Universe 8e Lecture Chapter 17 Nature of Stars
... The distance (d) to a star can be determined from a measurement of the star’s parallax (p). The “intrinsic brightness” or luminosity (L) of a star can be determined from a measurement of the star’s apparent brightness (b) and a knowledge of the star’s distance. The surface temperature (T) of a star ...
... The distance (d) to a star can be determined from a measurement of the star’s parallax (p). The “intrinsic brightness” or luminosity (L) of a star can be determined from a measurement of the star’s apparent brightness (b) and a knowledge of the star’s distance. The surface temperature (T) of a star ...
Stars, Galaxies & Universe
... • What are the three types of telescopes and how are they different? • Explain the H-R diagram. • How does the mass of a star affect the length of life of a star? • How do the different types of galaxies compare? • Explain the Big Bang Theory. ...
... • What are the three types of telescopes and how are they different? • Explain the H-R diagram. • How does the mass of a star affect the length of life of a star? • How do the different types of galaxies compare? • Explain the Big Bang Theory. ...
5-E Galaxy T - McDonald Observatory
... hazy band of light that stretches roughly north-south a couple of hours after sunset. But you need to get away from city lights to see it, and you need to look before the Moon rises in late evening. ...
... hazy band of light that stretches roughly north-south a couple of hours after sunset. But you need to get away from city lights to see it, and you need to look before the Moon rises in late evening. ...
Dim Stars - granthamkuehl
... In our study of Stars The students will be able to Determine color, temp., brightness and Size of a star And show what they learned by Interpreting the HR Diagram ...
... In our study of Stars The students will be able to Determine color, temp., brightness and Size of a star And show what they learned by Interpreting the HR Diagram ...
Stars
... •With Newton’s modifications to Kepler’s laws, the period and size of the orbits yield the sum of the masses, while the relative distance of each star from the center of mass yields the ratio of the masses. •The ratio and sum provide each mass individually. ...
... •With Newton’s modifications to Kepler’s laws, the period and size of the orbits yield the sum of the masses, while the relative distance of each star from the center of mass yields the ratio of the masses. •The ratio and sum provide each mass individually. ...
Parallax, Apparent Magnitude and Absolute Magnitude
... Hence, to determine the luminosity of a star from its flux, we also need to know its distance, D. At least for the nearest stars, we can measure their distance accurately using trigonometry. Figure 1 shows the effect of trigonometric parallax: when we look at an object along different lines of sight ...
... Hence, to determine the luminosity of a star from its flux, we also need to know its distance, D. At least for the nearest stars, we can measure their distance accurately using trigonometry. Figure 1 shows the effect of trigonometric parallax: when we look at an object along different lines of sight ...
Astronomy 120
... (a) Capella and the sun have roughly the same surface temperature. Which star is larger? (b) Regulus and Capella have about the same luminosity. Which star is larger? (c) Vega and Sirius have about the same surface temperature. Which star is more luminous? (d) Which star would appear redder, Vega or ...
... (a) Capella and the sun have roughly the same surface temperature. Which star is larger? (b) Regulus and Capella have about the same luminosity. Which star is larger? (c) Vega and Sirius have about the same surface temperature. Which star is more luminous? (d) Which star would appear redder, Vega or ...
Solutions - faculty.ucmerced.edu
... Next, the rotation of the galaxy adds an additional redshift, depending on the rotational velocity. This velocity also depends on the angle of orientation. If the angle was zero, giving a top view of the galaxy, then we wouldn’t measure any rotational velocity, since it would be rotating perpendicul ...
... Next, the rotation of the galaxy adds an additional redshift, depending on the rotational velocity. This velocity also depends on the angle of orientation. If the angle was zero, giving a top view of the galaxy, then we wouldn’t measure any rotational velocity, since it would be rotating perpendicul ...
Measuring Stars
... brighter stars had longer periods suggested that period and luminosity were related. Thus if a its period is known, its luminosity can be estimated . Cepheids are bright supergiant stars (~1000 times brighter than the Sun), so they can be identified even in other galaxies. ...
