Constituents of the Milky Way
... Emission from H I Gas When the electron decays, a 21 cm photon (in the radio) is produced. Radio waves are unaffected by dust, so we can see the emission from H I across the galaxy. ...
... Emission from H I Gas When the electron decays, a 21 cm photon (in the radio) is produced. Radio waves are unaffected by dust, so we can see the emission from H I across the galaxy. ...
SNC 1D1 Space Unit Review Answers How long does it take the
... -Condensed grains from nebula collide and stick to form planetesimals -These planetesimals grew by further collisions called accretion -Gravity holds them together, when big enough some planetesimals eventually become very small planets. -As rotating nebular disk cooled, the only metals and rocks co ...
... -Condensed grains from nebula collide and stick to form planetesimals -These planetesimals grew by further collisions called accretion -Gravity holds them together, when big enough some planetesimals eventually become very small planets. -As rotating nebular disk cooled, the only metals and rocks co ...
Answer to question 1 - Northwestern University
... •The result is that the envelope then comes falling down, • Over shoots inward • Then starts over ...
... •The result is that the envelope then comes falling down, • Over shoots inward • Then starts over ...
PHYS 2421 EXAM #5 Wednesday, November 11
... 98. To alleviate the traffic congestion between two cities such as Boston and Washington, D.C., engineers have proposed building a rail tunnel along a chord line connecting the cities (Fig. 13-55). A train, unpropelled by any engine and starting from rest, would fall through the first half of the tu ...
... 98. To alleviate the traffic congestion between two cities such as Boston and Washington, D.C., engineers have proposed building a rail tunnel along a chord line connecting the cities (Fig. 13-55). A train, unpropelled by any engine and starting from rest, would fall through the first half of the tu ...
Final Exam Space Unit Review
... Azimuth: angle clockwise from North, the direction we must face to see the star (i.e. 180oS or “at an azimuth of 180oS). Azimuth coordinates MUST have degrees PLUS direction. Do the 3 practice problems on pg. 359 and the Alt-Azimuth Coordinates Practice Sheet (BLM 5Draw and label “altitude” and “a ...
... Azimuth: angle clockwise from North, the direction we must face to see the star (i.e. 180oS or “at an azimuth of 180oS). Azimuth coordinates MUST have degrees PLUS direction. Do the 3 practice problems on pg. 359 and the Alt-Azimuth Coordinates Practice Sheet (BLM 5Draw and label “altitude” and “a ...
What is your real star sign - teacher notes
... put a planetarium into every home and school, which can be made spectacular with the use of a data projector. They enable you and your classes to speed up the movements of the sky, watching changes through the night or through the seasons. Planetarium computer programs can be a great help in underst ...
... put a planetarium into every home and school, which can be made spectacular with the use of a data projector. They enable you and your classes to speed up the movements of the sky, watching changes through the night or through the seasons. Planetarium computer programs can be a great help in underst ...
Stellar Parallax
... Stellar Brightness We do this with the following arbitarary definition:M = m when the star is viewed from a distance d = 10 pc. Then M = m -5 log10d + 5 We now have a link between M,m and d where d is in parsecs. [Note: we have assumed that the inverse square law is the only reason for the dimming ...
... Stellar Brightness We do this with the following arbitarary definition:M = m when the star is viewed from a distance d = 10 pc. Then M = m -5 log10d + 5 We now have a link between M,m and d where d is in parsecs. [Note: we have assumed that the inverse square law is the only reason for the dimming ...
PHYSICS 111 HOMEWORK SOLUTION #13 May 1, 2013
... How much work is done by the Moon’s gravitational field as a 995 kg meteor comes in from outer space and impacts on the Moon’s surface? ...
... How much work is done by the Moon’s gravitational field as a 995 kg meteor comes in from outer space and impacts on the Moon’s surface? ...
CHAPTER 14
... 0.001 solar masses.) After a brief initial phase where some deuterium is burned, brown dwarfs continue to cool. 4. A brown dwarf (GL229B) was first seen in 1994. Its mass is between 20 and 50 times that of Jupiter. 5. Most known brown dwarfs are isolated. Their formation is most likely similar to th ...
... 0.001 solar masses.) After a brief initial phase where some deuterium is burned, brown dwarfs continue to cool. 4. A brown dwarf (GL229B) was first seen in 1994. Its mass is between 20 and 50 times that of Jupiter. 5. Most known brown dwarfs are isolated. Their formation is most likely similar to th ...
STAR FORMATION (Ch. 19) - University of Texas Astronomy Home
... globules (dark clouds) and giant gaseous pillars (emission nebulae), followed by circumstellar disks, and progressing to evolved massive stars in the young starburst cluster.To the upper right of center is the evolved blue supergiant called Sher 25. The star has a unique circumstellar ring of glowin ...
... globules (dark clouds) and giant gaseous pillars (emission nebulae), followed by circumstellar disks, and progressing to evolved massive stars in the young starburst cluster.To the upper right of center is the evolved blue supergiant called Sher 25. The star has a unique circumstellar ring of glowin ...
Beyond Our Solar System
... • Notice the red color. – This is an infrared photograph in which healthy green leaves and crops show up as red. – Human eyes are sensitive to only a narrow range of colors. – As you explore the universe, you will learn to use a wide range of ‘colors’—from X rays to radio waves—to reveal sights inv ...
... • Notice the red color. – This is an infrared photograph in which healthy green leaves and crops show up as red. – Human eyes are sensitive to only a narrow range of colors. – As you explore the universe, you will learn to use a wide range of ‘colors’—from X rays to radio waves—to reveal sights inv ...
