ASTRONOMY 120
... Supernova 1987A is the closest supernova to Earth in the telescope era. While it was not in our Galaxy, it occurred in one of our satellite galaxies, the Large Magellanic Cloud. This made Supernova 1987A very accessible and easy to see. The distance to the LMC is very well determined, so astronomers ...
... Supernova 1987A is the closest supernova to Earth in the telescope era. While it was not in our Galaxy, it occurred in one of our satellite galaxies, the Large Magellanic Cloud. This made Supernova 1987A very accessible and easy to see. The distance to the LMC is very well determined, so astronomers ...
Astronomy 162: A Journey through the Solar System with Laboratory
... Caveat! This course structure is experimental. Your feedback is sincerely solicited. ...
... Caveat! This course structure is experimental. Your feedback is sincerely solicited. ...
Supernova and Supernova Remnants lec 1-2
... many people over many years- Nobel prize 2011) that type Ia SN are ‘standardizable candle’- one can use their brightness, color and speed of decay to determine an ‘absolute’ luminosity to ~10% accuracy. – `With a measured redshift and absolute luminosity one can get the luminosity distance ...
... many people over many years- Nobel prize 2011) that type Ia SN are ‘standardizable candle’- one can use their brightness, color and speed of decay to determine an ‘absolute’ luminosity to ~10% accuracy. – `With a measured redshift and absolute luminosity one can get the luminosity distance ...
Astronomy Lecture Day 02 Scale, Ratios and Proportions Intro
... d. Another scale exercise: APOD 12 Mar 2012 http://apod.nasa.gov/apod/ap120312.html 3. Working with ratios to better understand the scale a. Distance to the Sun compared to the diameter of the Earth i. Distance to Sun is 1 AU = 1.51011 m = 1.5108 km ii. How to convert from m to km: divide by 1,000 ...
... d. Another scale exercise: APOD 12 Mar 2012 http://apod.nasa.gov/apod/ap120312.html 3. Working with ratios to better understand the scale a. Distance to the Sun compared to the diameter of the Earth i. Distance to Sun is 1 AU = 1.51011 m = 1.5108 km ii. How to convert from m to km: divide by 1,000 ...
Magnetic fields in galaxies
... electrons in a range of energies: * widely assumed power law distribution of electrons combined with the equipartition of energy density between magnetic field ...
... electrons in a range of energies: * widely assumed power law distribution of electrons combined with the equipartition of energy density between magnetic field ...
Cosmology ppt. - University of Dayton
... together, radiation just expands with the universe to become the 2.7 K cosmic radiation of today. PClouds of matter condense out to form clumps of matter, galaxies, etc. Formation of galaxies needs dark matter? ...
... together, radiation just expands with the universe to become the 2.7 K cosmic radiation of today. PClouds of matter condense out to form clumps of matter, galaxies, etc. Formation of galaxies needs dark matter? ...
rotation of the Earth
... ancient Greeks were already aware that the Moon would appear in slightly different locations relative to the stars when viewed from different locations on the Earth, and used this effect to accurately estimate its distance from Earth. However, the lack of any parallax between the stars demonstrated ...
... ancient Greeks were already aware that the Moon would appear in slightly different locations relative to the stars when viewed from different locations on the Earth, and used this effect to accurately estimate its distance from Earth. However, the lack of any parallax between the stars demonstrated ...
Astronomy
... more mass than Chandrasekhar limit. A. Nova B. Type Ia supernova C. Type II supernova D. Pulsar E. None of the above ...
... more mass than Chandrasekhar limit. A. Nova B. Type Ia supernova C. Type II supernova D. Pulsar E. None of the above ...
Lecture 7
... What does an object emitting light look like to different observers when it is 1) Not moving ...
... What does an object emitting light look like to different observers when it is 1) Not moving ...
Document
... – They are composed mostly of molecular hydrogen (H2) with carbon monoxide (CO) and organic compounds. – They contain dust that likely acts as shields so that molecules exist. – They are cold, ~10K (0K is absolute 0, -273C) – They have masses from a few times the mass of our star up to 107 times the ...