... brighter stars had longer periods suggested that period and luminosity were related. Thus if a its period is known, its luminosity can be estimated . Cepheids are bright supergiant stars (~1000 times brighter than the Sun), so they can be identified even in other galaxies. ...
astronomy webquest…… explore the universe
... http://outreach.atnf.csiro.au/education/everyone/pulsars/ ...
... http://outreach.atnf.csiro.au/education/everyone/pulsars/ ...
The Swansong of Stars Orbiting Massive Black Holes
... LISA will be able to detect compact objects that spiral into a MBH by GW emission from up to a distance of a Gpc. The signal is expected to be weak. To detect it, it is necessary to know in advance the shape of the wave trains, and to do that, it is necessary to know the eccentricity of the inspiral ...
... LISA will be able to detect compact objects that spiral into a MBH by GW emission from up to a distance of a Gpc. The signal is expected to be weak. To detect it, it is necessary to know in advance the shape of the wave trains, and to do that, it is necessary to know the eccentricity of the inspiral ...
Star Formation
... • Evidence: Mg 26 far above standard levels, within the body of meteorites. Mg 26 is the daughter product of Al 26, a radioactive element created in supernova explosions. • Indicates: A supernova went off nearby, seeding the solar system with Al 26 while the material which makes meteorites was still ...
... • Evidence: Mg 26 far above standard levels, within the body of meteorites. Mg 26 is the daughter product of Al 26, a radioactive element created in supernova explosions. • Indicates: A supernova went off nearby, seeding the solar system with Al 26 while the material which makes meteorites was still ...
What is a Scientist? - Cockeysville Middle School
... Identify the temperature associated with each color, and include an example of a star that would appear each color. ...
... Identify the temperature associated with each color, and include an example of a star that would appear each color. ...
Chapter20
... •After helium burning begins, a star has two sources of energy, hydrogen fusion in a shell around the core and helium fusion in the core •The core of the star becomes rich in carbon and oxygen nuclei, and the star's surface temperature goes up to become a horizontal branch star •Stars with masses gr ...
... •After helium burning begins, a star has two sources of energy, hydrogen fusion in a shell around the core and helium fusion in the core •The core of the star becomes rich in carbon and oxygen nuclei, and the star's surface temperature goes up to become a horizontal branch star •Stars with masses gr ...
Absolute Magnitudes of Supernovae
... Use the value of the Hubble Law to compute the distance of the host galaxy (and the supernova) from the recession velocity. Remember that the distance = velocity / Ho. Now you can calculate the absolute magnitude from the distance and the apparent magnitude using the inverse square law. Recall that ...
... Use the value of the Hubble Law to compute the distance of the host galaxy (and the supernova) from the recession velocity. Remember that the distance = velocity / Ho. Now you can calculate the absolute magnitude from the distance and the apparent magnitude using the inverse square law. Recall that ...
The Warrumbungle Observer The Warrumbungle Observer
... Scorpio named Antares. This is quite obvious after a couple of glasses of wine. However for those ‘off the wagon’ it resembles more like a teapot with the arrow being the spout. The teapot is located on the galactic centre and is a treasure-trove of goodies for those who own a telescope. The teapot ...
... Scorpio named Antares. This is quite obvious after a couple of glasses of wine. However for those ‘off the wagon’ it resembles more like a teapot with the arrow being the spout. The teapot is located on the galactic centre and is a treasure-trove of goodies for those who own a telescope. The teapot ...
The Evolution of Stars - hrsbstaff.ednet.ns.ca
... objects actually bend space, causing other objects to be drawn towards them. ...
... objects actually bend space, causing other objects to be drawn towards them. ...
Astronomy Final C - Tarleton State University
... 47. The most widely accepted theory for the cause of Cosmic Inflation is A.Baryogenesis B.Annihilation C.Pair Production D.Phase Change E.Decoupling 48. In the production of ?, the rate of transfer to the White Dwarf is high; eventually the mass of the White Dwarf increases so that its core becomes ...
