Astronomy Assignment #1
... with a diameter of 1.23 solar diameters. Alpha Centauri B is (60/85) = 0.706 times smaller than Alpha Centauri A. based on the ratio of their angular sizes (and the fact that they are at the same distance). So Alpha Centauri B is slightly smaller than the Sun with a diameter of 0.867 solar diameters ...
... with a diameter of 1.23 solar diameters. Alpha Centauri B is (60/85) = 0.706 times smaller than Alpha Centauri A. based on the ratio of their angular sizes (and the fact that they are at the same distance). So Alpha Centauri B is slightly smaller than the Sun with a diameter of 0.867 solar diameters ...
Participant Handout - Math Machines Home
... wavelength of a star’s peak emission as described by the equation: λmax T= 3,000,000 nm K The actual brightness (luminosity) of a star is determined by the star’s size and temperature. In addition to having a more bluish color, higher temperature stars emit a larger quantity of light. Still, there a ...
... wavelength of a star’s peak emission as described by the equation: λmax T= 3,000,000 nm K The actual brightness (luminosity) of a star is determined by the star’s size and temperature. In addition to having a more bluish color, higher temperature stars emit a larger quantity of light. Still, there a ...
Precession of Earth
... slowly tracing a cone shape. The wobble is very slow; it takes the Earth 26,000 years to trace one complete conical shape. This wobbling motion of Earth on its axis is called precession. Because of precession, Polaris and Vega alternate as the North Star every 13,000 years. Polaris: The Current Nort ...
... slowly tracing a cone shape. The wobble is very slow; it takes the Earth 26,000 years to trace one complete conical shape. This wobbling motion of Earth on its axis is called precession. Because of precession, Polaris and Vega alternate as the North Star every 13,000 years. Polaris: The Current Nort ...
Environmental Science
... slowly tracing a cone shape. The wobble is very slow; it takes the Earth 26,000 years to trace one complete conical shape. This wobbling motion of Earth on its axis is called precession. Because of precession, Polaris and Vega alternate as the North Star every 13,000 years. Polaris: The Current Nort ...
... slowly tracing a cone shape. The wobble is very slow; it takes the Earth 26,000 years to trace one complete conical shape. This wobbling motion of Earth on its axis is called precession. Because of precession, Polaris and Vega alternate as the North Star every 13,000 years. Polaris: The Current Nort ...
Astronomical Formulae
... Where D is the diameter of the objective in inches Atmospheric conditions seldom permit Theta > 0.5". The Dawes Limit is one half the angular diameter of the Airy (diffraction) disc, so that the edge of one disc does not extend beyond the center of the other). The working value is two times the Dawe ...
... Where D is the diameter of the objective in inches Atmospheric conditions seldom permit Theta > 0.5". The Dawes Limit is one half the angular diameter of the Airy (diffraction) disc, so that the edge of one disc does not extend beyond the center of the other). The working value is two times the Dawe ...
Types of Stars http://space.about.com/od/stars/tp/What-Are
... star is a system of two stars that are gravitationally bound to each other. They orbit around a common point, called the center of mass. It is estimated that about half of all the stars in our galaxy are part of a binary system. Visual binaries can be seen as two separate stars through a telescope. ...
... star is a system of two stars that are gravitationally bound to each other. They orbit around a common point, called the center of mass. It is estimated that about half of all the stars in our galaxy are part of a binary system. Visual binaries can be seen as two separate stars through a telescope. ...
Way Milky the MAPPING
... And like a child on a swing, each time a star crosses the plane of the bar at what’s known as the resonance point, the star gets a little push that moves it a bit higher above the plane, forming the edge of the bulge. Through computer simulations, the researchers demonstrated that between the two ve ...
... And like a child on a swing, each time a star crosses the plane of the bar at what’s known as the resonance point, the star gets a little push that moves it a bit higher above the plane, forming the edge of the bulge. Through computer simulations, the researchers demonstrated that between the two ve ...
Document
... • MS turn off point varies massively, faintest is consistent with globulars • Maximum luminosity of stars can get to Mv-10 • Very massive stars found in these clusters ...
... • MS turn off point varies massively, faintest is consistent with globulars • Maximum luminosity of stars can get to Mv-10 • Very massive stars found in these clusters ...
Introduction to the HR Diagram
... Important features of the HR diagram: The Y-axis is the total energy output of the star, called the Luminosity. The luminosity of stars is measured in units of the luminosity of the Sun or one solar luminosity. Thus a star that has a luminosity of 10 solar luminosities outputs 10 times more energ ...
... Important features of the HR diagram: The Y-axis is the total energy output of the star, called the Luminosity. The luminosity of stars is measured in units of the luminosity of the Sun or one solar luminosity. Thus a star that has a luminosity of 10 solar luminosities outputs 10 times more energ ...
Unit 1
... • The presence of mass slows down the passage of time, so clocks near a black hole will run noticeably slower than clocks more distant • The warping of space has been demonstrated many times, including by observations of the orbit of ...
... • The presence of mass slows down the passage of time, so clocks near a black hole will run noticeably slower than clocks more distant • The warping of space has been demonstrated many times, including by observations of the orbit of ...
MSci Astrophysics 210PHY412
... • MS turn off point varies massively, faintest is consistent with globulars • Maximum luminosity of stars can get to Mv-10 • Very massive stars found in these clusters ...
