WEBDA - a tool for CP star research in open clusters
... Abstract. WEBDA (http://www.univie.ac.at/webda) is a site devoted to stellar observational data, such as chemically peculiar stars, in stellar clusters in the Milky Way and the Small Magellanic Cloud. It is intended to provide a reliable synthesis of the available data and knowledge about these obje ...
... Abstract. WEBDA (http://www.univie.ac.at/webda) is a site devoted to stellar observational data, such as chemically peculiar stars, in stellar clusters in the Milky Way and the Small Magellanic Cloud. It is intended to provide a reliable synthesis of the available data and knowledge about these obje ...
Protostar, Initial mass, Main Sequence
... Red dwarf stars with less than half a solar mass do not achieve red giant status they begin to fade as soon as their hydrogen fuel is exhausted. White dwarfs, planetary nebulae Our Sun, and any star with similar mass, will fuse to carbon and, possibly, oxygen and neon before shrinking to become a wh ...
... Red dwarf stars with less than half a solar mass do not achieve red giant status they begin to fade as soon as their hydrogen fuel is exhausted. White dwarfs, planetary nebulae Our Sun, and any star with similar mass, will fuse to carbon and, possibly, oxygen and neon before shrinking to become a wh ...
Interactive Vocabulary Review for Outer Space Indicator
... A natural, luminous, celestial body is better known as a STAR! ...
... A natural, luminous, celestial body is better known as a STAR! ...
22 Stellar Remnant/HR Diagram
... • Each collision has a chance to send the particle into an unstable orbit (to center) • Or to send it into the disk • Eventually all particles are in the disk or at the center ...
... • Each collision has a chance to send the particle into an unstable orbit (to center) • Or to send it into the disk • Eventually all particles are in the disk or at the center ...
HOMEWORK 5 SOLUTIONS CHAPTER 9 4.A A red giant star will
... the Earth’s orbit will not change. Since the Sun is so far away, it appears to the Earth to be a point source. The black hole will also appear to be a point source so the orbit will not change. CHAPTER 11 1.C The halo is home to old, metal-poor stars. Globular clusters contain some of the oldest sta ...
... the Earth’s orbit will not change. Since the Sun is so far away, it appears to the Earth to be a point source. The black hole will also appear to be a point source so the orbit will not change. CHAPTER 11 1.C The halo is home to old, metal-poor stars. Globular clusters contain some of the oldest sta ...
Solutions 5
... In high-mass stars everything takes place more rapidly. Greater mass means greater gravity and the protostar process is accelerated. Greater mass leads to greater core pressures and temperatures, thus, a hotter more luminous star. The greater mass star consumes the available hydrogen at a much highe ...
... In high-mass stars everything takes place more rapidly. Greater mass means greater gravity and the protostar process is accelerated. Greater mass leads to greater core pressures and temperatures, thus, a hotter more luminous star. The greater mass star consumes the available hydrogen at a much highe ...
Star Life Cycle
... A Red Giant Star is a main sequence star that is not longer in equilibrium. There is a ...
... A Red Giant Star is a main sequence star that is not longer in equilibrium. There is a ...
Death of Low Mass Stars 8 Solar Masses or less
... size of Earth with a density of 1010 kg/m3 (an object with the volume of 1 grape would have a mass of 1 ton… that’s like the mass of an elephant!!!). • Shines from stored heat, no fusion occurs in the core… the star is officially dead :( • Usually, but not always, seen in the center of planetary neb ...
... size of Earth with a density of 1010 kg/m3 (an object with the volume of 1 grape would have a mass of 1 ton… that’s like the mass of an elephant!!!). • Shines from stored heat, no fusion occurs in the core… the star is officially dead :( • Usually, but not always, seen in the center of planetary neb ...
Using a Planisphere - Amateur Observers` Society of New York
... Wheel). Print the accompanying pieces and follow the instructions for construction. It will help you find the stars and constellations at any time during the year from our latitude. Notice how the night sky changes each hour, day and month as the stars continually rise in the East and set in the Wes ...
... Wheel). Print the accompanying pieces and follow the instructions for construction. It will help you find the stars and constellations at any time during the year from our latitude. Notice how the night sky changes each hour, day and month as the stars continually rise in the East and set in the Wes ...
1. absolute brightness -
... to their spectral characteristics. • They are classified according to the spectral lines observed, originally the amount of Hydrogen the lines seemed to indicate. • Today they are ranked in order of surface temperature. O, B, A, F, G, K, M from hottest to coolest. ...
... to their spectral characteristics. • They are classified according to the spectral lines observed, originally the amount of Hydrogen the lines seemed to indicate. • Today they are ranked in order of surface temperature. O, B, A, F, G, K, M from hottest to coolest. ...
Make one copy for each student on plain paper. Life Cycle of Star
... Make one copy for each student on plain paper. ...
... Make one copy for each student on plain paper. ...
Study Guide
... chromosphere (2), photosphere (1), solar flare(8), prominence (5), and sunspot (3). ...
