Studies of young stellar objects (25+5)
... • They are believed to be the “base” of the large scale outflow phenomena like the bipolar outflows and HH systems. • They are almost always found in the case of lowmass protostars, but rarely in high-mass protostars. ...
... • They are believed to be the “base” of the large scale outflow phenomena like the bipolar outflows and HH systems. • They are almost always found in the case of lowmass protostars, but rarely in high-mass protostars. ...
Lecture 17: General Relativity and Black Holes
... (a) Stars near the center of the galaxy have very small orbits and very high orbital speeds (b) X-ray flares detected from Sag A* have very short variation timescales. (c) Infrared observations indicate there is a bar at the galactic center. (d) is a very strong source of X-ray and synchrotron emiss ...
... (a) Stars near the center of the galaxy have very small orbits and very high orbital speeds (b) X-ray flares detected from Sag A* have very short variation timescales. (c) Infrared observations indicate there is a bar at the galactic center. (d) is a very strong source of X-ray and synchrotron emiss ...
Xtra_credit_MC_chapt_13−15_2014.txt Xtra_credit_MC_chapt_13
... point for stars with INITIAL masses GREATER than about ________ times the mass of the Sun: a) 15 b) 16 to 18 c) 20 d) 25 e) 30 2) When at a point in space "everything breaks down", for example there is: infinite mass density, infinite curvature, ... then this point is called a: a) white dwarf b) neu ...
... point for stars with INITIAL masses GREATER than about ________ times the mass of the Sun: a) 15 b) 16 to 18 c) 20 d) 25 e) 30 2) When at a point in space "everything breaks down", for example there is: infinite mass density, infinite curvature, ... then this point is called a: a) white dwarf b) neu ...
universe - Global Change
... in effective temperature of only one hundred millionth of a degree. This clumpiness would have been necessary for the big bang to produce galaxies, since a perfectly uniform explosion would not ...
... in effective temperature of only one hundred millionth of a degree. This clumpiness would have been necessary for the big bang to produce galaxies, since a perfectly uniform explosion would not ...
Discovery of the Kuiper Belt
... brightness and the distance. We also calculated the number of similar objects to be found if we could continue our survey over the whole sky in the plane of the solar system. By the end of the night, we knew that we had found a solar system object far beyond Neptune and more distant than any seen be ...
... brightness and the distance. We also calculated the number of similar objects to be found if we could continue our survey over the whole sky in the plane of the solar system. By the end of the night, we knew that we had found a solar system object far beyond Neptune and more distant than any seen be ...
Journey Through the Universe By Brian Fontaine
... It is believed that our solar system began similar to a galaxy…(or a hurricane). A cloud of gas (nebula) collapsed to form the sun, which began rotating. As time when on, the heavier dust fell toward the sun, creating the rocky inner planets, and the ...
... It is believed that our solar system began similar to a galaxy…(or a hurricane). A cloud of gas (nebula) collapsed to form the sun, which began rotating. As time when on, the heavier dust fell toward the sun, creating the rocky inner planets, and the ...
Galileo Galilei (1564-1642) - Sunshine Coast Centre RASC
... telescopes were then focused on the discovery ...
... telescopes were then focused on the discovery ...
Active Galactic Nuclei
... they have very high luminosities ~ 1011Lo which is 1000 times more luminous than a normal spiral galaxy. ...
... they have very high luminosities ~ 1011Lo which is 1000 times more luminous than a normal spiral galaxy. ...
ANTARES - National Optical Astronomy Observatory
... (active galactic nuclei–AGN) would appear as alerts in the LSST data stream. If a star moves too close to a massive black hole, the tidal forces can essentially rip it apart, illustrated in Figure 2. These TDEs will also appear as alerts in the LSST data stream with characteristics quite similar to ...
... (active galactic nuclei–AGN) would appear as alerts in the LSST data stream. If a star moves too close to a massive black hole, the tidal forces can essentially rip it apart, illustrated in Figure 2. These TDEs will also appear as alerts in the LSST data stream with characteristics quite similar to ...
Team Number: ______ OPTICS Team Members
... Circle your answer on each question or write your answer in the space provided. All questions are worth one point unless otherwise indicated. Tiebreaker for this event will be based on the accuracy of laser shoot. Part One: Geometric Optics (Total 30 pts) 1. A material transmits light at 120,000 km/ ...
... Circle your answer on each question or write your answer in the space provided. All questions are worth one point unless otherwise indicated. Tiebreaker for this event will be based on the accuracy of laser shoot. Part One: Geometric Optics (Total 30 pts) 1. A material transmits light at 120,000 km/ ...
June 2014 Night Sky - Explore More - At
... is so bright that it drowns their light out. This is why we only see stars at night when the Sun has dipped below the horizon and the sky is dark. The Sun is so bright that you should never look directly at it, but the picture on the left, taken by a space telescope, shows it close-up. It’s quite an ...
... is so bright that it drowns their light out. This is why we only see stars at night when the Sun has dipped below the horizon and the sky is dark. The Sun is so bright that you should never look directly at it, but the picture on the left, taken by a space telescope, shows it close-up. It’s quite an ...
