Blowing Bubbles in Space: The Birth and Death of Practically
... • The intriguing result implies that the massive star's explosion has produced a shape similar to what is seen in some planetary nebulae associated with lower mass stars. • SMC=190 kly away, so this field of view spans about 150 light-years. ...
... • The intriguing result implies that the massive star's explosion has produced a shape similar to what is seen in some planetary nebulae associated with lower mass stars. • SMC=190 kly away, so this field of view spans about 150 light-years. ...
1. Neutron stars 2. Black holes
... neutron star material would weigh 100 million tons. Gravity extremely powerful; you’d weigh a lot more on this star! Carry strong magnetic fields. Spin very fast! (a consequence of the conservation of angular momentum) ...
... neutron star material would weigh 100 million tons. Gravity extremely powerful; you’d weigh a lot more on this star! Carry strong magnetic fields. Spin very fast! (a consequence of the conservation of angular momentum) ...
HW8 - UCSB Physics
... For S0-2, with P = 14.5 years, a = ((4.1 × 106 )(14.52 ))1/3 = 952 AU . For S0-19, with P = 37.3 years, a = ((4.1 × 106 )(37.32 ))1/3 = 1790 AU . (b) To calculate the angular size of the semi-major axis as seen from Earth, use the small-angle formula, D= ...
... For S0-2, with P = 14.5 years, a = ((4.1 × 106 )(14.52 ))1/3 = 952 AU . For S0-19, with P = 37.3 years, a = ((4.1 × 106 )(37.32 ))1/3 = 1790 AU . (b) To calculate the angular size of the semi-major axis as seen from Earth, use the small-angle formula, D= ...
Solar Nebula Theory
... 1. All planets orbit the Sun in the same direction as the Sun’s rotation 2. All planetary orbits are confined to the same general plane 3. Terrestrial planets form near the Sun, Jovian planets further out ...
... 1. All planets orbit the Sun in the same direction as the Sun’s rotation 2. All planetary orbits are confined to the same general plane 3. Terrestrial planets form near the Sun, Jovian planets further out ...
Stellar Death
... If the core is hot enough, its radiation will make the ejected outer layers glow ...
... If the core is hot enough, its radiation will make the ejected outer layers glow ...
Orbits and Dark Matter, the Center of the Milky Way
... Dark – it doesn’t produce light (any kind) Does have mass, produces gravity Nature is unknown Might be normal matter in a form that doesn’t emit much light – very small and dim star, little black holes • More likely it is elementary particles other than normal matter ...
... Dark – it doesn’t produce light (any kind) Does have mass, produces gravity Nature is unknown Might be normal matter in a form that doesn’t emit much light – very small and dim star, little black holes • More likely it is elementary particles other than normal matter ...
Astroparticle physics 1. stellar astrophysics and solar neutrinos
... CNO chains and He burning • Hydrogen burning can also proceed through the temperature sensitive CNO chain ...
... CNO chains and He burning • Hydrogen burning can also proceed through the temperature sensitive CNO chain ...
Approaching a black hole
... Black hole deflects nearby objects from straight path Accretion of surrounding matter onto black holes generates huge amount of heat and radiation ...
... Black hole deflects nearby objects from straight path Accretion of surrounding matter onto black holes generates huge amount of heat and radiation ...
Types of Stars - WordPress.com
... • The main sequence is a narrow band of stars on the H-R diagram that runs diagonally from the upper left ( bright, hot stars) to the lower right ( dim, cool stars). About 90 percent of stars are on the main sequence, including the Sun. • A star’s position on the main sequence is determined by its i ...
... • The main sequence is a narrow band of stars on the H-R diagram that runs diagonally from the upper left ( bright, hot stars) to the lower right ( dim, cool stars). About 90 percent of stars are on the main sequence, including the Sun. • A star’s position on the main sequence is determined by its i ...
3 - MrFuglestad
... Red Giant – Hydrogen fusion ends in the core, but continues in a layer just outside the Helium core. The outer layers of the star expand because the area of Hydrogen being fused pushes the outer layers out. These outer layers cool and become less luminous. Therefore there is a change in size and co ...