... chromosphere (2), photosphere (1), solar flare(8), prominence (5), and sunspot (3). ...
Life Cycle of a Star worksheet
... Learning Goal: I can describe the life cycle of various types of stars. All stars start as a ______________. A ______________ is a large cloud of gas and dust. Gravity can pull some of the gas and dust in a nebula together. The contracting cloud is then called a ___________. A protostar is the earli ...
... Learning Goal: I can describe the life cycle of various types of stars. All stars start as a ______________. A ______________ is a large cloud of gas and dust. Gravity can pull some of the gas and dust in a nebula together. The contracting cloud is then called a ___________. A protostar is the earli ...
A star by any other name - Baruch Sterman
... In the Big Dipper, the dim companion to bright Mizar is named Alcor. (In ancient times, this pair functioned as a kind of eye chart, since only those with keen vision can discern that there are indeed two stars). The original name was Al Khiwwar (= chiver, faint). Sometimes the Hebrew link is more c ...
... In the Big Dipper, the dim companion to bright Mizar is named Alcor. (In ancient times, this pair functioned as a kind of eye chart, since only those with keen vision can discern that there are indeed two stars). The original name was Al Khiwwar (= chiver, faint). Sometimes the Hebrew link is more c ...
Star Life Cycles WS
... 5. A red giant is (hotter, cooler) due the (contraction, expansion) of gases in the outer layer. 6. At the end of its life, a low mass star (1.4 SM) shrinks to become a ______________. 7. At the end, a very MASSIVE star will follow sequence: a. white dwarf, planetary nebula, neutron star b. red gian ...
... 5. A red giant is (hotter, cooler) due the (contraction, expansion) of gases in the outer layer. 6. At the end of its life, a low mass star (1.4 SM) shrinks to become a ______________. 7. At the end, a very MASSIVE star will follow sequence: a. white dwarf, planetary nebula, neutron star b. red gian ...
lecture12
... A classification of the stellar black body For historical reasons, astronomers classify the temperatures of stars on a scale defined by spectral types, called O B A F G K M, ranging from the hottest (type O) to the coolest (type M) stars. ...
... A classification of the stellar black body For historical reasons, astronomers classify the temperatures of stars on a scale defined by spectral types, called O B A F G K M, ranging from the hottest (type O) to the coolest (type M) stars. ...
1. Star A has a distance of 3 parsecs. What is its parallax angle? 1a
... Which of the following stars is the most massive: a) G2V b) K8V c) O1V? c) because its the hottest and hence brightest and hence most luminous. What do all the stars in question 13) have in common? They all lie on the main sequence and hence are burning hydrogen to helium on the main sequence. Star ...
... Which of the following stars is the most massive: a) G2V b) K8V c) O1V? c) because its the hottest and hence brightest and hence most luminous. What do all the stars in question 13) have in common? They all lie on the main sequence and hence are burning hydrogen to helium on the main sequence. Star ...
Star Life Cycles
... A white dwarf is a star that has exhausted most or all of its nuclear fuel and has collapsed to a very small size; such a star is near its final stage of life. White dwarfs eventually become black dwarfs, which is a white dwarf that has cooled down enough that it no longer emits light. Interes ...
... A white dwarf is a star that has exhausted most or all of its nuclear fuel and has collapsed to a very small size; such a star is near its final stage of life. White dwarfs eventually become black dwarfs, which is a white dwarf that has cooled down enough that it no longer emits light. Interes ...
May
... NGC4656 is a type SBm barred spiral galaxy in the constellation Canes Venatici (KAY-neez- vë-NAT-ih-si). Popularly known as the Hockey Stick Galaxy, the key features are the angled tilt of the disk and the apparent offset of the core. If observing at low magnification look in the same field of view ...
... NGC4656 is a type SBm barred spiral galaxy in the constellation Canes Venatici (KAY-neez- vë-NAT-ih-si). Popularly known as the Hockey Stick Galaxy, the key features are the angled tilt of the disk and the apparent offset of the core. If observing at low magnification look in the same field of view ...
Starry Night¨ Times - October 2008
... monoxide and other complex molecules have also been detected. When viewed through a large telescope, the cloud takes on a wonderful greenish hue. The energy that keeps the nebula glowing so bright comes from the very hot, young stars in the brightest part of the cloud. Known as the Trapezium, this f ...
... monoxide and other complex molecules have also been detected. When viewed through a large telescope, the cloud takes on a wonderful greenish hue. The energy that keeps the nebula glowing so bright comes from the very hot, young stars in the brightest part of the cloud. Known as the Trapezium, this f ...
Ourdraft
... distant galaxy? It’s important to remember that you can’t perceive depth in space; everything is so far away that every object looks like a point source, a tiny dot of light. And it could be a certain magnitude (brightness) because it is really far away but very bright, or not so bright but very clo ...
... distant galaxy? It’s important to remember that you can’t perceive depth in space; everything is so far away that every object looks like a point source, a tiny dot of light. And it could be a certain magnitude (brightness) because it is really far away but very bright, or not so bright but very clo ...
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.