Define the following terms in the space provided
... sidereal year 365.2564 days tropical year 365.2422 days Gregorian year 365.2425 days Earth mass 5.9736× 1024 kilograms Sun mass 1.9891× 1030 kg = 332,980 × Earth mean Earth radius 6371 kilometers Sun radius 6.96265 × 105 km = 109 × Earth Sun luminosity 3.827× 1026 watts ...
... sidereal year 365.2564 days tropical year 365.2422 days Gregorian year 365.2425 days Earth mass 5.9736× 1024 kilograms Sun mass 1.9891× 1030 kg = 332,980 × Earth mean Earth radius 6371 kilometers Sun radius 6.96265 × 105 km = 109 × Earth Sun luminosity 3.827× 1026 watts ...
the life cycles of stars (5) - U3A Bendigo Courses / Activities
... is the universe was born about 13.7 billion years ago in a violent explosion out of nothing. The only elements made were hydrogen and helium (with some traces of Lithium). No other elements were created in the big bang. All others have been created in stars. We are basically made of hydrocarbons, v ...
... is the universe was born about 13.7 billion years ago in a violent explosion out of nothing. The only elements made were hydrogen and helium (with some traces of Lithium). No other elements were created in the big bang. All others have been created in stars. We are basically made of hydrocarbons, v ...
Mon Aug 5, 2013 QUASAR DISCOVERY Quasars were discovered
... Quasars were discovered on August 5th, 1962. The first quasar found has the unromantic designation, 3C273, and it was discovered by a radio telescope when the object disappeared behind the moon during a lunar occultation. Quasi-stellar radio sources, or quasars, are amazingly faint – only seen by th ...
... Quasars were discovered on August 5th, 1962. The first quasar found has the unromantic designation, 3C273, and it was discovered by a radio telescope when the object disappeared behind the moon during a lunar occultation. Quasi-stellar radio sources, or quasars, are amazingly faint – only seen by th ...
Ch. 1 - University of Tennessee Department of Physics and Astronomy
... Naked eye view of bright stars In Orion ...
... Naked eye view of bright stars In Orion ...
PPT
... • The overall range of stellar masses runs from 0.08 times the mass of the Sun to about 150 times the mass of the Sun. • Masses are only known for stars that form binary systems, but about half of all stars are in fact in binary systems! – 0.08 MSun is approximately 80 MJupiter ...
... • The overall range of stellar masses runs from 0.08 times the mass of the Sun to about 150 times the mass of the Sun. • Masses are only known for stars that form binary systems, but about half of all stars are in fact in binary systems! – 0.08 MSun is approximately 80 MJupiter ...
Slide 1
... which occur for a single massive star and those which occur because of mass transfer onto a white dwarf in a binary system • Difference between the two types lies only in what gets the process started toward the explosion ...
... which occur for a single massive star and those which occur because of mass transfer onto a white dwarf in a binary system • Difference between the two types lies only in what gets the process started toward the explosion ...
Is the Sun a Star? - Classroom Websites
... each planetary system has a central starjust as our own solar system has one star, sometimes called by its Roman name, Sol. In some systems there are two (or even more stars) at the center. • Another approach, appropriate for middle and high school levels, is to have students research the history of ...
... each planetary system has a central starjust as our own solar system has one star, sometimes called by its Roman name, Sol. In some systems there are two (or even more stars) at the center. • Another approach, appropriate for middle and high school levels, is to have students research the history of ...
Second
... Where , the mean molecular weight, is a function of composition and ionization, and we can assume it to be constant in a stellar atmosphere (≈0.6 for the Sun). ...
... Where , the mean molecular weight, is a function of composition and ionization, and we can assume it to be constant in a stellar atmosphere (≈0.6 for the Sun). ...
Laboratory Title
... White Dwarf After the helium in the core has all been converted into carbon, the core collapses again, and this time the outer layers are expelled into planetary nebula. The core remains as a white dwarf. No further nuclear reactions take place and eventually it will cool so that no light is seen. A ...
... White Dwarf After the helium in the core has all been converted into carbon, the core collapses again, and this time the outer layers are expelled into planetary nebula. The core remains as a white dwarf. No further nuclear reactions take place and eventually it will cool so that no light is seen. A ...
Standard EPS Shell Presentation
... Explain the factors that determine the brightness of a star in the sky. Discuss the importance of the H-R diagram to astronomers. Explain the relationship between mass and the life cycle of a star. Describe the phases in the life cycle of a sun-like star. Discuss how the death of a massive star is r ...
