatures high enough to set ...
... electrons merge into neutrons, taking energy away from the core • The core collapses, and the layers above fall rapidly toward the center, where they collide with the core material and “bounce” • The “bounced material collides with the remaining infalling gas, raising temperatures high enough to set ...
The HR Diagram and Stars Worksheet
... a. Page 622 – Add the Spectral Class below the temperatures. b. Page 626 – Use colored pencils to add and label the band that represents Main Sequence stars. c. Page 626 – Use colored pencils to label the following areas: Blue Giants, Red Super Giants, Red Giants, Red Dwarfs, White Dwarfs d. Page 62 ...
... a. Page 622 – Add the Spectral Class below the temperatures. b. Page 626 – Use colored pencils to add and label the band that represents Main Sequence stars. c. Page 626 – Use colored pencils to label the following areas: Blue Giants, Red Super Giants, Red Giants, Red Dwarfs, White Dwarfs d. Page 62 ...
Lec 25.2- STELLAR EVOLUTION SUMMARY
... At first, it contracts rapidly because energy thereby released is easily radiated outward. Eventually, the cloud grows dense enough to become opaque to (block) its own radiation. This causes the cloud to heat up, slowing down but not stopping its contraction. The cloud's continued collapse leads to ...
... At first, it contracts rapidly because energy thereby released is easily radiated outward. Eventually, the cloud grows dense enough to become opaque to (block) its own radiation. This causes the cloud to heat up, slowing down but not stopping its contraction. The cloud's continued collapse leads to ...
Slide 1
... INTRODUCTION On the evening of November 11, 1572, Danish astronomer Tycho Brahe noticed a new, very luminous object in the constellation Cassiopeia. This object became bright enough (as bright as Venus!) to be observed for several weeks during the day. Over the next year and a half, it dimmed by a ...
... INTRODUCTION On the evening of November 11, 1572, Danish astronomer Tycho Brahe noticed a new, very luminous object in the constellation Cassiopeia. This object became bright enough (as bright as Venus!) to be observed for several weeks during the day. Over the next year and a half, it dimmed by a ...
Ginger Dublin 6th Grade Science
... Black Holes • Formed when a supernova explodes causing its core to collapse. • So dense that even light can’t escape its gravity. ...
... Black Holes • Formed when a supernova explodes causing its core to collapse. • So dense that even light can’t escape its gravity. ...
Life Cycle of Stars - Faulkes Telescope Project
... is not strong enough to equalize the inward gravitational force, so the star begins to collapse. Most stars (including our Sun) will blow away their outer layers to form a planetary nebula; their cores remain behind and live as White Dwarfs. No nuclear reactions occur in a white dwarf so they spend ...
... is not strong enough to equalize the inward gravitational force, so the star begins to collapse. Most stars (including our Sun) will blow away their outer layers to form a planetary nebula; their cores remain behind and live as White Dwarfs. No nuclear reactions occur in a white dwarf so they spend ...
Explosion and remnants of massive stars
... is sufficient to overcome the binding energy of the white dwarf in the explosion. Therefore no stellar remnant is left. The lightcurve of a Type Ia supernova is powered by the radioactive decay of the 56 Ni formed in the explosion. The nickel mass is a substantial fraction of the mass of the white d ...
... is sufficient to overcome the binding energy of the white dwarf in the explosion. Therefore no stellar remnant is left. The lightcurve of a Type Ia supernova is powered by the radioactive decay of the 56 Ni formed in the explosion. The nickel mass is a substantial fraction of the mass of the white d ...
Constellation
... pearls' surrounding an Exploding Star Two decades ago, astronomers spotted one of the brightest exploding stars in more than 400 years. This image shows the entire region around the supernova. The most prominent feature in the image is a ring with dozens of bright spots. A shock wave of material unl ...
... pearls' surrounding an Exploding Star Two decades ago, astronomers spotted one of the brightest exploding stars in more than 400 years. This image shows the entire region around the supernova. The most prominent feature in the image is a ring with dozens of bright spots. A shock wave of material unl ...
stars - allenscience
... Supernova The largest stars shed their layers in a massive explosion called a Supernova. The end result is also a planetary nebula. Supernova are so bright that they can outshine an entire galaxy for a period of time. ...
... Supernova The largest stars shed their layers in a massive explosion called a Supernova. The end result is also a planetary nebula. Supernova are so bright that they can outshine an entire galaxy for a period of time. ...
Yes, we are all star dust. Even Gary!
... implodes, which is followed by a large rebound explosion (supernova) > 8.0 = same as above, much faster, but implosion does not end as explosion. Instead it keeps collapsing and becoming denser until a black hole is formed. ...
... implodes, which is followed by a large rebound explosion (supernova) > 8.0 = same as above, much faster, but implosion does not end as explosion. Instead it keeps collapsing and becoming denser until a black hole is formed. ...
Review 1 Solutions
... 6. A quasar with a redshift of one (z = 1) is receding from us at the speed of light. F 7. Cepheid variable stars and Type Ia supernovae are examples of “standard candles” which have a known luminosity and thereby allow astronomers to determine precise distances to galaxies outside our own. T ...
... 6. A quasar with a redshift of one (z = 1) is receding from us at the speed of light. F 7. Cepheid variable stars and Type Ia supernovae are examples of “standard candles” which have a known luminosity and thereby allow astronomers to determine precise distances to galaxies outside our own. T ...
... Meteorites contain clear evidence that isotopes with short half lives (as short as 100,000 years) were present in the cloud of gas and dust (the called solar nebula) from which the Sun and planets formed. Supernovae, the powerful explosions of spent stars, produce elements, including short-lived rad ...
Astr40 HWIII(new) - Empyrean Quest Publishers
... 19. Higher mass White Dwarfs are ___________ than lower mass. A. larger B. smaller C. the same same size 20. A White Dwarf cannot be more massive than A. the sun. B. 1.4 solar masses. C. Jupiter. 21. A white dwarf in a companion sitiuation may gain enough mass to get hot enough for a sudden nuclear ...
... 19. Higher mass White Dwarfs are ___________ than lower mass. A. larger B. smaller C. the same same size 20. A White Dwarf cannot be more massive than A. the sun. B. 1.4 solar masses. C. Jupiter. 21. A white dwarf in a companion sitiuation may gain enough mass to get hot enough for a sudden nuclear ...
stellar remenants
... it doesn’t accumulate too much mass. • If the mass is over the Chandrasekhar –Limit, it will explode. ...
... it doesn’t accumulate too much mass. • If the mass is over the Chandrasekhar –Limit, it will explode. ...
White dwarfs that crossed the Chandrasekhar limit
... invisible companion, circling along with it around their common centre of mass. Based on these observations, he calculated the period to be around 50 years and mass almost as much as the Sun (0.98 M). This invisible companion was named Sirius B and it remained invisible for the next two decades. In ...
... invisible companion, circling along with it around their common centre of mass. Based on these observations, he calculated the period to be around 50 years and mass almost as much as the Sun (0.98 M). This invisible companion was named Sirius B and it remained invisible for the next two decades. In ...
History of supernova observation
The known history of supernova observation goes back to 185 CE, when, supernova SN 185 appeared, the oldest appearance of a supernova recorded by humankind. Several additional supernovae within the Milky Way galaxy have been recorded since that time, with SN 1604 being the most recent supernova to be observed in this galaxy.Since the development of the telescope, the field of supernova discovery has expanded to other galaxies. These occurrences provide important information on the distances of galaxies. Successful models of supernova behavior have also been developed, and the role of supernovae in the star formation process is now increasingly understood.