CHAPTER 10, Stellar Motions
... Astronomers have now detected hundreds of planetary bodies, called exoplanets, moving in orbit around other stars. Most of these are more massive than any of the Sun's planets. These planetary-like bodies are detected because of their strong gravitational interactions with their stars. However, tech ...
... Astronomers have now detected hundreds of planetary bodies, called exoplanets, moving in orbit around other stars. Most of these are more massive than any of the Sun's planets. These planetary-like bodies are detected because of their strong gravitational interactions with their stars. However, tech ...
doc - IAC
... same way as planetary masses are measured. The most massive ones are 100 to 150 times heavier than the Sun. The most massive stars evolve more rapidly than those of low mass. Does this in any way affect the galaxies in which they are found? Indeed it does. Massive stars have very short lifetimes, at ...
... same way as planetary masses are measured. The most massive ones are 100 to 150 times heavier than the Sun. The most massive stars evolve more rapidly than those of low mass. Does this in any way affect the galaxies in which they are found? Indeed it does. Massive stars have very short lifetimes, at ...
Lec 25.2- STELLAR EVOLUTION SUMMARY
... magnitude that they overcome the collective electron pressure which halts the collapse of smaller stars. The core's collapse may continue until its density is so high that its electrons are driven into atomic nuclei which are then transmuted into neutrons, creating in effect an atomic nucleus of ast ...
... magnitude that they overcome the collective electron pressure which halts the collapse of smaller stars. The core's collapse may continue until its density is so high that its electrons are driven into atomic nuclei which are then transmuted into neutrons, creating in effect an atomic nucleus of ast ...
E8B6_CRT_CR_MSTIPS_Final
... 1. Use the following table and information to answer the questions below. Brightness of stars is traditionally expressed as magnitude. The more negative the value of magnitude, the brighter the star. The more positive the value of magnitude, the dimmer the star. Two types of magnitude are used when ...
... 1. Use the following table and information to answer the questions below. Brightness of stars is traditionally expressed as magnitude. The more negative the value of magnitude, the brighter the star. The more positive the value of magnitude, the dimmer the star. Two types of magnitude are used when ...
Measuring Stars
... Luminosity from Spectral Class Suppose you have a G2 star. What is its luminosity? •90% of all stars are main sequence G2: L L B5: L 800 L K5: L 0.1L •For main sequence stars, the spectral type tells you the luminosity •Together with brightness, this tells you the distance ...
... Luminosity from Spectral Class Suppose you have a G2 star. What is its luminosity? •90% of all stars are main sequence G2: L L B5: L 800 L K5: L 0.1L •For main sequence stars, the spectral type tells you the luminosity •Together with brightness, this tells you the distance ...
Exercise 4 (Stars and the universe) Suggested answers
... (c) The graph repeats in 96 hours. Therefore the time T for the planet to make one complete revolution is 96 hours. (d) By T2 = ...
... (c) The graph repeats in 96 hours. Therefore the time T for the planet to make one complete revolution is 96 hours. (d) By T2 = ...
Sample multiple choice questions for Exam 2
... 1. Most of the bright stars in the sky are bright because they are close (within 10 light years) to our Sun. a) correct b) wrong: Most are intrinsically bright and lie far from the Sun. c) wrong: Close means closer than 1 parsec. d) wrong: This is true only for green stars. e) wrong: Both changes c) ...
... 1. Most of the bright stars in the sky are bright because they are close (within 10 light years) to our Sun. a) correct b) wrong: Most are intrinsically bright and lie far from the Sun. c) wrong: Close means closer than 1 parsec. d) wrong: This is true only for green stars. e) wrong: Both changes c) ...
Test 2 Review Topics
... 38. What is the only direct method for measuring distance? a. Sketch the system that shows this measurement. b. Recall the formula. c. Be able to calculate a distance in parsecs and light years. 39. Differentiate between intrinsic and apparent brightness. 40. Differentiate between luminosity and flu ...
... 38. What is the only direct method for measuring distance? a. Sketch the system that shows this measurement. b. Recall the formula. c. Be able to calculate a distance in parsecs and light years. 39. Differentiate between intrinsic and apparent brightness. 40. Differentiate between luminosity and flu ...
TAP 702- 6: Binary stars - Teaching Advanced Physics
... shifts are due to stars moving away from Earth, blue shifts are due to stars ...
... shifts are due to stars moving away from Earth, blue shifts are due to stars ...
cancer, la constelac..
... Gamma () and delta () Cancri are known as Asellus borealis and Asellus australis respectively. Their names mean the Northern Donkey and the Southern Donkey, and they are eating from the large open star cluster called Praesaepe, which means "the Manger." Some stories say they are the donkeys in the ...
... Gamma () and delta () Cancri are known as Asellus borealis and Asellus australis respectively. Their names mean the Northern Donkey and the Southern Donkey, and they are eating from the large open star cluster called Praesaepe, which means "the Manger." Some stories say they are the donkeys in the ...
Slide 1
... distances in the universe) must be far outside the Milky Way, because of its great distance (which he was able to calculate). By the way he developed the method for calculating star distance. When Hubble reported his findings the following year, astronomers realized that they had misnamed the Androm ...
