Powerpoint
... 2. If you are in freefall, you are also weightless. Einstein says these are equivalent. So in freefall, the light and the ball also travel in straight lines. 3. Now imagine two people in freefall on Earth, passing a ball back and forth. From their perspective, they pass the ball in a straight line. ...
... 2. If you are in freefall, you are also weightless. Einstein says these are equivalent. So in freefall, the light and the ball also travel in straight lines. 3. Now imagine two people in freefall on Earth, passing a ball back and forth. From their perspective, they pass the ball in a straight line. ...
Notes: 3.5 STAR EVOLUTION Name: ______ Star
... Ø “Evolve” or “Evolution” means to CHANGE. notes. Construct Ø All stars change into different STAGES or phases throughout their quiz questions life. using this Ø What a star ends as depends on its MASS. information. Write Ø A low mass star will evolve DIFFERENTLY than a high mass star. the quest ...
... Ø “Evolve” or “Evolution” means to CHANGE. notes. Construct Ø All stars change into different STAGES or phases throughout their quiz questions life. using this Ø What a star ends as depends on its MASS. information. Write Ø A low mass star will evolve DIFFERENTLY than a high mass star. the quest ...
Homework Problems for Quiz 1 – AY 5 – Spring 2013
... 1. If the Earth’s spin axis was not tilted with respect to the Earth’s orbital plane (around the Sun), which of the following would be true, which false?: T The number of daylight hours in a day would not change through the year. F The length of a day would increase from 24 hours to 365 days F The c ...
... 1. If the Earth’s spin axis was not tilted with respect to the Earth’s orbital plane (around the Sun), which of the following would be true, which false?: T The number of daylight hours in a day would not change through the year. F The length of a day would increase from 24 hours to 365 days F The c ...
Cosmology 20B Homework 2 solutions
... 4b. You are looking at two hot objects that are glowing because of their temperature. One glows blue and the other glows red. Which one is hotter? Explain how you know this using the Wien’s law equation for black body radiation. Wien’s law tells us that a black body will radiate more of its energy a ...
... 4b. You are looking at two hot objects that are glowing because of their temperature. One glows blue and the other glows red. Which one is hotter? Explain how you know this using the Wien’s law equation for black body radiation. Wien’s law tells us that a black body will radiate more of its energy a ...
Sagittarius - columbusastronomy
... Constellation: Carina 2nd brightest star in the night sky Magnitude: -0.72 Type: supergiant, spectral type F Color: white to the naked eye Temperature: 7,350 K Distance: 310 light years RA: 6h 24m ...
... Constellation: Carina 2nd brightest star in the night sky Magnitude: -0.72 Type: supergiant, spectral type F Color: white to the naked eye Temperature: 7,350 K Distance: 310 light years RA: 6h 24m ...
Life cycle of a star
... Neutron stars are really dense. They have between 1.4 and 3 times as much mass as the Sun, but are compressed into a ball with a radius of about 10 km. A thimbleful of a neutron star would weigh more than 100 million tons on earth ...
... Neutron stars are really dense. They have between 1.4 and 3 times as much mass as the Sun, but are compressed into a ball with a radius of about 10 km. A thimbleful of a neutron star would weigh more than 100 million tons on earth ...
Powerpoint for today
... Millisecond pulsars: periods of 1 to a few msec. Probably accreted matter from a binary companion that made it spin faster. Gamma-ray Bursts: some pulsars produce bursts of gamma-rays, called Soft Gamma-Ray Repeaters or SGRs ...
... Millisecond pulsars: periods of 1 to a few msec. Probably accreted matter from a binary companion that made it spin faster. Gamma-ray Bursts: some pulsars produce bursts of gamma-rays, called Soft Gamma-Ray Repeaters or SGRs ...
Sequence of Stars Notes
... Becomes either a black hole or a neutron star (depending on mass of original star) ...
... Becomes either a black hole or a neutron star (depending on mass of original star) ...
Chapter 30 Section 2 Handout
... The band that runs diagonally through the Hertzsprung-Russell diagram and extends from cool, dim, red stars at the lower right to hot, bright, blue stars at the upper left. ...
... The band that runs diagonally through the Hertzsprung-Russell diagram and extends from cool, dim, red stars at the lower right to hot, bright, blue stars at the upper left. ...
Lecture notes 17: Active Galaxies
... while the radio loud quasars are found in elliptical galaxies. A large percentage of quasars have close lying neighbors, seem perturbed in some way, or seem strange in some way. Note also that there are very few near lying quasars. Seyfert and radio galaxies Seyfert galaxies are named for Carl K. Se ...
... while the radio loud quasars are found in elliptical galaxies. A large percentage of quasars have close lying neighbors, seem perturbed in some way, or seem strange in some way. Note also that there are very few near lying quasars. Seyfert and radio galaxies Seyfert galaxies are named for Carl K. Se ...
1 - Physics
... • B) both take the same length of time to form • C) mass of the sun • D) the formation rates will depend on the rotation of the gas clouds 7. Of the following, which is the most important factor that causes fusion in the cores of stars to be highly dependant on the temperature of the core? • A) beca ...
... • B) both take the same length of time to form • C) mass of the sun • D) the formation rates will depend on the rotation of the gas clouds 7. Of the following, which is the most important factor that causes fusion in the cores of stars to be highly dependant on the temperature of the core? • A) beca ...