... Explain the factors that determine the brightness of a star in the sky. Discuss the importance of the H-R diagram to astronomers. Explain the relationship between mass and the life cycle of a star. Describe the phases in the life cycle of a sun-like star. Discuss how the death of a massive star is r ...
Chapter 02
... First introduced by Hipparchus (160 - 127 B.C.): • Brightest stars: ~1st magnitude • Faintest stars (unaided eye): 6th magnitude • apparent visual magnitude = “unaided eye” from earth • absolute magnitude = from about 33 light years away • 1st mag. stars appear 100 times brighter than 6th mag. • 1 m ...
... First introduced by Hipparchus (160 - 127 B.C.): • Brightest stars: ~1st magnitude • Faintest stars (unaided eye): 6th magnitude • apparent visual magnitude = “unaided eye” from earth • absolute magnitude = from about 33 light years away • 1st mag. stars appear 100 times brighter than 6th mag. • 1 m ...
Photoelectric Photometry of the Pleiades Student Manual
... You will use this instrument to collect data on 24 stars in the region of the Pleiades star cluster. The apparent magnitudes will be measured for each star, in each of three colors. We will assume all of these stars are approximately the same distance away. This is a necessary assumption, and reason ...
... You will use this instrument to collect data on 24 stars in the region of the Pleiades star cluster. The apparent magnitudes will be measured for each star, in each of three colors. We will assume all of these stars are approximately the same distance away. This is a necessary assumption, and reason ...
answers2004_05_BC - Particle Physics and Particle Astrophysics
... Close orbits are also favoured by the technique, and also by the fact that measurements have only been going on for ~10 years (so even Jupiter would have completed not quite one orbit). Therefore finding gas giants in “asteroidbelt” sized orbits but not farther out is likely due to bias. However, fi ...
... Close orbits are also favoured by the technique, and also by the fact that measurements have only been going on for ~10 years (so even Jupiter would have completed not quite one orbit). Therefore finding gas giants in “asteroidbelt” sized orbits but not farther out is likely due to bias. However, fi ...
AST 207 Test 1 28 September 2011
... Star X is on a bigger orbit. The radius of the orbit is the distance from the star to the center of mass of the star-companion system. Since , the mass of the companion is 1000 bigger for star X than for 51 Peg. Star X is orbiting another star, not a planet. 2. Use the drawing on the front page, whi ...
... Star X is on a bigger orbit. The radius of the orbit is the distance from the star to the center of mass of the star-companion system. Since , the mass of the companion is 1000 bigger for star X than for 51 Peg. Star X is orbiting another star, not a planet. 2. Use the drawing on the front page, whi ...
Famous Constellations
... • http://media-1.web.britannica.com/eb-media/31/148331-004-2F6DE950.jpg ...
... • http://media-1.web.britannica.com/eb-media/31/148331-004-2F6DE950.jpg ...
What is a Star?
... They vary in size, mass and temperature, diameters ranging from 450x smaller to over 1000x larger than that of the Sun. ...
... They vary in size, mass and temperature, diameters ranging from 450x smaller to over 1000x larger than that of the Sun. ...
R - AMUSE code
... (which we derived). We know the surface temperature (Teff=5780K) is much smaller than its minimum mean temperature (2×106 K). Thus we make two approximations for the surface boundary conditions: ρM=M, ρ = 0 kg/m3 and T = 0K at r=rs i.e. that the star does have a sharp boundary with the surrounding v ...
... (which we derived). We know the surface temperature (Teff=5780K) is much smaller than its minimum mean temperature (2×106 K). Thus we make two approximations for the surface boundary conditions: ρM=M, ρ = 0 kg/m3 and T = 0K at r=rs i.e. that the star does have a sharp boundary with the surrounding v ...
Lecture 6: Stellar Distances and Brightness
... Reliable distances out to 10,000 pc away (includes the Galactic Center at about 8000 pc away). When we know the distances to the stars, we can see the constellations as the three dimensional objects they actually are. Example: Orion. ...
... Reliable distances out to 10,000 pc away (includes the Galactic Center at about 8000 pc away). When we know the distances to the stars, we can see the constellations as the three dimensional objects they actually are. Example: Orion. ...
Earth Science Notes
... in the sky Stars appear close together in the sky, however, they are actually light years from each other ...
... in the sky Stars appear close together in the sky, however, they are actually light years from each other ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.