AGN-Hubble
... You must use nearby galaxies to calibrate distance indicators that can be seen across the Universe. ...
... You must use nearby galaxies to calibrate distance indicators that can be seen across the Universe. ...
Other Galaxies, their Distances, and the Expansion of the Universe
... These are images obtained by my team with the Spitzer Space Telescope ...
... These are images obtained by my team with the Spitzer Space Telescope ...
Outline 8: History of the Universe and Solar System
... http://www.cbsnews.com/8301-205_162-57520513/hubble-looks-back13.2-billion-years-in-deepest-view-yet/?tag=cbsContent;cbsCarousel ...
... http://www.cbsnews.com/8301-205_162-57520513/hubble-looks-back13.2-billion-years-in-deepest-view-yet/?tag=cbsContent;cbsCarousel ...
Which of the following is the best description of an Sc galaxy? A) a
... The Virgo Cluster of galaxies is receding from us at about 1500 km/sec. How does its distance compare with the diameter of the Milky Way galaxy? A) its distance is about ten times the diameter of the Milky Way B) its distance is about 50 times the diameter of the Milky Way C) its distance is about 5 ...
... The Virgo Cluster of galaxies is receding from us at about 1500 km/sec. How does its distance compare with the diameter of the Milky Way galaxy? A) its distance is about ten times the diameter of the Milky Way B) its distance is about 50 times the diameter of the Milky Way C) its distance is about 5 ...
Scientific Results Summary
... A lot of telescope time at Subaru is dedicated to looking at stars to assess their different stages of formation and evolution. Scientists at Subaru have pierced through a dusty stellar nursery of a Class O protostar located 500 light years away and captured the earliest and most detailed view of a ...
... A lot of telescope time at Subaru is dedicated to looking at stars to assess their different stages of formation and evolution. Scientists at Subaru have pierced through a dusty stellar nursery of a Class O protostar located 500 light years away and captured the earliest and most detailed view of a ...
AS 60 - Astronomy of the Americas
... a. As you watch it over the course of a year, an approaching galaxy will appear to grow larger in angular size on the sky b. Spectral lines of elements will be observed in the galaxy’s spectrum at greater wavelengths than those for the same elements in the lab if a galaxy is receding from us c. Spec ...
... a. As you watch it over the course of a year, an approaching galaxy will appear to grow larger in angular size on the sky b. Spectral lines of elements will be observed in the galaxy’s spectrum at greater wavelengths than those for the same elements in the lab if a galaxy is receding from us c. Spec ...
Distant galaxies and quasars The ages of things Light
... • This has only become clear in recent years with Hubble Space Telescope deep images • It is consistent with the idea that galaxies have formed from the merger of sub-units ...
... • This has only become clear in recent years with Hubble Space Telescope deep images • It is consistent with the idea that galaxies have formed from the merger of sub-units ...
Post-class version
... Clusters of galaxies are the largest gravitationally bound structures. They are grouped into superclusters. Superclusters line up in filaments, which are separated by empty spaces or voids. ...
... Clusters of galaxies are the largest gravitationally bound structures. They are grouped into superclusters. Superclusters line up in filaments, which are separated by empty spaces or voids. ...
Star Groups and Big Bang Power Point
... Over half of all observed stars form multiple-star systems. Binary stars are pairs of stars that revolve around each other and are held together by gravity. The center of mass, or barycenter, is somewhere between the two stars. ...
... Over half of all observed stars form multiple-star systems. Binary stars are pairs of stars that revolve around each other and are held together by gravity. The center of mass, or barycenter, is somewhere between the two stars. ...
EXERCISES: Set 2 of 4 Q1: The absolute magnitude of the Sun in
... The brightness of the night sky at a dark astronomical site is 22 magnitudes per square arcsec in the V band. (a) At what distances would: (i) a star like the Sun, (ii) a globular cluster, (iii) a galaxy like the Milky Way be as bright as the background sky? You can assume that in all three cases th ...
... The brightness of the night sky at a dark astronomical site is 22 magnitudes per square arcsec in the V band. (a) At what distances would: (i) a star like the Sun, (ii) a globular cluster, (iii) a galaxy like the Milky Way be as bright as the background sky? You can assume that in all three cases th ...