... – They are composed mostly of molecular hydrogen (H2) with carbon monoxide (CO) and organic compounds. – They contain dust that likely acts as shields so that molecules exist. – They are cold, ~10K (0K is absolute 0, -273C) – They have masses from a few times the mass of our star up to 107 times the ...
Microsoft Word Format - University of Toronto Physics
... 1. Align the laser and mirror. Let the laser beam reflect from the silver side of the mirror, turned to approximately 45° so that the reflected light is incident on the pinhole. 2. Align the track. Take everything from the track and put up the bar pointer (one that has a sharp tip on the top). The ...
... 1. Align the laser and mirror. Let the laser beam reflect from the silver side of the mirror, turned to approximately 45° so that the reflected light is incident on the pinhole. 2. Align the track. Take everything from the track and put up the bar pointer (one that has a sharp tip on the top). The ...
CANGAROO and VHE γ-ray Astronomy: Past, present and future
... H.E.S.S., with better sensitivity at lower threshold energy, detected TeV sources from which CANGAROO had difficulty to obtain signal in spite of long-continued efforts : • PKS2155-304 (necessary to be blessed by outburst) ...
... H.E.S.S., with better sensitivity at lower threshold energy, detected TeV sources from which CANGAROO had difficulty to obtain signal in spite of long-continued efforts : • PKS2155-304 (necessary to be blessed by outburst) ...
... It is likely that such an IR survey is already planned as part of a key project for EMIR. This is one example, therefore, given suitable coordination, of a collaborative proposal between the GTC and the GTM that provides the required dataset for both facilities in the most efficient manner. The surf ...
revision_foundation_..
... then the wave will have vertical polarisation and any receiving aerial must also be positioned vertically. • The main transmitters in the U.K. send out signals which are horizontally polarised. • Many areas of the country are now served by mixed polarisation transmitters. • Examples: Sunglasses redu ...
... then the wave will have vertical polarisation and any receiving aerial must also be positioned vertically. • The main transmitters in the U.K. send out signals which are horizontally polarised. • Many areas of the country are now served by mixed polarisation transmitters. • Examples: Sunglasses redu ...
The Triple-Ring Nebula: Fingerprint of a Binary Merger
... merger of two stars about 20,000 years before the explosion has long been the leading model for the progenitor8 . In this model, the system consisted initially of two massive stars, one with a mass of 15 – 20 times the mass of the Sun and a less massive companion with a mass of times the mass of t ...
... merger of two stars about 20,000 years before the explosion has long been the leading model for the progenitor8 . In this model, the system consisted initially of two massive stars, one with a mass of 15 – 20 times the mass of the Sun and a less massive companion with a mass of times the mass of t ...
August 2015 BRAS Newsletter
... telescope, a soft, bluish-green glow can be seen to surround the ‘dumbbell’; and was the first planetary nebula discovered – by Charles Messier in 1764. Brocchi’s Cluster, Al Sufi’s Cluster, Collinder 399, The Coathanger (asterism), mag. 3.6, 19 25.4 +20 11, 90’, is a group of stars with magnitudes ...
... telescope, a soft, bluish-green glow can be seen to surround the ‘dumbbell’; and was the first planetary nebula discovered – by Charles Messier in 1764. Brocchi’s Cluster, Al Sufi’s Cluster, Collinder 399, The Coathanger (asterism), mag. 3.6, 19 25.4 +20 11, 90’, is a group of stars with magnitudes ...
Adaptive Optics at the Keck Observatory: Goals and Near
... highest-resolution ever maps of Titan, volcanic outbursts on Io, and atmospheric structure on Neptune. Another important class of solar system objects, the smaller icy planets and satellites, are just out of range of current AO systems. With sizes of a couple of tenths of an arcsecond or smaller, th ...
... highest-resolution ever maps of Titan, volcanic outbursts on Io, and atmospheric structure on Neptune. Another important class of solar system objects, the smaller icy planets and satellites, are just out of range of current AO systems. With sizes of a couple of tenths of an arcsecond or smaller, th ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.