Constellation, Star, and Deep Sky Object
... system with a white dwarf and a supergiant which loses its outer gas layers to the white dwarf. A second, less common occurrence is a binary system with two white dwarfs that merge, sending the mass over the threshold. Type II – When a massive star consumes all of its fusion material and ends up wit ...
... system with a white dwarf and a supergiant which loses its outer gas layers to the white dwarf. A second, less common occurrence is a binary system with two white dwarfs that merge, sending the mass over the threshold. Type II – When a massive star consumes all of its fusion material and ends up wit ...
Life Cycle of Stars Powerpoint
... a black hole. • No light, radio waves, or any form of radiation can get out of a black hole. Astronomers can not see black holes directly. • Astronomers can detect black holes indirectly – Gas pulled in rotates so fast that it heats up and gives off X-rays – Scientists can calculate the mass of a bl ...
... a black hole. • No light, radio waves, or any form of radiation can get out of a black hole. Astronomers can not see black holes directly. • Astronomers can detect black holes indirectly – Gas pulled in rotates so fast that it heats up and gives off X-rays – Scientists can calculate the mass of a bl ...
Life Cycle of a Star
... • The core shrinks and the outer parts expand • It turns red as it is cooling • This phase will last until the star exhausts its remaining fuel. • The pressure of the nuclear reaction is not strong enough to equalize the force of gravity so the star will collapse. ...
... • The core shrinks and the outer parts expand • It turns red as it is cooling • This phase will last until the star exhausts its remaining fuel. • The pressure of the nuclear reaction is not strong enough to equalize the force of gravity so the star will collapse. ...
Chapter 1 Vocabulary – The Puzzled of Matter
... Nebula – a large cloud of gas and dust spread out over a large volume of space Protostar – a contracting nebula with enough mass to form a star Planetary Nebula – a glowing cloud of gas surrounding a dying low-mass star Supernova – an enormous explosion in which the byproducts of a supergiant star’s ...
... Nebula – a large cloud of gas and dust spread out over a large volume of space Protostar – a contracting nebula with enough mass to form a star Planetary Nebula – a glowing cloud of gas surrounding a dying low-mass star Supernova – an enormous explosion in which the byproducts of a supergiant star’s ...
Ch16: The Milky Way
... Sun’s orbital motion (radius and velocity) tells us mass within Sun’s orbit: 1.0 x 1011 MSun The total amount of light suggests ~ few x 109 Msun Dark matter! ...
... Sun’s orbital motion (radius and velocity) tells us mass within Sun’s orbit: 1.0 x 1011 MSun The total amount of light suggests ~ few x 109 Msun Dark matter! ...
Ourdraft
... So this is what research scientists (and research students and teachers!) do. We have all these questions, and start figuring out ways to answer them. In the case of astronomy, the only phenomenon we have to observe and measure is the light that comes from the object. The distances are so far that w ...
... So this is what research scientists (and research students and teachers!) do. We have all these questions, and start figuring out ways to answer them. In the case of astronomy, the only phenomenon we have to observe and measure is the light that comes from the object. The distances are so far that w ...
Lecture 14 - Center for Astrophysics and Space Astronomy CASA
... Huge amounts of energy are released as the material swirls in. Material get hot. Really hot. Like a million degrees Kelvin. Emits ultraviolet and x-rays. We can see these accretion disks with x-ray telescopes! ...
... Huge amounts of energy are released as the material swirls in. Material get hot. Really hot. Like a million degrees Kelvin. Emits ultraviolet and x-rays. We can see these accretion disks with x-ray telescopes! ...
Life Cycle of a Star
... This is when _________ is eventually released in a powerful explosion. It can light up the sky for _________. The supernova then becomes either a __________ star or a ________ _________. A ________ _______ spins rapidly giving off radio waves. A ________ _______ is a hole that readily attracts ...
... This is when _________ is eventually released in a powerful explosion. It can light up the sky for _________. The supernova then becomes either a __________ star or a ________ _________. A ________ _______ spins rapidly giving off radio waves. A ________ _______ is a hole that readily attracts ...
Document
... Stage 4 (high mass) A supernova is an exploding star that throws its outer layer of dust and gas into space, leaving behind a very dense core called a neutron star. ...
... Stage 4 (high mass) A supernova is an exploding star that throws its outer layer of dust and gas into space, leaving behind a very dense core called a neutron star. ...
Name
... For main sequence stars, the general rule is that the lower the surface temperature, … A) the greater the size of the core B) the greater the masses of the stars. C) the less luminous are the stars. D) the greater the diameter of the star E) the shorter the lifetime on the main sequence 40) What is ...
... For main sequence stars, the general rule is that the lower the surface temperature, … A) the greater the size of the core B) the greater the masses of the stars. C) the less luminous are the stars. D) the greater the diameter of the star E) the shorter the lifetime on the main sequence 40) What is ...
Name - MIT
... For main sequence stars, the general rule is that the lower the surface temperature, … A) the greater the size of the core B) the greater the masses of the stars. C) the less luminous are the stars. D) the greater the diameter of the star E) the shorter the lifetime on the main sequence 40) What is ...
... For main sequence stars, the general rule is that the lower the surface temperature, … A) the greater the size of the core B) the greater the masses of the stars. C) the less luminous are the stars. D) the greater the diameter of the star E) the shorter the lifetime on the main sequence 40) What is ...
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.