Week 5 (10/16) – Quiz #11
... the wavelength of peak radiation bear an inverse relation to each other B. The luminosity of a black body is proportional to its temperature raised to the fourth power C. Atoms are capable of absorbing and re-emitting photons D. The energy of a photon is given by the formula: E = mc2 ...
... the wavelength of peak radiation bear an inverse relation to each other B. The luminosity of a black body is proportional to its temperature raised to the fourth power C. Atoms are capable of absorbing and re-emitting photons D. The energy of a photon is given by the formula: E = mc2 ...
ONLINE practice exam
... 2. A supernova goes off in a galaxy whose cosmological redshift is z =0.2. From its maximum brightness, astronomers determine that it is located at a distance of 1000 Mpc. (a) What is the observed wavelength of the HI spectral line from this galaxy? (The rest wavelength is 21.1cm) (b) Use this info ...
... 2. A supernova goes off in a galaxy whose cosmological redshift is z =0.2. From its maximum brightness, astronomers determine that it is located at a distance of 1000 Mpc. (a) What is the observed wavelength of the HI spectral line from this galaxy? (The rest wavelength is 21.1cm) (b) Use this info ...
Sample Exam 3
... B) Most of the planets orbit much farther from their stars than in the Solar System. C) Massive planets orbiting much closer to their stars than in the Solar System. D) Mostly low-mass objects that would probably be too small to be called planets in the Solar System 4) SETI experiments are currently ...
... B) Most of the planets orbit much farther from their stars than in the Solar System. C) Massive planets orbiting much closer to their stars than in the Solar System. D) Mostly low-mass objects that would probably be too small to be called planets in the Solar System 4) SETI experiments are currently ...
Linking Asteroids and Meteorites through Reflectance Spectroscopy
... • The value of 6 solar masses per solar luminosity tells us that most of the matter is dimmer than the Sun out to the Sun’s orbit • Mass-to-Light ratio of our Sun is 1 solar mass per solar luminosity • So most matter is dimmer than the Sun ...
... • The value of 6 solar masses per solar luminosity tells us that most of the matter is dimmer than the Sun out to the Sun’s orbit • Mass-to-Light ratio of our Sun is 1 solar mass per solar luminosity • So most matter is dimmer than the Sun ...
Milky Way
... would have sitting inside a disk of stars. – Consistent with the Sun towards an edge ...
... would have sitting inside a disk of stars. – Consistent with the Sun towards an edge ...
Black Hole
... •There are many galaxies in the universe, and our Another galaxy , The galaxy, the Milky Way Canis Major Dwarf, was found by German galaxy, has many solar Astronomers on November systems and planets in it. 10, 2010. This is currently the closest galaxy to our ...
... •There are many galaxies in the universe, and our Another galaxy , The galaxy, the Milky Way Canis Major Dwarf, was found by German galaxy, has many solar Astronomers on November systems and planets in it. 10, 2010. This is currently the closest galaxy to our ...
Jeopardy Questions
... Q: How do black holes and neutron stars form? A: When a massive star has iron at its core, and can no longer fuse atoms to create energy, gravitational forces take over and the core collapses into either a neutron star or a black hole, depending on if its mass can be supported by ...
... Q: How do black holes and neutron stars form? A: When a massive star has iron at its core, and can no longer fuse atoms to create energy, gravitational forces take over and the core collapses into either a neutron star or a black hole, depending on if its mass can be supported by ...
The Milky Way Galaxy
... • The Milky Way galaxy is home to 400 billion stars and our own Sun and Solar System. • It is a barred spiral galaxy. • Scientists think the centre of the galaxy contains a super massive black hole. • The Milky Way is full of dust, gas and stars. • The Milky Way, along with everything else, is ...
... • The Milky Way galaxy is home to 400 billion stars and our own Sun and Solar System. • It is a barred spiral galaxy. • Scientists think the centre of the galaxy contains a super massive black hole. • The Milky Way is full of dust, gas and stars. • The Milky Way, along with everything else, is ...