... Red Giant – Hydrogen fusion ends in the core, but continues in a layer just outside the Helium core. The outer layers of the star expand because the area of Hydrogen being fused pushes the outer layers out. These outer layers cool and become less luminous. Therefore there is a change in size and co ...
PH109 Exploring the Universe, Test 3, Fall 2001 Please indicate the
... 32. About how old do astronomers think the sun is a) 10 billion years, b) 5 billion years, c) 10 million years, d) 5 millions years 33. A measurement of the parallax of a star allows us directly to determine the star's a) rotation rate, b) temperature, c) distance, d) age 34. The stars located in th ...
... 32. About how old do astronomers think the sun is a) 10 billion years, b) 5 billion years, c) 10 million years, d) 5 millions years 33. A measurement of the parallax of a star allows us directly to determine the star's a) rotation rate, b) temperature, c) distance, d) age 34. The stars located in th ...
September Evening Skies
... Vega, Capella, Altair, Antares, Fomalhaut, and Deneb. In addition to stars, other objects that should be visible to the unaided eye are labeled on the map. The double star (Dbl) at the bend of the handle of the Big Dipper is easily detected. Much more difficult is the double star near Vega in Lyra. ...
... Vega, Capella, Altair, Antares, Fomalhaut, and Deneb. In addition to stars, other objects that should be visible to the unaided eye are labeled on the map. The double star (Dbl) at the bend of the handle of the Big Dipper is easily detected. Much more difficult is the double star near Vega in Lyra. ...
The Life Cycle of a Star Webquest
... Drag the view finder on a black hole and then click BEGIN YOUR VOAGE. Journey to either one of the black hole choices. Which one did you choose? ___________________ ...
... Drag the view finder on a black hole and then click BEGIN YOUR VOAGE. Journey to either one of the black hole choices. Which one did you choose? ___________________ ...
Star in a Box Worksheet - Beginning with solutions
... B. By adjusting the mass of the star in the “Star Properties” you can explore the evolution of different stars. 1. Where do the different mass stars lie on the main sequence? S maller stars towards the bottom right, more massive stars towards the upper left. 2. List the different final stages of ...
... B. By adjusting the mass of the star in the “Star Properties” you can explore the evolution of different stars. 1. Where do the different mass stars lie on the main sequence? S maller stars towards the bottom right, more massive stars towards the upper left. 2. List the different final stages of ...
The Hidden Lives of Galaxies NSTA 2001
... • Under collapse, protons and electrons combine to form neutrons. • 10 Km across Black Hole (If mass of core > 5 x Solar) • Not even compacted neutrons can support weight of very massive stars. ...
... • Under collapse, protons and electrons combine to form neutrons. • 10 Km across Black Hole (If mass of core > 5 x Solar) • Not even compacted neutrons can support weight of very massive stars. ...
life cycle of stars
... • Under collapse, protons and electrons combine to form neutrons. • 10 Km across Black Hole (If mass of core > 5 x Solar) • Not even compacted neutrons can support weight of very massive stars. ...
... • Under collapse, protons and electrons combine to form neutrons. • 10 Km across Black Hole (If mass of core > 5 x Solar) • Not even compacted neutrons can support weight of very massive stars. ...
Stages in the Life of a Star
... supernova explosion. Surface gravity so strong that nothing can escape (not even light!) within a certain distance from mass point. ...
... supernova explosion. Surface gravity so strong that nothing can escape (not even light!) within a certain distance from mass point. ...
Astronomy
... Learning Target: Be able to explain what causes various types of stellar explosions Question of the day: Once you have your test back, use your book, notes and each other to correctly describe star formation, using terms such as nuclear fusion, protostar, Ttauri star, interstellar cloud, fragmenting ...
... Learning Target: Be able to explain what causes various types of stellar explosions Question of the day: Once you have your test back, use your book, notes and each other to correctly describe star formation, using terms such as nuclear fusion, protostar, Ttauri star, interstellar cloud, fragmenting ...
Life Cycles of Stars
... • Remaining core of a supergiant that was more than 40 times the size of our Sun • The core of the supergiant, after a supernova, is so dense that its gravitational pull sucks in space, time, light and matter • Thought to be at the centre of all galaxies ...
