How the Universe Works Extreme Stars Name 1. When a star dies
... 5. After the sun blasts away its outer layers, all that remains is an intensely hot, core called a (planetary nebula) (white dwarf) (pulsar). 6. At the core of a white dwarf astronomers believe lies a core of (iron) (nickel) (carbon). 7. Betelgeuse is (older) (younger) (the same age as) our sun. 8. ...
... 5. After the sun blasts away its outer layers, all that remains is an intensely hot, core called a (planetary nebula) (white dwarf) (pulsar). 6. At the core of a white dwarf astronomers believe lies a core of (iron) (nickel) (carbon). 7. Betelgeuse is (older) (younger) (the same age as) our sun. 8. ...
Stellar Evolution Slideshow
... only neutrons are left (Guess where the name “Neutron Stars” came from?) Also called Pulsars because they emit radio waves with incredible regularity. Appear to be rapidly rotating neutron star ...
... only neutrons are left (Guess where the name “Neutron Stars” came from?) Also called Pulsars because they emit radio waves with incredible regularity. Appear to be rapidly rotating neutron star ...
1 - Pitt County Schools
... Chapter 25 Concept Questions Name:_______________________________Date:___________________ 1. Absolute magnitude: 2. Apparent magnitude: 3. Big band theory: 4. Binary star: ...
... Chapter 25 Concept Questions Name:_______________________________Date:___________________ 1. Absolute magnitude: 2. Apparent magnitude: 3. Big band theory: 4. Binary star: ...
Comparing Earth, Sun and Jupiter
... smaller than this, the density would be >5.0x1010 kg/m3, and it would have to be a neutron star. b. How fast can a star rotate before it breaks up? Equate centripetal and gravitational accelerations: ...
... smaller than this, the density would be >5.0x1010 kg/m3, and it would have to be a neutron star. b. How fast can a star rotate before it breaks up? Equate centripetal and gravitational accelerations: ...
Supernovae Type II
... 8. The core will radiate away its huge energy content in neutrinos and the remnant core will settle down into a neutron star. The radius is something like 15 km, depending on initial core mass, but has a mass of 1.4 to about 3 M. ...
... 8. The core will radiate away its huge energy content in neutrinos and the remnant core will settle down into a neutron star. The radius is something like 15 km, depending on initial core mass, but has a mass of 1.4 to about 3 M. ...
Old Sample Exam #2
... a) oxygen b) iron c) hydrogen d) uranium e) helium _____ 5) Planetary nebulae are often shaped like a(n) a) hourglass b) Frisbee c) basketball d) coke can e) ice cream cone _____ 6) How long will Prox Centauri (M5 dwarf) spend on the main sequence? (years) a) 1000 b) 106 c) 109 d) 1012 e) 1015 _____ ...
... a) oxygen b) iron c) hydrogen d) uranium e) helium _____ 5) Planetary nebulae are often shaped like a(n) a) hourglass b) Frisbee c) basketball d) coke can e) ice cream cone _____ 6) How long will Prox Centauri (M5 dwarf) spend on the main sequence? (years) a) 1000 b) 106 c) 109 d) 1012 e) 1015 _____ ...
Supernovae, Neutron Stars, Black Holes
... neutron star located less than 400 light-years away from Earth. This star was previously detected by its Xray radiation, indicating a surface temperature around ...
... neutron star located less than 400 light-years away from Earth. This star was previously detected by its Xray radiation, indicating a surface temperature around ...
Planetary Configurations
... • Recall escape speed: • The Sch. Radius (RS) is the distance at which vesc=c for a BH: ...
... • Recall escape speed: • The Sch. Radius (RS) is the distance at which vesc=c for a BH: ...
chapter 18
... uranium to form lead, Pb. b) helium nuclei to form carbon nuclei. c) hydrogen nuclei to form helium nuclei. d) carbon nuclei to form magnesium nuclei. ...