Galaxies - Where Science Meets Life
... Spiral Spiral-shaped Central bulge with arms extending outward. Lots of gas and dust. Many established stars. ...
... Spiral Spiral-shaped Central bulge with arms extending outward. Lots of gas and dust. Many established stars. ...
ISP 205 Review Questions, Week 13
... velocity of recession in the previous question. If the value of Hubble's constant were H0 = 22 km/sec per million light years, how far away is the galaxy from us? Hint... Solve for the distance d in the equation v = H0d , where v is the velocity you found in the previous question. Answer: d = 15,000 ...
... velocity of recession in the previous question. If the value of Hubble's constant were H0 = 22 km/sec per million light years, how far away is the galaxy from us? Hint... Solve for the distance d in the equation v = H0d , where v is the velocity you found in the previous question. Answer: d = 15,000 ...
PHYSICS 113 Assignment #9 SOLUTIONS Chapter 17 13. Starting
... particles in the gas causes the gas to radiate energy at all wavelengths in the EM spectrum. It is this radiation from the hot gas that we see as the tremendous outpouring of energy from quasars. ...
... particles in the gas causes the gas to radiate energy at all wavelengths in the EM spectrum. It is this radiation from the hot gas that we see as the tremendous outpouring of energy from quasars. ...
Document
... a spiral arm, 30,000 light-years from the center It takes 250 Million years for the Sun to complete one orbit ...
... a spiral arm, 30,000 light-years from the center It takes 250 Million years for the Sun to complete one orbit ...
Big Bang Theory Scientific origin of the Universe
... How are distances in the universe measured? • Light-year – the distance that light travels in one year going at the speed of light • Speed of light – 300,000 km/second • Speed of light – 186, 000 miles/second • 9.5 trillion km in one year • Closest star (other that sun) is Proxima Centauri is 4.3 l ...
... How are distances in the universe measured? • Light-year – the distance that light travels in one year going at the speed of light • Speed of light – 300,000 km/second • Speed of light – 186, 000 miles/second • 9.5 trillion km in one year • Closest star (other that sun) is Proxima Centauri is 4.3 l ...
Review 1 Solutions
... 9. What is spherical aberration, and how is it corrected? Spherical aberration is a problem in reflecting telescopes that use spherical mirrors—light does not reflect to a single focus point for this shape. It can be corrected by using parabolic mirrors instead of spherical ones. 10. Why do stars tw ...
... 9. What is spherical aberration, and how is it corrected? Spherical aberration is a problem in reflecting telescopes that use spherical mirrors—light does not reflect to a single focus point for this shape. It can be corrected by using parabolic mirrors instead of spherical ones. 10. Why do stars tw ...
Galaxy
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A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas and dust, and dark matter. The word galaxy is derived from the Greek galaxias (γαλαξίας), literally ""milky"", a reference to the Milky Way. Galaxies range in size from dwarfs with just a few thousand (103) stars to giants with one hundred trillion (1014) stars, each orbiting their galaxy's own center of mass. Galaxies are categorized according to their visual morphology, including elliptical, spiral, and irregular. Many galaxies are thought to have black holes at their active centers. The Milky Way's central black hole, known as Sagittarius A*, has a mass four million times greater than our own Sun. As of July 2015, EGSY8p7 is the oldest and most distant galaxy with a light travel distance of 13.2 billion light-years from Earth, and observed as it existed 570 million years after the Big Bang. Previously, as of May 2015, EGS-zs8-1 was the most distant known galaxy, estimated to have a light travel distance of 13.1 billion light-years away and to have 15% of the mass of the Milky Way.Approximately 170 billion (1.7 × 1011) to 200 billion (2.0 × 1011) galaxies exist in the observable universe. Most of the galaxies are 1,000 to 100,000 parsecs in diameter and usually separated by distances on the order of millions of parsecs (or megaparsecs). The space between galaxies is filled with a tenuous gas with an average density less than one atom per cubic meter. The majority of galaxies are gravitationally organized into associations known as galaxy groups, clusters, and superclusters. At the largest scale, these associations are generally arranged into sheets and filaments that are surrounded by immense voids.