32Brightness
... source, where discrete colors are absorbed by atoms – From emission and absorption lines, get composition of objects and also their temperature ...
... source, where discrete colors are absorbed by atoms – From emission and absorption lines, get composition of objects and also their temperature ...
Powerpoint for today
... Old idea: they form from a single large collapsing cloud of gas, like a star but on a much larger scale. New idea: observations indicate that "sub-galactic" fragments of size several hundred parsecs were the first things to form. Hundreds might merge to form a galaxy. ...
... Old idea: they form from a single large collapsing cloud of gas, like a star but on a much larger scale. New idea: observations indicate that "sub-galactic" fragments of size several hundred parsecs were the first things to form. Hundreds might merge to form a galaxy. ...
Chapter 10
... 6. What is the observational evidence that something strange is happening in the nucleus of our Galaxy, and what is the probable explanation? 7. Describe the factors involved in galactic formation, including the role of collisions between galaxies. 8. Be able to identify a galaxy by its shape, accor ...
... 6. What is the observational evidence that something strange is happening in the nucleus of our Galaxy, and what is the probable explanation? 7. Describe the factors involved in galactic formation, including the role of collisions between galaxies. 8. Be able to identify a galaxy by its shape, accor ...
Hubble`s Law Notes
... Hubble & The Big Bang • Ok so we know that Hubble discovered most galaxies are redshifted but what does this have to do with the big bang? • Well, if Hubble discovered that most galaxies are moving away from us, that means the Universe is expanding. If the Universe is expanding, it must have starte ...
... Hubble & The Big Bang • Ok so we know that Hubble discovered most galaxies are redshifted but what does this have to do with the big bang? • Well, if Hubble discovered that most galaxies are moving away from us, that means the Universe is expanding. If the Universe is expanding, it must have starte ...
PowerPoint - Chandra X
... ESO 137-001: X-ray Tails from Galaxy Plunging into the Core of the Galaxy Cluster A3627 ...
... ESO 137-001: X-ray Tails from Galaxy Plunging into the Core of the Galaxy Cluster A3627 ...
Stars
... COMPOSITION OF STARS ______ 5. The band of colors produced when white light passes through a prism is a(n) a. color wheel. b. emission line. c. ultraviolet light. d. spectrum. ______ 6. A hot, solid object gives off a(n) a. continuous spectrum. b. absorption spectrum. c. emission line. d. partial sp ...
... COMPOSITION OF STARS ______ 5. The band of colors produced when white light passes through a prism is a(n) a. color wheel. b. emission line. c. ultraviolet light. d. spectrum. ______ 6. A hot, solid object gives off a(n) a. continuous spectrum. b. absorption spectrum. c. emission line. d. partial sp ...
AN INTRODUCTION TO ASTRONOMY Dr. Uri Griv •
... Explanation: How could a galaxy become shaped like a ring? The rim of the blue galaxy pictured on the right is an immense ring-like structure 150,000 light years in diameter composed of newly formed, extremely bright, massive stars. That galaxy, AM 0644-741, is known as a ring galaxy and was caused ...
... Explanation: How could a galaxy become shaped like a ring? The rim of the blue galaxy pictured on the right is an immense ring-like structure 150,000 light years in diameter composed of newly formed, extremely bright, massive stars. That galaxy, AM 0644-741, is known as a ring galaxy and was caused ...
Galaxies - schoolphysics
... the trip across our galaxy. This means that the light that we see from the stars on the other side of the galaxy started out on its journey over eighty thousand years ago! If we could shrink the whole solar system out to the orbit of Pluto to the size of a grain of sand 1mm across then on the same s ...
... the trip across our galaxy. This means that the light that we see from the stars on the other side of the galaxy started out on its journey over eighty thousand years ago! If we could shrink the whole solar system out to the orbit of Pluto to the size of a grain of sand 1mm across then on the same s ...
Interpreting the HR diagram of stellar clusters
... attention to the upper end of the main sequence. Here, for example, is the colormagnitude diagram for the Pleiades: ...
... attention to the upper end of the main sequence. Here, for example, is the colormagnitude diagram for the Pleiades: ...
Galaxies – Island universes
... • Many have later infalling matter which has been pulled on by nearby mass and thus doesn’t fall straight in. It settles into a rotating disk, arranging itself into a flat, roughly circularly orbiting plane of material • This material gradually condenses enough to initiate star formation. Then super ...
... • Many have later infalling matter which has been pulled on by nearby mass and thus doesn’t fall straight in. It settles into a rotating disk, arranging itself into a flat, roughly circularly orbiting plane of material • This material gradually condenses enough to initiate star formation. Then super ...
Luminosity Classes
... These are called Variable Stars. The change in luminosity is due to a change in size. (Though temperature changes too.) ...
... These are called Variable Stars. The change in luminosity is due to a change in size. (Though temperature changes too.) ...
Wadhurst Astronomical Society Newsletter May 2017
... GAIA will map I billion stars in 3D, which is about 1% of our Milky Way stars. Its accuracy will be about 40 times as great as the Hipparchus mission and 40 million measurements will be taken each day. The CCD array measures half a square meter and contains a billion pixels. During its planned life ...
... GAIA will map I billion stars in 3D, which is about 1% of our Milky Way stars. Its accuracy will be about 40 times as great as the Hipparchus mission and 40 million measurements will be taken each day. The CCD array measures half a square meter and contains a billion pixels. During its planned life ...