... • Remaining core of a supergiant that was more than 40 times the size of our Sun • The core of the supergiant, after a supernova, is so dense that its gravitational pull sucks in space, time, light and matter • Thought to be at the centre of all galaxies ...
White dwarfs - University of Toronto
... rotate rapidly, giving off radiation that can be observed from earth as pulses which are seen many times per second. Most stars rotate at some speed. When the fuel depleted core of the star collapses, angular momentum is conserved, and because the radius of the neutron star is so small, the rate of ...
... rotate rapidly, giving off radiation that can be observed from earth as pulses which are seen many times per second. Most stars rotate at some speed. When the fuel depleted core of the star collapses, angular momentum is conserved, and because the radius of the neutron star is so small, the rate of ...
The Life of a Star
... Low-mass stars cool down and swell up into a red giant. Outer layers drift away and the star shrinks to become a white dwarf which will cool and fade away. High-mass stars swells into a red supergiant which undergoes a supernova. This leaves behind either a neutron star or a black hole depending on ...
... Low-mass stars cool down and swell up into a red giant. Outer layers drift away and the star shrinks to become a white dwarf which will cool and fade away. High-mass stars swells into a red supergiant which undergoes a supernova. This leaves behind either a neutron star or a black hole depending on ...
Energy and Mass - Cornell Astronomy
... During the Big Bang, the density was so high that Earth-size mass Mini-BH could have formed – Each less than a centimeter in size. (Stephen Hawking) ...
... During the Big Bang, the density was so high that Earth-size mass Mini-BH could have formed – Each less than a centimeter in size. (Stephen Hawking) ...
Star in a Box Worksheet - Beginning
... ✰ Launch Star in a Box and open the lid. The main plot is a Hertzsprung-Russell diagram. On the right, the information panel allows comparisons between the radius, surface temperature, luminosity and mass of the star relative to the Sun. The starting parameters are for a star like the Sun. ...
... ✰ Launch Star in a Box and open the lid. The main plot is a Hertzsprung-Russell diagram. On the right, the information panel allows comparisons between the radius, surface temperature, luminosity and mass of the star relative to the Sun. The starting parameters are for a star like the Sun. ...
Cygnus X-1
Cygnus X-1 (abbreviated Cyg X-1) is a well-known galactic X-ray source, thought to be a black hole, in the constellation Cygnus. It was discovered in 1964 during a rocket flight and is one of the strongest X-ray sources seen from Earth, producing a peak X-ray flux density of 6977229999999999999♠2.3×10−23 Wm−2 Hz−1 (7003230000000000000♠2.3×103 Jansky). Cygnus X-1 was the first X-ray source widely accepted to be a black hole and it remains among the most studied astronomical objects in its class. The compact object is now estimated to have a mass about 14.8 times the mass of the Sun and has been shown to be too small to be any known kind of normal star, or other likely object besides a black hole. If so, the radius of its event horizon is about 7004440000000000000♠44 km.Cygnus X-1 belongs to a high-mass X-ray binary system about 7019574266339685654♠6070 ly from the Sun that includes a blue supergiant variable star designated HDE 226868 which it orbits at about 0.2 AU, or 20% of the distance from the Earth to the Sun. A stellar wind from the star provides material for an accretion disk around the X-ray source. Matter in the inner disk is heated to millions of degrees, generating the observed X-rays. A pair of jets, arranged perpendicular to the disk, are carrying part of the energy of the infalling material away into interstellar space.This system may belong to a stellar association called Cygnus OB3, which would mean that Cygnus X-1 is about five million years old and formed from a progenitor star that had more than 7001400000000000000♠40 solar masses. The majority of the star's mass was shed, most likely as a stellar wind. If this star had then exploded as a supernova, the resulting force would most likely have ejected the remnant from the system. Hence the star may have instead collapsed directly into a black hole.Cygnus X-1 was the subject of a friendly scientific wager between physicists Stephen Hawking and Kip Thorne in 1975, with Hawking betting that it was not a black hole. He conceded the bet in 1990 after observational data had strengthened the case that there was indeed a black hole in the system. This hypothesis has not been confirmed due to a lack of direct observation but has generally been accepted from indirect evidence.