... • MS turn off point varies massively, faintest is consistent with globulars • Maximum luminosity of stars can get to Mv-10 • Very massive stars found in these clusters ...
description
... Sometimes when you look up at the night sky, it can be very intimidating trying to make out anything except a whole bunch of scattered stars. Hopefully, this next activity will give you a better idea of which direction to start looking and help you map out the night sky. So when someone asks you whe ...
... Sometimes when you look up at the night sky, it can be very intimidating trying to make out anything except a whole bunch of scattered stars. Hopefully, this next activity will give you a better idea of which direction to start looking and help you map out the night sky. So when someone asks you whe ...
Lecture 10 Advanced Variable Star Stuff March 18 2003 8:00 PM
... blows off all of its outer layers and leaves behind a hot dense core. There is no more fuel for nuclear fusion (the elements left are mainly things like carbon and iron, not easy to fuse). If we add too much fuel, what happens? If you put too much fuel onto the white dwarf, you can push it over the ...
... blows off all of its outer layers and leaves behind a hot dense core. There is no more fuel for nuclear fusion (the elements left are mainly things like carbon and iron, not easy to fuse). If we add too much fuel, what happens? If you put too much fuel onto the white dwarf, you can push it over the ...
The Solar System and Beyond
... Distances between planets are very large but they are insignificant compared with distances between stars. Because units that are commonly used to measure distances on Earth such as miles or kilometers are too small for use in astronomy, other units of distance are needed. Within the solar system, t ...
... Distances between planets are very large but they are insignificant compared with distances between stars. Because units that are commonly used to measure distances on Earth such as miles or kilometers are too small for use in astronomy, other units of distance are needed. Within the solar system, t ...
Colours of the rainbow
... 7. The angle that the rainbow appears to take in the sky is represented by ∠BGE. Explain why? 8. What is the size of ∠BGE? 9. The Moon and the Sun appear about the same size in the sky. It is well known that the Sun is many times larger than the ...
... 7. The angle that the rainbow appears to take in the sky is represented by ∠BGE. Explain why? 8. What is the size of ∠BGE? 9. The Moon and the Sun appear about the same size in the sky. It is well known that the Sun is many times larger than the ...
Classifying Spectra PDF version - the Home Page for Voyager2
... The spectral classes are specified by the letters O, B, A, F, G, K, M, L, T going hotter to colder. Each letter is subdivided by assigning a number 0 through 9 following the letter and going from hotter to colder. So B0 is colder than O9 and hotter than B1. Obviously not every type is shown. Origina ...
... The spectral classes are specified by the letters O, B, A, F, G, K, M, L, T going hotter to colder. Each letter is subdivided by assigning a number 0 through 9 following the letter and going from hotter to colder. So B0 is colder than O9 and hotter than B1. Obviously not every type is shown. Origina ...
B - Department of Physics and Astronomy
... 11. Which of the following processes is NOT involved in the supernova explosion of a massive star? A. passage of a shock wave through the star’s envelope B. *helium flash in the star’s core, when 3 helium nuclei combine C. photodisintegration of nuclei by gamma rays D. collapse of the star’s core 12 ...
... 11. Which of the following processes is NOT involved in the supernova explosion of a massive star? A. passage of a shock wave through the star’s envelope B. *helium flash in the star’s core, when 3 helium nuclei combine C. photodisintegration of nuclei by gamma rays D. collapse of the star’s core 12 ...
Lecture
... • The life of some stars (like our Sun) stops after this stage, but others will continue processing heavier and heavier elements than carbon in their cores. • For the massive stars (more than 8 solar masses), iron will be the last element that a star can form in its core. • Stars start their lifetim ...
... • The life of some stars (like our Sun) stops after this stage, but others will continue processing heavier and heavier elements than carbon in their cores. • For the massive stars (more than 8 solar masses), iron will be the last element that a star can form in its core. • Stars start their lifetim ...
distant stars nearby star parallax angle The principle of geometrical
... Does the star Vega in Lyra appear exceptionally bright because it’s an intrinsically bright star, or simply because it’s unusually close by? What about Betelgeuse in Orion? If we didn’t know the distances to these stars, we wouldn’t know that Betelgeuse is a red giant star, with a much greater intri ...
... Does the star Vega in Lyra appear exceptionally bright because it’s an intrinsically bright star, or simply because it’s unusually close by? What about Betelgeuse in Orion? If we didn’t know the distances to these stars, we wouldn’t know that Betelgeuse is a red giant star, with a much greater intri ...
Corona Australis
Corona Australis /kɵˈroʊnə ɒˈstreɪlɨs/ or Corona Austrina /kɵˈroʊnə ɒˈstraɪnə/ is a constellation in the Southern Celestial Hemisphere. Its Latin name means ""southern crown"", and it is the southern counterpart of Corona Borealis, the northern crown. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The Ancient Greeks saw Corona Australis as a wreath rather than a crown and associated it with Sagittarius or Centaurus. Other cultures have likened the pattern to a turtle, ostrich nest, a tent, or even a hut belonging to a rock hyrax.Although fainter than its namesake, the oval- or horseshoe-shaped pattern of its brighter stars renders it distinctive. Alpha and Beta Coronae Australis are the two brightest stars with an apparent magnitude of around 4.1. Epsilon Coronae Australis is the brightest example of a W Ursae Majoris variable in the southern sky. Lying alongside the Milky Way, Corona Australis contains one of the closest star-forming regions to our Solar System—a dusty dark nebula known as the Corona Australis Molecular Cloud, lying about 430 light years away. Within it are stars at the earliest stages of their lifespan. The variable stars R and TY Coronae Australis light up parts of the nebula, which varies in brightness accordingly.