The Universe - Solon City Schools
... solar masses will use up all of its hydrogen and helium and become a white dwarf. Stars that are between 1.4-3.0 solar masses will produce a Type I supernova, leaving a neutron star. Stars that are greater than 3.0 solar masses produce a Type II supernova, collapsing and producing a black hole. ...
... solar masses will use up all of its hydrogen and helium and become a white dwarf. Stars that are between 1.4-3.0 solar masses will produce a Type I supernova, leaving a neutron star. Stars that are greater than 3.0 solar masses produce a Type II supernova, collapsing and producing a black hole. ...
Charcteristic of Stars Powerpoint C
... equal 1 solar radius. • In comparison white dwarfs are about the same size as Earth and would equal 0.01 solar radius. Supergiants can have sizes up to 1,000 solar radii. ...
... equal 1 solar radius. • In comparison white dwarfs are about the same size as Earth and would equal 0.01 solar radius. Supergiants can have sizes up to 1,000 solar radii. ...
Unit 11 Vocabulary
... known to exist in the Universe. They can form from the gravitational collapse of a massive star after a supernova. 9. black dwarf star - A black dwarf is created when a white dwarf star becomes too cool and can no longer create large amounts of heat and light. The star will dim and become black. We ...
... known to exist in the Universe. They can form from the gravitational collapse of a massive star after a supernova. 9. black dwarf star - A black dwarf is created when a white dwarf star becomes too cool and can no longer create large amounts of heat and light. The star will dim and become black. We ...
Microlensing in NZ
... Impact parameter = umin × rE (at observer plane) = 5.8 Earth radii Direction = 12º west of north (Second solution to the west) ...
... Impact parameter = umin × rE (at observer plane) = 5.8 Earth radii Direction = 12º west of north (Second solution to the west) ...
Integrative Studies 410 Our Place in the Universe
... • measure distances to other galaxies using the periodluminosity relationship for Cepheid variables • Type I supernovae also used to measure distances – Predictable luminosity – a standard candle ...
... • measure distances to other galaxies using the periodluminosity relationship for Cepheid variables • Type I supernovae also used to measure distances – Predictable luminosity – a standard candle ...
ASTR 1020 FINAL EXAM STUDY GUIDE
... 1) As no spacecraft has ventured into the interior of the Sun, what evidence then do we have to support our current ideas about the solar interior? 2) What processes are involved in the sunspot cycle? 3) What are coronal holes? 4) Which forms of light are primarily emitted from the chromosphere and ...
... 1) As no spacecraft has ventured into the interior of the Sun, what evidence then do we have to support our current ideas about the solar interior? 2) What processes are involved in the sunspot cycle? 3) What are coronal holes? 4) Which forms of light are primarily emitted from the chromosphere and ...
Tour of the Universe
... about 4.6x10^9 years ago. The high temperature close to the Sun provide the compounds with high condensation temperature to remain solid, that hold the particles that make up these planets together: Mercury, Venus, Earth and Mars. ● The planets that are farther away from the Sun are formed from c ...
... about 4.6x10^9 years ago. The high temperature close to the Sun provide the compounds with high condensation temperature to remain solid, that hold the particles that make up these planets together: Mercury, Venus, Earth and Mars. ● The planets that are farther away from the Sun are formed from c ...
Volcanoes and Igneous Activity Earth - Chapter 4
... the needs of other instructors who rely on these materials. ...
... the needs of other instructors who rely on these materials. ...
CO 2 Cycle
... • Spiral or Elliptical? – What conditions in the protogalactic clouds determine whether it’s a spiral or elliptical? ...
... • Spiral or Elliptical? – What conditions in the protogalactic clouds determine whether it’s a spiral or elliptical? ...
What Does an Astronomer Do?
... 186,000 miles per second, a light-year is a huge distance! The universe is made up of an uncountable number of galaxies. Only the nearest objects in our solar system can be reached by spacecraft in a reasonable length of time. Information about all the other objects in the universe comes from observ ...
... 186,000 miles per second, a light-year is a huge distance! The universe is made up of an uncountable number of galaxies. Only the nearest objects in our solar system can be reached by spacecraft in a reasonable length of time. Information about all the other objects in the universe comes from observ ...
Homework #2
... 1) Supernovae are very bright, but do you think that they pose a biological hazard? Consider a typical (Type II) supernova with Lpeak = 109 solar luminosities. (This kind comes from the death of a massive star and is more common than the brighter Type Ia supernovae discussed so far in class). At wha ...
... 1) Supernovae are very bright, but do you think that they pose a biological hazard? Consider a typical (Type II) supernova with Lpeak = 109 solar luminosities. (This kind comes from the death of a massive star and is more common than the brighter Type Ia supernovae discussed so far in class). At wha ...
Basic Observations of Stars
... Remember: constellations are of no real physical significance mere chance patterns. They change slowly as individual stars move through space. To see this, visit http://www.astronexus.com/node/28 and look at the Animations/Travels through time under 3D Universe! ...
... Remember: constellations are of no real physical significance mere chance patterns. They change slowly as individual stars move through space. To see this, visit http://www.astronexus.com/node/28 and look at the Animations/Travels through time under 3D Universe! ...
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are ""close enough"" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances and methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung.