Bluffing your way in Astronomy: Taurus
... The Pleiades A glorious sight in the Autumn sky for naked eye and binocular observers our Sun’s surface with one square metre of Aldebaran, the bit of Sun would be a blindingly-bright yellow, while the bit of Aldebaran would be a noticeably dimmer orange. However since Aldebaran has a surface area a ...
... The Pleiades A glorious sight in the Autumn sky for naked eye and binocular observers our Sun’s surface with one square metre of Aldebaran, the bit of Sun would be a blindingly-bright yellow, while the bit of Aldebaran would be a noticeably dimmer orange. However since Aldebaran has a surface area a ...
Doppler Effect - SAVE MY EXAMS!
... Treated as a single source, the Andromeda galaxy has an apparent magnitude of 3.54 and an absolute magnitude of –20.62. (a) ...
... Treated as a single source, the Andromeda galaxy has an apparent magnitude of 3.54 and an absolute magnitude of –20.62. (a) ...
The Southern Winter PDF
... a much greater area than the better-known Horsehead Nebula in Orion (p. 56). The smaller complex of blue and faint yellow reflection clouds in the upper left corner, in the horse’s neck, is known as IC 4601. Adjoining it near the left edge of the image is the faint red outline of the dark cloud Barn ...
... a much greater area than the better-known Horsehead Nebula in Orion (p. 56). The smaller complex of blue and faint yellow reflection clouds in the upper left corner, in the horse’s neck, is known as IC 4601. Adjoining it near the left edge of the image is the faint red outline of the dark cloud Barn ...
December 2015
... What's Up? - The Christmas Tree Cluster In the Winter constellation of the Unicorn (Monoceros) east of Orion lies NGC 2264, the Christmas Tree Cluster. Discovered by William Herschel around Christmas Eve in 1783. Its starry evergreen tree shape was later given an official chart name by L.S. Copeland ...
... What's Up? - The Christmas Tree Cluster In the Winter constellation of the Unicorn (Monoceros) east of Orion lies NGC 2264, the Christmas Tree Cluster. Discovered by William Herschel around Christmas Eve in 1783. Its starry evergreen tree shape was later given an official chart name by L.S. Copeland ...
Apparent Magnitude
... reactions take place. It is very hot but its small size gives it a very small luminosity. As white dwarfs have mass comparable to the Sun's and their volume is comparable to the Earth's, they are very dense. ...
... reactions take place. It is very hot but its small size gives it a very small luminosity. As white dwarfs have mass comparable to the Sun's and their volume is comparable to the Earth's, they are very dense. ...
Tutorial: Luminosity
... However, the “brightness” of a star decreases as one moves farther and farther away. If a sphere of radius d is drawn around the star, it should be clear that the energy/sec through the surface of this sphere is the same as the energy/sec emitted through the surface of the star, since there is no me ...
... However, the “brightness” of a star decreases as one moves farther and farther away. If a sphere of radius d is drawn around the star, it should be clear that the energy/sec through the surface of this sphere is the same as the energy/sec emitted through the surface of the star, since there is no me ...
Chapter 10: The Stars
... • If the distance to Star A is 10 times greater than the distance to star B, and the 2 stars have the same luminosity, how would their apparent brightness ...
... • If the distance to Star A is 10 times greater than the distance to star B, and the 2 stars have the same luminosity, how would their apparent brightness ...
The eleventh annual AST poster session - Home
... volume. Astronomers can figure out the age of the stars by gauging the temperature in Kelvin: The higher the temperature of the star, the younger the star; the lower the temperature, the older the star. The cluster’s existence can best be compared to a burning candle, as the flame dies out over time ...
... volume. Astronomers can figure out the age of the stars by gauging the temperature in Kelvin: The higher the temperature of the star, the younger the star; the lower the temperature, the older the star. The cluster’s existence can best be compared to a burning candle, as the flame dies out over time ...
Star formation and lifetimes
... Star A has a mass of 5 solar masses and Star B has a mass of 10 solar masses. How will the fusion rate of Star A compare to the fusion rate of Star B? 1. Star A’s fusion rate will be more than two times slower than that of Star B. 2. Star A’s fusion rate will be two times slower than that of Star B ...
... Star A has a mass of 5 solar masses and Star B has a mass of 10 solar masses. How will the fusion rate of Star A compare to the fusion rate of Star B? 1. Star A’s fusion rate will be more than two times slower than that of Star B. 2. Star A’s fusion rate will be two times slower than that of Star B ...
the star
... • The sun – a typical yellow dwarf star. Type G2 with 8 planets • Proxima Centauri – closest of the triplet of stars loosely known as alpha-Centauri Proxima Centauri is a faint red star that orbits Alpha-Centauri A and B with a period of about one million years. Proxima Centauri is 4.22 light ye ...
... • The sun – a typical yellow dwarf star. Type G2 with 8 planets • Proxima Centauri – closest of the triplet of stars loosely known as alpha-Centauri Proxima Centauri is a faint red star that orbits Alpha-Centauri A and B with a period of about one million years. Proxima Centauri is 4.22 light ye ...
STAR FORMATION (Ch. 19)
... return to this later, too). Make sure you understand the H-R diagrams in Figs. 19.18-19.19. It is important to see that the simplest ideas about the lifetimes of stars predict the “peeling off” of the main sequence with age, but you can only observe this in clusters, because all the stars there we ...
... return to this later, too). Make sure you understand the H-R diagrams in Figs. 19.18-19.19. It is important to see that the simplest ideas about the lifetimes of stars predict the “peeling off” of the main sequence with age, but you can only observe this in clusters, because all the stars there we ...
TRANSIT
... remaining small angle between the equatorial plane of Saturn in which all the rings and moons lie shows up more obviously. ...
... remaining small angle between the equatorial plane of Saturn in which all the rings and moons lie shows up more obviously. ...
The Zodiac - Alchemical.org
... cultures. It should be noted that the Sun is in this constellation during Winter, the typical rainy season in the Mediterranean and Near East, (not Egypt), a time when water "pours forth" from the sky. In Mesopotamian cultures, the constellation was seen as an overflowing or upset urn of water. Even ...
... cultures. It should be noted that the Sun is in this constellation during Winter, the typical rainy season in the Mediterranean and Near East, (not Egypt), a time when water "pours forth" from the sky. In Mesopotamian cultures, the constellation was seen as an overflowing or upset urn of water. Even ...
Phobos
... New Technology Telescope on La Silla, Chile,and investigated it further with the 8.2-m Very Large Telescope on Paranal. Those follow-up observations confirmed that both objects are young, at the same distance, and much too cool to be stars. From theoretical models, the astronomers estimate that they ...
... New Technology Telescope on La Silla, Chile,and investigated it further with the 8.2-m Very Large Telescope on Paranal. Those follow-up observations confirmed that both objects are young, at the same distance, and much too cool to be stars. From theoretical models, the astronomers estimate that they ...
Stars II. Stellar Physics
... mass there exists only one equilibrium configuration which solves the boundary problem of stellar structure. [In this generality, the theorem is not proven. Local uniqueness can be shown, however. Also, the theorem is based on the wrong assumption that the chemical composition of a star is homogenou ...
... mass there exists only one equilibrium configuration which solves the boundary problem of stellar structure. [In this generality, the theorem is not proven. Local uniqueness can be shown, however. Also, the theorem is based on the wrong assumption that the chemical composition of a star is homogenou ...
Volcanoes and Igneous Activity Earth
... • During their collapse from red giants to white dwarfs, medium-mass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called planetary nebula. ...
... • During their collapse from red giants to white dwarfs, medium-mass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called planetary nebula. ...
Lab 8: Stellar Classification and the H
... etc. In this scheme, our Sun would be labeled a type G2 star. The classification system we use today, called the MK system, adds a Roman numeral to the end of the spectral type, indicating the so-called luminosity class (ex. a I indicates a supergiant, a III a giant star, and a V a main sequence sta ...
... etc. In this scheme, our Sun would be labeled a type G2 star. The classification system we use today, called the MK system, adds a Roman numeral to the end of the spectral type, indicating the so-called luminosity class (ex. a I indicates a supergiant, a III a giant star, and a V a main sequence sta ...
monkeyball_lifecycleofastar
... This phase is huge, our planet would be a grain of sand compared to a red supergiant. ...
... This phase is huge, our planet would be a grain of sand compared to a red supergiant. ...
Phys133 Sample MidTerm #2 Covers Chs.10
... 10) Why did the solar nebula heat up as it collapsed? A) The shock wave from a nearby supernova heated the gas. B) As the cloud shrank, its gravitational potential energy was converted to kinetic energy and then into thermal energy. C) Radiation from other nearby stars that had formed earlier heated ...
... 10) Why did the solar nebula heat up as it collapsed? A) The shock wave from a nearby supernova heated the gas. B) As the cloud shrank, its gravitational potential energy was converted to kinetic energy and then into thermal energy. C) Radiation from other nearby stars that had formed earlier heated ...
Volume 20 Number 4 March 2012 - Forsyth Astronomical Society
... Venus and Jupiter are only 3° apart from the 11th to the 15th. MARS is in the east 3/4 hour after sunset. On March 3rd, it is opposite the Sun as seen from Earth (opposition) and at its brightest for 2012. Mars is in the morning sky until 1 1/2 hours before sunrise. It is at its closest distance fro ...
... Venus and Jupiter are only 3° apart from the 11th to the 15th. MARS is in the east 3/4 hour after sunset. On March 3rd, it is opposite the Sun as seen from Earth (opposition) and at its brightest for 2012. Mars is in the morning sky until 1 1/2 hours before sunrise. It is at its closest distance fro ...
The Sky
... • The stars are scattered randomly on this sphere (except for the Milky Way). • In this randomness, we see pictures: Constellations. ...
... • The stars are scattered randomly on this sphere (except for the Milky Way). • In this randomness, we see pictures: Constellations. ...
etlife_douglas_ewart_short
... One of Jupiter’s moons, Europa, is another candidate The icy crust of the moon is covered in ‘cracks’ due to the tides, and beneath the crust we think friction has melted the ice, resulting in a ...
... One of Jupiter’s moons, Europa, is another candidate The icy crust of the moon is covered in ‘cracks’ due to the tides, and beneath the crust we think friction has melted the ice, resulting in a ...
Handout Life of Stars
... is formed when gravity causes the dust and gas of a nebula to clump together in a process called accretion. As gravity continues to pull ever more matter inward towards the core, its temperature, pressure and density increases. If a critical temperature in the core of a protostar is reached, then nu ...
... is formed when gravity causes the dust and gas of a nebula to clump together in a process called accretion. As gravity continues to pull ever more matter inward towards the core, its temperature, pressure and density increases. If a critical temperature in the core of a protostar is reached, then nu ...
Jul - Wadhurst Astronomical Society
... to become a super-nova soon and at 640 light years away, may already have done so, although the light hasn’t reached us yet. On the same size scale by comparison, the Sun is so small it is almost lost. Brian then looked at the bigger picture starting with the Milky Way of which the Solar System is o ...
... to become a super-nova soon and at 640 light years away, may already have done so, although the light hasn’t reached us yet. On the same size scale by comparison, the Sun is so small it is almost lost. Brian then looked at the bigger picture starting with the Milky Way of which the Solar System is o ...
Constellation Argo Navis
... Homunculus Nebula is a planetary nebula visible to the naked eye that is being ejected by the erratic luminous blue variable star Eta Carinae, the most massive visible star known. Eta Carinae is so massive that it has reached the theoretical upper limit for the mass of a star and is therefore unstab ...
... Homunculus Nebula is a planetary nebula visible to the naked eye that is being ejected by the erratic luminous blue variable star Eta Carinae, the most massive visible star known. Eta Carinae is so massive that it has reached the theoretical upper limit for the mass of a star and is therefore unstab ...
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.