PowerPoint Presentation - The Origin of the Universe
... eg. for a critical density (matter-dominated) universe, & even for a constant-velocity (empty of matter) universe. The SNe must have gotten farther than expected for some epoch of the universe The universe appears to have been accelerating between the epoch equivalent to z ~ 0.5 and now ! ...
... eg. for a critical density (matter-dominated) universe, & even for a constant-velocity (empty of matter) universe. The SNe must have gotten farther than expected for some epoch of the universe The universe appears to have been accelerating between the epoch equivalent to z ~ 0.5 and now ! ...
fall_2000_final
... Choose the best answer to each of the following questions using what you have learned in ASTR 101. Indicate your choice on the scantron. 1. The largest galaxies are A. giant spirals found near the Great Attractor. B. giant spirals in clusters with quasars. C. giant ellipticals in the Local Group. D. ...
... Choose the best answer to each of the following questions using what you have learned in ASTR 101. Indicate your choice on the scantron. 1. The largest galaxies are A. giant spirals found near the Great Attractor. B. giant spirals in clusters with quasars. C. giant ellipticals in the Local Group. D. ...
Stellar Spire in the Eagle Nebula
... regions of cold gas within the tower began collapsing under their own weight to make stars. The bumps and fingers of material in the center of the tower are examples of these stellar birthing areas. These regions may look small but they are roughly the size of our solar system. The fledgling stars con ...
... regions of cold gas within the tower began collapsing under their own weight to make stars. The bumps and fingers of material in the center of the tower are examples of these stellar birthing areas. These regions may look small but they are roughly the size of our solar system. The fledgling stars con ...
Section 4
... Types of Galaxies Focus Point out that classification systems help scientists organize and analyze events or objects so that these items are easier to study and discuss. Teach Ask: Which type of galaxy looks like a flattened or round ball? (Elliptical) Which type of galaxy has a bulge in the middle ...
... Types of Galaxies Focus Point out that classification systems help scientists organize and analyze events or objects so that these items are easier to study and discuss. Teach Ask: Which type of galaxy looks like a flattened or round ball? (Elliptical) Which type of galaxy has a bulge in the middle ...
cont. - UNLV Physics
... A. Because no galaxies exist at such a great distance." B. Galaxies may exist at that distance, but their light would be too faint for our telescopes to see." C. Because looking 15 billion light-years away means looking to a time before the universe existed." ...
... A. Because no galaxies exist at such a great distance." B. Galaxies may exist at that distance, but their light would be too faint for our telescopes to see." C. Because looking 15 billion light-years away means looking to a time before the universe existed." ...
ppt - Case Western Reserve University
... • The merger product is the only cosmological object that will be observable to future astronomers in 100 billion years • Collision will occur during the lifetime of the sun • The night sky will change • Simulated with an N-body/hydrodynamic code (Cox & Loeb 2007) • The only paper of mine that has a ...
... • The merger product is the only cosmological object that will be observable to future astronomers in 100 billion years • Collision will occur during the lifetime of the sun • The night sky will change • Simulated with an N-body/hydrodynamic code (Cox & Loeb 2007) • The only paper of mine that has a ...
Astronomy Facts
... ★ It is estimated there are 100-300 billion stars . in our Milky Way galaxy (and perhaps . 50 billion galaxies are within the grasp of the . Hubble Space Telescope (more stars than there . are grains of sand on all the beaches on earth!) ...
... ★ It is estimated there are 100-300 billion stars . in our Milky Way galaxy (and perhaps . 50 billion galaxies are within the grasp of the . Hubble Space Telescope (more stars than there . are grains of sand on all the beaches on earth!) ...
Hubble Deep Field
The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. It covers an area 2.5 arcminutes across, about one 24-millionth of the whole sky, which is equivalent in angular size to a 65 mm tennis ball at a distance of 100 metres. The image was assembled from 342 separate exposures taken with the Space Telescope's Wide Field and Planetary Camera 2 over ten consecutive days between December 18 and December 28, 1995.The field is so small that only a few foreground stars in the Milky Way lie within it; thus, almost all of the 3,000 objects in the image are galaxies, some of which are among the youngest and most distant known. By revealing such large numbers of very young galaxies, the HDF has become a landmark image in the study of the early universe, with the associated scientific paper having received over 900 citations by the end of 2014.Three years after the HDF observations were taken, a region in the south celestial hemisphere was imaged in a similar way and named the Hubble Deep Field South. The similarities between the two regions strengthened the belief that the universe is uniform over large scales and that the Earth occupies a typical region in the Universe (the cosmological principle). A wider but shallower survey was also made as part of the Great Observatories Origins Deep Survey. In 2004 a deeper image, known as the Hubble Ultra-Deep Field (HUDF), was constructed from a few months of light exposure. The HUDF image was at the time the most sensitive astronomical image ever made at visible wavelengths, and it remained so until the Hubble Extreme Deep Field (XDF) was released in 2012.