... distances in the universe) must be far outside the Milky Way, because of its great distance (which he was able to calculate). By the way he developed the method for calculating star distance. When Hubble reported his findings the following year, astronomers realized that they had misnamed the Androm ...
Birth and Death of Stars
... massive to become stable neutron stars. If the remaining core is > 3 times the mass of the sun, the star may contract further under its greater gravity. The force of contraction crushes the dense core and creates an object so massive and dense that even light cannot escape its gravity. These are cal ...
... massive to become stable neutron stars. If the remaining core is > 3 times the mass of the sun, the star may contract further under its greater gravity. The force of contraction crushes the dense core and creates an object so massive and dense that even light cannot escape its gravity. These are cal ...
red giant - Teacher Pages
... reaction carried out within the sun? What is the widely accepted scientific model that describes the formation of the solar ...
... reaction carried out within the sun? What is the widely accepted scientific model that describes the formation of the solar ...
LAB: Star Classification
... ScienceDaily (Dec. 12, 2008) — Astronomy & Astrophysics is publishing observations of the white dwarf KPD 0005+5106. The team who present these observations show that this white dwarf is among the hottest stars known so far, with a temperature of 200,000º K at its surface. Stars of intermediate mass ...
... ScienceDaily (Dec. 12, 2008) — Astronomy & Astrophysics is publishing observations of the white dwarf KPD 0005+5106. The team who present these observations show that this white dwarf is among the hottest stars known so far, with a temperature of 200,000º K at its surface. Stars of intermediate mass ...
Astr 40 Final Exam Review ()
... binaries, optical doubles are not true binaries because they are not gravitationally bound. 50. Because stars in clusters all have similar age and distance, the main underlying physical cause of their different appearances is their mass. 51. If one region of the sky shows nearby stars but no distant ...
... binaries, optical doubles are not true binaries because they are not gravitationally bound. 50. Because stars in clusters all have similar age and distance, the main underlying physical cause of their different appearances is their mass. 51. If one region of the sky shows nearby stars but no distant ...
Test 2, November 14, 2016 - Physics@Brock
... (b) new spectral lines appear in the spectrum. (c) it is blueshifted. (d) photons of certain wavelengths are absorbed. 37. What is the most abundant chemical element in the main sequence stars? (a) Oxygen (O). (b) Carbon (C). (c) Helium (He) (d) Hydrogen (H). 38. The absorption lines of a main seque ...
... (b) new spectral lines appear in the spectrum. (c) it is blueshifted. (d) photons of certain wavelengths are absorbed. 37. What is the most abundant chemical element in the main sequence stars? (a) Oxygen (O). (b) Carbon (C). (c) Helium (He) (d) Hydrogen (H). 38. The absorption lines of a main seque ...
2. A giant hand took one of the planets discovered
... 2. A giant hand took one of the planets discovered around other stars and put it in the solar system at the same distance from the sun as from its star. The mass of the planet is approximately that of Jupiter and the orbit is approximately that of Earth. These are the “hot Jupiters”, as big as Jupit ...
... 2. A giant hand took one of the planets discovered around other stars and put it in the solar system at the same distance from the sun as from its star. The mass of the planet is approximately that of Jupiter and the orbit is approximately that of Earth. These are the “hot Jupiters”, as big as Jupit ...
1 - TeacherWeb
... 33. List 4 forms of light or particles that come from the sun. 50. Give an example of an unstable metal. 34. How does solar energy reach the Earth? 51. Draw and label the modern version of an atom. 35. What happens to a super giant star at the end of its life cycle? 36. What is a black hole? 37. Wh ...
... 33. List 4 forms of light or particles that come from the sun. 50. Give an example of an unstable metal. 34. How does solar energy reach the Earth? 51. Draw and label the modern version of an atom. 35. What happens to a super giant star at the end of its life cycle? 36. What is a black hole? 37. Wh ...
Universe and Star Formation - White Plains Public Schools
... • 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. ...
powerpoint - Physics @ IUPUI
... Why variable stars are important • Variable stars have a relationship between their period of pulsation and their absolute brightness. • The longer the period, the bigger the star is, and the brighter it is (sort of like a bigger bell has a larger period of vibration). • This allows us to measure d ...
... Why variable stars are important • Variable stars have a relationship between their period of pulsation and their absolute brightness. • The longer the period, the bigger the star is, and the brighter it is (sort of like a bigger bell has a larger period of vibration). • This allows us to measure d ...
Analyzing Spectra
... black lines are caused by elements in the star's atmosphere. As light emitted from a star passes through the star's atmosphere, some of it is absorbed by elements in the atmosphere. The wavelengths of the light that are absorbed appear as dark lines in the spectrum. Each element absorbs certain wave ...
... black lines are caused by elements in the star's atmosphere. As light emitted from a star passes through the star's atmosphere, some of it is absorbed by elements in the atmosphere. The wavelengths of the light that are absorbed appear as dark lines in the spectrum. Each element absorbs certain wave ...
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.