... uranium to form lead, Pb. b) helium nuclei to form carbon nuclei. c) hydrogen nuclei to form helium nuclei. d) carbon nuclei to form magnesium nuclei. ...
Chapter 16
... The supernova explosion is caused when the overlying layers of the stellar atmosphere free-fall onto the core and literally bounce – off, creating a shock wave that blows off all the other overlying layers, in a spectacular explosion, that we know as a Supernova. The supernova explosion produces so ...
... The supernova explosion is caused when the overlying layers of the stellar atmosphere free-fall onto the core and literally bounce – off, creating a shock wave that blows off all the other overlying layers, in a spectacular explosion, that we know as a Supernova. The supernova explosion produces so ...
Document
... the center (core) of the star. • Gravity pulls the core of the star to a size smaller than the Earth’s diameter. • The core compresses so much that protons and electrons merge into neutrons, taking energy away from the core. • The core collapses, and the layers above fall rapidly toward the center, ...
... the center (core) of the star. • Gravity pulls the core of the star to a size smaller than the Earth’s diameter. • The core compresses so much that protons and electrons merge into neutrons, taking energy away from the core. • The core collapses, and the layers above fall rapidly toward the center, ...
Mission update
... correct for atmospheric effects, but this limits observations to parts of the sky that are near bright stars. ESO’s artificial star means that astronomers are no longer limited in this way. The high-power laser beam originates from a launching telescope on Yepun, the fourth 8.2 m Unit Telescope of t ...
... correct for atmospheric effects, but this limits observations to parts of the sky that are near bright stars. ESO’s artificial star means that astronomers are no longer limited in this way. The high-power laser beam originates from a launching telescope on Yepun, the fourth 8.2 m Unit Telescope of t ...
Lec 25.2- STELLAR EVOLUTION SUMMARY
... a binary star system, evidence for a black hole's existence could be acquired by studying its gravitational effects on its visible companion. In addition, theorists have concluded that a substantial amount of the matter transferred from the binary companion to the black hole should be converted into ...
... a binary star system, evidence for a black hole's existence could be acquired by studying its gravitational effects on its visible companion. In addition, theorists have concluded that a substantial amount of the matter transferred from the binary companion to the black hole should be converted into ...
The Life of a Star
... after the main-sequence stage. • This is a star that expands and cools because it has used up all of its hydrogen. • The center of the star shrinks, but the atmosphere gets very large. • The star may become a supergiant (100 times bigger than the sun). ...
... after the main-sequence stage. • This is a star that expands and cools because it has used up all of its hydrogen. • The center of the star shrinks, but the atmosphere gets very large. • The star may become a supergiant (100 times bigger than the sun). ...
The Evolution of Massive Stars
... debris from a supernova in about 1680: today the brightest radio source in the sky ...
... debris from a supernova in about 1680: today the brightest radio source in the sky ...
Everything Under and Over The Stars
... If the sun went nova, what would happen to the solar system? There was a recent supernova called SN1993J in a star system, which is not mentioned. The powerful shockwave traveled at 44 million mph, but 5 years later it slowed down because of drag caused by particles. There has been a supernova in t ...
... If the sun went nova, what would happen to the solar system? There was a recent supernova called SN1993J in a star system, which is not mentioned. The powerful shockwave traveled at 44 million mph, but 5 years later it slowed down because of drag caused by particles. There has been a supernova in t ...
1. Compute the deflection angle of a star whose light... limb of the Sun. Also compute the deflection angle of...
... 1. Compute the deflection angle of a star whose light just grazes the limb of the Sun. Also compute the deflection angle of a star whose light just grazes the limb of a 1.4M neutron star, if the neutron star was at the same distance from the Earth as the Sun. State assumptions. 2. Use the Plummer p ...
... 1. Compute the deflection angle of a star whose light just grazes the limb of the Sun. Also compute the deflection angle of a star whose light just grazes the limb of a 1.4M neutron star, if the neutron star was at the same distance from the Earth as the Sun. State assumptions. 2. Use the Plummer p ...