Spectroscopy – the study of the colors of light (the spectrum) given
... The width of the spectral line seen in the spectra of stars is determined by the density of the gas producing the light. The densities of these gases is less for a red giant and more for a white dwarf. ...
... The width of the spectral line seen in the spectra of stars is determined by the density of the gas producing the light. The densities of these gases is less for a red giant and more for a white dwarf. ...
January 2012 - Powerhouse Museum
... This star chart shows the stars and constellations visible in the night sky for Sydney, Melbourne, Canberra, Hobart and Adelaide for January 2012 at about 8.30 pm (summer time) and at about 7.30 pm (local standard time) for Perth and Brisbane. For Darwin and similar locations, the chart will still a ...
... This star chart shows the stars and constellations visible in the night sky for Sydney, Melbourne, Canberra, Hobart and Adelaide for January 2012 at about 8.30 pm (summer time) and at about 7.30 pm (local standard time) for Perth and Brisbane. For Darwin and similar locations, the chart will still a ...
Quiz on Chapter 11
... 11-13. White dwarfs usually have surface temperatures well above 10,000 K, yet they have extremely low luminosity. Why is this? a) They are very far away. b) They have a very large surface area. c) They emit most of their radiation in the far infrared. d) They have a very small surface area. X 11-14 ...
... 11-13. White dwarfs usually have surface temperatures well above 10,000 K, yet they have extremely low luminosity. Why is this? a) They are very far away. b) They have a very large surface area. c) They emit most of their radiation in the far infrared. d) They have a very small surface area. X 11-14 ...
Homework problems for Quiz 2: AY5 Spring 2013
... lifetime of the Sun is 10 billion years). Lifetime = 4/5000 ×1010 = 8 × 106 years 5. Label the following True (T) or False (F) F More massive stars have lower temperatures in their cores T The reason main-sequence stars do not collapse due to gravity is the thermal pressure of the gases they are com ...
... lifetime of the Sun is 10 billion years). Lifetime = 4/5000 ×1010 = 8 × 106 years 5. Label the following True (T) or False (F) F More massive stars have lower temperatures in their cores T The reason main-sequence stars do not collapse due to gravity is the thermal pressure of the gases they are com ...
The Universe and Galaxies - West Jefferson Local Schools
... - ________ - grouping of millions or billions of stars, and dust and gas held together by gravity - there are an estimated ________ billion galaxies in the universe A. 3 Types of Galaxies - classified by ________ 1. ________ - disk shaped with spiral arms of dust and gas (fig 26-15, pg. 831) - dust ...
... - ________ - grouping of millions or billions of stars, and dust and gas held together by gravity - there are an estimated ________ billion galaxies in the universe A. 3 Types of Galaxies - classified by ________ 1. ________ - disk shaped with spiral arms of dust and gas (fig 26-15, pg. 831) - dust ...
The Universe and Galaxies - West Jefferson Local Schools
... - generally have ________ stars (reddish in color) - Range of sizes a. ________ - trillions of stars, millions of light years in diameter b. ________ - millions of stars, thousands of light years in diameter 3. Irregular (fig. 26-17, pg. 832) least common type of galaxy - ________ well defined sha ...
... - generally have ________ stars (reddish in color) - Range of sizes a. ________ - trillions of stars, millions of light years in diameter b. ________ - millions of stars, thousands of light years in diameter 3. Irregular (fig. 26-17, pg. 832) least common type of galaxy - ________ well defined sha ...
Characteristics of Stars - Laconia School District
... • The H-R diagram can be thought of as a graph, with color (temperature) on the x-axis and luminosity on the y-axis. Since stars go through a definite "life cycle" which can be mapped on the H-R diagram, a star's location on the diagram can indicate both its mass and its relative age. ...
... • The H-R diagram can be thought of as a graph, with color (temperature) on the x-axis and luminosity on the y-axis. Since stars go through a definite "life cycle" which can be mapped on the H-R diagram, a star's location on the diagram can indicate both its mass and its relative age. ...
Naked Eye, Binocular, or Small Backyard Telescope Night Sky
... Basic Scientific Content Information about what you can see in the night sky with your naked eye, binoculars, or a small telescope: 1.) The Moon – The Moon is the only natural satelli ...
... Basic Scientific Content Information about what you can see in the night sky with your naked eye, binoculars, or a small telescope: 1.) The Moon – The Moon is the only natural satelli ...
688 Chapter 21 Review - District 196 e
... 3.8 × 1026 watts and the distance between the sun and Earth is 150 × 109 meters. b. Suppose Earth were orbiting Alpha Centaurii A, the nearest star to Earth. This star has a luminosity of 5.7 × 1026 watts. Calculate the intensity of light at Earth’s orbit around Alpha Centaurii A and discuss whether ...
... 3.8 × 1026 watts and the distance between the sun and Earth is 150 × 109 meters. b. Suppose Earth were orbiting Alpha Centaurii A, the nearest star to Earth. This star has a luminosity of 5.7 × 1026 watts. Calculate the intensity of light at Earth’s orbit around Alpha Centaurii A and discuss whether ...
The Temperature of Stars
... – Some stars are always visible in the night sky. – These stars never pass below the horizon. – In the Northern Hemisphere, the movement of these stars makes them appear to circle the North Star. – These circling stars are called circumpolar stars. ...
... – Some stars are always visible in the night sky. – These stars never pass below the horizon. – In the Northern Hemisphere, the movement of these stars makes them appear to circle the North Star. – These circling stars are called circumpolar stars. ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.