Astronomy PPT
... When you look at white light through a glass prism, you see a rainbow of colors called a spectrum – including red, orange, yellow, green, blue, indigo, and violet. ...
... When you look at white light through a glass prism, you see a rainbow of colors called a spectrum – including red, orange, yellow, green, blue, indigo, and violet. ...
Galaxies - C. Levesque
... this creates a black hole • A black hole is an object so dense that not even light can escape it. • We can find black holes by looking for objects in space ...
... this creates a black hole • A black hole is an object so dense that not even light can escape it. • We can find black holes by looking for objects in space ...
Sample final exam
... to be. To help with your classification, this galaxy emits more radiation, from gamma rays to radio waves, than the Milky Way does. Explain why this type of galaxy would be expected to emit such extra radiation. 24. Below are some characteristics of stars. Your task is to separate them into two cate ...
... to be. To help with your classification, this galaxy emits more radiation, from gamma rays to radio waves, than the Milky Way does. Explain why this type of galaxy would be expected to emit such extra radiation. 24. Below are some characteristics of stars. Your task is to separate them into two cate ...
From Earth to the Galaxies
... an Australian pen pal a photograph of your garden in the spring, but to save on postage, you send your letter by ship. Your letter takes two months to reach your friend. When she opens the envelope, she sees the photograph showing your garden as it was two months earlier when you first snapped the p ...
... an Australian pen pal a photograph of your garden in the spring, but to save on postage, you send your letter by ship. Your letter takes two months to reach your friend. When she opens the envelope, she sees the photograph showing your garden as it was two months earlier when you first snapped the p ...
Extragalactic Astrophysics 1 AA 2011-2012 Prof. LA Antonelli
... for open and globular clusters more precise distance determinations are possible, because all the stars of the same cluster have about the same age, chemical composition, and distance. optimal agreement of isochrones with HR diagram can be found ...
... for open and globular clusters more precise distance determinations are possible, because all the stars of the same cluster have about the same age, chemical composition, and distance. optimal agreement of isochrones with HR diagram can be found ...
NIGHTWATCH SHEET May 2017 - National Museums Liverpool
... Although there are only two planets (which are fantastic objects to observe) there are other things to look at. If you find Leo, the star to the left is called Denebola, to the left of there lies the Virgo cluster. (Marked with an ‘X’ on the map). This is a rich area of galaxies which form part of t ...
... Although there are only two planets (which are fantastic objects to observe) there are other things to look at. If you find Leo, the star to the left is called Denebola, to the left of there lies the Virgo cluster. (Marked with an ‘X’ on the map). This is a rich area of galaxies which form part of t ...
a description of planets and stars you may see
... planetary nebula in the constellation Vulpecula, at a distance of about 1,360 light years. This object was the first planetary nebula to be discovered (in 1764 by Charles Messier). This planetary nebula appears to be shaped like an hourglass. It is believed that the age of the nebula is some 10,000 ...
... planetary nebula in the constellation Vulpecula, at a distance of about 1,360 light years. This object was the first planetary nebula to be discovered (in 1764 by Charles Messier). This planetary nebula appears to be shaped like an hourglass. It is believed that the age of the nebula is some 10,000 ...
E:\2012-2013\SSU\PHS 207spring 2013\3rd test 4
... to assigned essay questions on Milky Way other galaxies, the Universe & Cosmology.docx 4 of 5 pages 5. What evidence do we have that particuliar galaxies are powered by black holes at their ...
... to assigned essay questions on Milky Way other galaxies, the Universe & Cosmology.docx 4 of 5 pages 5. What evidence do we have that particuliar galaxies are powered by black holes at their ...
THE BIG BANG - Dublin City Schools
... deuterium. Since stars could not have produced the deuterium, it must have been created either very early in the formation of the galaxy or even before! ...
... deuterium. Since stars could not have produced the deuterium, it must have been created either very early in the formation of the galaxy or even before! ...
word document - FacStaff Home Page for CBU
... In Section C we study multiple star systems to see what additional information we can obtain when two (or more) stars orbit each other. In Section D we consider the things other than stars that are out there: interstellar atoms, dust, and nebulae. These are related to the birth and death of stars co ...
... In Section C we study multiple star systems to see what additional information we can obtain when two (or more) stars orbit each other. In Section D we consider the things other than stars that are out there: interstellar atoms, dust, and nebulae. These are related to the birth and death of stars co ...
Set 1
... determined a central disk luminosity density of 1208 L pc-2 and a disk scale length Rd=2.7 kpc. If Ro=8 kpc estimate the projected surface brightness K (in mags ...
... determined a central disk luminosity density of 1208 L pc-2 and a disk scale length Rd=2.7 kpc. If Ro=8 kpc estimate the projected surface brightness K (in mags ...
The Milky Way Galaxy is on a Collision course with Andromeda
... The Milky Way Galaxy is on a Collision course with Andromeda galaxy what will happen? The collision will cause huge tides of stars that toss them thousands of light years in every direction! Those are called tidal tails. When they are thrown our solar system is thrown as well! Currently we are on th ...
... The Milky Way Galaxy is on a Collision course with Andromeda galaxy what will happen? The collision will cause huge tides of stars that toss them thousands of light years in every direction! Those are called tidal tails. When they are thrown our solar system is thrown as well! Currently we are on th ...