... 47. The most widely accepted theory for the cause of Cosmic Inflation is A.Baryogenesis B.Annihilation C.Pair Production D.Phase Change E.Decoupling 48. In the production of ?, the rate of transfer to the White Dwarf is high; eventually the mass of the White Dwarf increases so that its core becomes ...
Using Star Charts Introduction A Digression on Star Names
... can be used by itself in learning the constellations, although it is not quite as convenient as the star wheel. The SC1 shows the magnitudes of stars by the size of the dot representing the star. The correspondence between the magnitude of a star and the size of its plotted symbol is shown in the sc ...
... can be used by itself in learning the constellations, although it is not quite as convenient as the star wheel. The SC1 shows the magnitudes of stars by the size of the dot representing the star. The correspondence between the magnitude of a star and the size of its plotted symbol is shown in the sc ...
types of stars, luminosity, and brightness
... 5. The absolute brightness is the brightness that would be measured at a standard distance of 10 pc. Apparent brightness is the brightness of a star measured from Earth. 6. Absolute brightness is the luminosity of a star as it would be measured at 10 pc. Luminosity is the intrinsic energy per sec th ...
... 5. The absolute brightness is the brightness that would be measured at a standard distance of 10 pc. Apparent brightness is the brightness of a star measured from Earth. 6. Absolute brightness is the luminosity of a star as it would be measured at 10 pc. Luminosity is the intrinsic energy per sec th ...
PowerPoint
... Some Reasons for the great abundance of Low-Mass stars… 1) Obviously requires less material to make (many!) Low-Mass Stars, than High-Mass ones; 2) Even though High-Mass stars have more “fuel” (Hydrogen)… ...
... Some Reasons for the great abundance of Low-Mass stars… 1) Obviously requires less material to make (many!) Low-Mass Stars, than High-Mass ones; 2) Even though High-Mass stars have more “fuel” (Hydrogen)… ...
Build your own Galaxy - McDonald Observatory
... dust, and stars. Generally, it is flat like the brim of a wide hat. Astronomers estimate that the galaxy’s disk is about 100,000 light-years in diameter. Stars: glitter. The hottest and brightest stars are blue and white. But these stars live short lives — only ten million to a few hundred million y ...
... dust, and stars. Generally, it is flat like the brim of a wide hat. Astronomers estimate that the galaxy’s disk is about 100,000 light-years in diameter. Stars: glitter. The hottest and brightest stars are blue and white. But these stars live short lives — only ten million to a few hundred million y ...
Serpens
Serpens (""the Serpent"", Greek Ὄφις) is a constellation of the northern hemisphere. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations defined by the International Astronomical Union. It is unique among the modern constellations in being split into two non-contiguous parts, Serpens Caput (Serpent's Head) to the west and Serpens Cauda (Serpent's Tail) to the east. Between these two halves lies the constellation of Ophiuchus, the ""Serpent-Bearer"". In figurative representations, the body of the serpent is represented as passing behind Ophiuchus between Mu Serpentis in Serpens Caput and Nu Serpentis in Serpens Cauda.The brightest star in Serpens is the red giant star Alpha Serpentis, or Unukalhai, in Serpens Caput, with an apparent magnitude of 2.63. Also located in Serpens Caput are the naked-eye globular cluster Messier 5 and the naked-eye variables R Serpentis and Tau4 Serpentis. Notable extragalactic objects include Seyfert's Sextet, one of the densest galaxy clusters known; Arp 220, the prototypical ultraluminous infrared galaxy; and Hoag's Object, the most famous of the very rare class of galaxies known as ring galaxies.Part of the Milky Way's galactic plane passes through Serpens Cauda, which is therefore rich in galactic deep-sky objects, such as the Eagle Nebula (IC 4703) and its associated star cluster Messier 16. The nebula measures 70 light-years by 50 light-years and contains the Pillars of Creation, three dust clouds that became famous for the image taken by the Hubble Space Telescope. Other striking objects include the Red Square Nebula, one of the few objects in astronomy to take on a square shape; and Westerhout 40, a massive nearby star-forming region consisting of a molecular cloud and an H II region.