Astronomy - The-A-List
... Cepheid variable stars expand and contract in a repeating cycle of size changes Change in size is comparable with change in brightness ...
... Cepheid variable stars expand and contract in a repeating cycle of size changes Change in size is comparable with change in brightness ...
The Pulsar “Lighthouse”
... • Energy is emitted by charged particles accelerated along poles of magnetic field. • Magnetic field is tilted relative to spin axis. • Collapsed star spins rapidly. • conservation of angular momentum. • What is diameter? • Star’s surface cannot spin faster than speed of light. 2πR / t < c Î R < ct ...
... • Energy is emitted by charged particles accelerated along poles of magnetic field. • Magnetic field is tilted relative to spin axis. • Collapsed star spins rapidly. • conservation of angular momentum. • What is diameter? • Star’s surface cannot spin faster than speed of light. 2πR / t < c Î R < ct ...
Protostar, Initial mass, Main Sequence
... Larger stars continue to fuse elements all the way to iron. Beyond iron, energy is no longer released. A star that still has more than 1.44 solar masses will end its life in a supernova explosion, leaving a remnant billions of times denser than a white dwarf. o Up to 3 solar masses - star will produ ...
... Larger stars continue to fuse elements all the way to iron. Beyond iron, energy is no longer released. A star that still has more than 1.44 solar masses will end its life in a supernova explosion, leaving a remnant billions of times denser than a white dwarf. o Up to 3 solar masses - star will produ ...
G030485-00 - DCC
... Star Life • Once fuel is burned up (core is made of Iron), nuclear fusion ceases and the forces of gravity take over to initiate collapse • Providing the star is large enough (>1.5 times the mass of the sun) the death will follow a Supernovae sequence LIGO-G030485-00-D ...
... Star Life • Once fuel is burned up (core is made of Iron), nuclear fusion ceases and the forces of gravity take over to initiate collapse • Providing the star is large enough (>1.5 times the mass of the sun) the death will follow a Supernovae sequence LIGO-G030485-00-D ...
MBuzaTalk2
... else( kinetic effects, nuclear forces, degeneracy's, electro-magnetic) Normal stars are fighting with Hydrodynamic pressure, and radiation pressure. But in by-products we see both electron and neutron degeneracy’s, along with neutrino pressures. Where density is the dominating factor. Mainly, White ...
... else( kinetic effects, nuclear forces, degeneracy's, electro-magnetic) Normal stars are fighting with Hydrodynamic pressure, and radiation pressure. But in by-products we see both electron and neutron degeneracy’s, along with neutrino pressures. Where density is the dominating factor. Mainly, White ...
The life cycle of a star
... When extremely large stars die, the resulting core is called a neutron star An extremely dense star made of neutrons ...
... When extremely large stars die, the resulting core is called a neutron star An extremely dense star made of neutrons ...
The HR Diagram and Stars Worksheet
... 2. Use your book to add the following information to the H-R diagram. 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 Gia ...
... 2. Use your book to add the following information to the H-R diagram. 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 Gia ...
Pulsar
A pulsar (short for pulsating radio star) is a highly magnetized, rotating neutron star that emits a beam of electromagnetic radiation. This radiation can only be observed when the beam of emission is pointing toward Earth, much the way a lighthouse can only be seen when the light is pointed in the direction of an observer, and is responsible for the pulsed appearance of emission. Neutron stars are very dense, and have short, regular rotational periods. This produces a very precise interval between pulses that range roughly from milliseconds to seconds for an individual pulsar. Pulsars are believed to be one of the candidates of high and ultra-high energy astroparticles (see also Centrifugal mechanism of acceleration).The precise periods of pulsars make them useful tools. Observations of a pulsar in a binary neutron star system were used to indirectly confirm the existence of gravitational radiation. The first extrasolar planets were discovered around a pulsar, PSR B1257+12. Certain types of pulsars rival atomic clocks in their accuracy in keeping time.