Brichler-powerpoint
... • Parallax – an apparent shift in the position of an object when viewed from different locations. • Using parallax and trigonometry, astronomers can find distances to stars. • Closer stars seem to move more than distant stars as the earth revolves around the sun. ...
... • Parallax – an apparent shift in the position of an object when viewed from different locations. • Using parallax and trigonometry, astronomers can find distances to stars. • Closer stars seem to move more than distant stars as the earth revolves around the sun. ...
star
... generates energy through nuclear fusion in its core. Astronomers use units called light-‐years to measure the distance between stars. A light-‐year is the distance that light travels in a vac ...
... generates energy through nuclear fusion in its core. Astronomers use units called light-‐years to measure the distance between stars. A light-‐year is the distance that light travels in a vac ...
ppt
... • Many stars visible to the naked eye have an absolute magnitude which is capable of casting shadows from a distance of 10 parsecs; Rigel (-7.0), Deneb (-7.2), Naos ...
... • Many stars visible to the naked eye have an absolute magnitude which is capable of casting shadows from a distance of 10 parsecs; Rigel (-7.0), Deneb (-7.2), Naos ...
Life Cycle of Stars
... lower right when plotted according to luminosity and surface temperature on the Hertzsprung-Russell diagram ...
... lower right when plotted according to luminosity and surface temperature on the Hertzsprung-Russell diagram ...
![Module 4.1 - The Scale of the Universe [slide 1] We now turn to](http://s1.studyres.com/store/data/002846843_1-9e0ec9d1a2abbbab3c0d406694bfc4e2-300x300.png)
Module 4.1 - The Scale of the Universe [slide 1] We now turn to
... [slide 6] There were two prominent schools of thought on this. One, led by Allen Sandage, the disciple of Hubble, pushed for the lower values, around 50 kilometers per second per megaparsec. The other one, led by Gerard de Vaucouleurs and his collaborators in Texas and elsewhere, pushed for twice th ...
... [slide 6] There were two prominent schools of thought on this. One, led by Allen Sandage, the disciple of Hubble, pushed for the lower values, around 50 kilometers per second per megaparsec. The other one, led by Gerard de Vaucouleurs and his collaborators in Texas and elsewhere, pushed for twice th ...
Galaxies
... Light from moving objects will appear to have different wavelengths depending on the relative motion of the source and the observer. Observers looking at an object that is moving away from them see light that has a longer wavelength than it had when it was emitted (a redshift), while observers looki ...
... Light from moving objects will appear to have different wavelengths depending on the relative motion of the source and the observer. Observers looking at an object that is moving away from them see light that has a longer wavelength than it had when it was emitted (a redshift), while observers looki ...
Constellations
... during specific seasons This is due to earth’s rotation around sun and tilt of the earth Lyra in summer ...
... during specific seasons This is due to earth’s rotation around sun and tilt of the earth Lyra in summer ...
12/08/14-- Student ID ______ TA Name
... 10. (1 pt) Energy gets through this region via the “random walk.” D 11. (1 pt) Magnetic fields from Sun’s interior poke out in these photospheric dark regions. A 12. (1 pt) The “boiling” movement of the gas transports energy through this region. E 13. (1 pt) The only region where fusion occurs. C 14 ...
... 10. (1 pt) Energy gets through this region via the “random walk.” D 11. (1 pt) Magnetic fields from Sun’s interior poke out in these photospheric dark regions. A 12. (1 pt) The “boiling” movement of the gas transports energy through this region. E 13. (1 pt) The only region where fusion occurs. C 14 ...
lecture25
... Radar ranging - good for measuring distances in the solar system (up to about 0.0001 light years) Parallax - good for measuring distances to a few hundred light years ...
... Radar ranging - good for measuring distances in the solar system (up to about 0.0001 light years) Parallax - good for measuring distances to a few hundred light years ...
about Stars
... Magnitudes • Astronomers use “magnitudes” to describe how bright stars are • Small numbers are brighter, large numbers fainter. • The brightest naked-eye stars are around magnitude zero. • The faintest naked-eye stars are around magnitude six • 5 magnitudes are a factor of 100 in brightness (a 6th ...
... Magnitudes • Astronomers use “magnitudes” to describe how bright stars are • Small numbers are brighter, large numbers fainter. • The brightest naked-eye stars are around magnitude zero. • The faintest naked-eye stars are around magnitude six • 5 magnitudes are a factor of 100 in brightness (a 6th ...
Galaxies - sciencejedi.com
... brighter the star, the longer the pulsation period. These stars are called Cepheid Variables. • This is one of the most important discoveries ever made in astronomy. It means that if you simply measure the period of pulsation of a Cepheid, then you know what its absolute brightness is. If you then m ...
... brighter the star, the longer the pulsation period. These stars are called Cepheid Variables. • This is one of the most important discoveries ever made in astronomy. It means that if you simply measure the period of pulsation of a Cepheid, then you know what its absolute brightness is. If you then m ...
Chapter 19 Notes Stars Stars are bright balls of gas that are trillions
... e. Stars are classified according to how hot they are. i. Temperature differences in stars result in color differences that you can see. ii. Blue stars are the hottest, red stars are the coolest. f. Apparent Magnitude i. The brightness of the star as seen from Earth. ii. Some stars are brighter than ...
... e. Stars are classified according to how hot they are. i. Temperature differences in stars result in color differences that you can see. ii. Blue stars are the hottest, red stars are the coolest. f. Apparent Magnitude i. The brightness of the star as seen from Earth. ii. Some stars are brighter than ...
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.