Answer titese questions on a piece of loose leaf paper.
... 15. What force pulls gas and dust together to begin forming stais? 16. A star is "bom** when what process begins? 17. - Stars with less mass "live" than stars witli more mass. 18. When a star begins to run out of fiicl, its outer layers 19. Name the stages in the "h'fe** of a low/medium mass star 20 ...
... 15. What force pulls gas and dust together to begin forming stais? 16. A star is "bom** when what process begins? 17. - Stars with less mass "live" than stars witli more mass. 18. When a star begins to run out of fiicl, its outer layers 19. Name the stages in the "h'fe** of a low/medium mass star 20 ...
ppt
... How can we test theories of star evolution? • Binaries help, because one can get mass so that theories can be tested • But stars change so slowly, it is impossible to test theories by watching just one star move through phases • Fortunately, there are 1011 stars in our Galaxy, all with a range of ma ...
... How can we test theories of star evolution? • Binaries help, because one can get mass so that theories can be tested • But stars change so slowly, it is impossible to test theories by watching just one star move through phases • Fortunately, there are 1011 stars in our Galaxy, all with a range of ma ...
Chapter 15 Surveying the Stars
... • Stellar properties depend on both mass and age: those that have finished fusing H to He in their cores are no longer on the main sequence • All stars become larger and redder after exhausting their core hydrogen: giants and supergiants • Most stars end up small and white after fusion has ceased: w ...
... • Stellar properties depend on both mass and age: those that have finished fusing H to He in their cores are no longer on the main sequence • All stars become larger and redder after exhausting their core hydrogen: giants and supergiants • Most stars end up small and white after fusion has ceased: w ...
PowerPoint File
... the galactic plane. The distance depends on the type of objects considered, but is roughly 100 – 200 parsecs. The galactic plane is much thinner than it is wide. ...
... the galactic plane. The distance depends on the type of objects considered, but is roughly 100 – 200 parsecs. The galactic plane is much thinner than it is wide. ...
Stars: Their Life and Afterlife
... not only tend to form close together in space, but also in time – and so, for massive stars, they will also die relatively close together in space and time. Superbubbles form from OB associations. OB associations are clusters of massive stars of spectral types – you guessed it – O and B. • O stars a ...
... not only tend to form close together in space, but also in time – and so, for massive stars, they will also die relatively close together in space and time. Superbubbles form from OB associations. OB associations are clusters of massive stars of spectral types – you guessed it – O and B. • O stars a ...
Reading Preview
... A star’s ________ gives clues about the star’s temperature. The coolest stars appear ________. The hottest stars appear ________. Very large stars are called ________ stars or ____________ stars. Our sun is a medium sized ________. Most stars are ________ than the sun. White dwarf stars are abou ...
... A star’s ________ gives clues about the star’s temperature. The coolest stars appear ________. The hottest stars appear ________. Very large stars are called ________ stars or ____________ stars. Our sun is a medium sized ________. Most stars are ________ than the sun. White dwarf stars are abou ...
Lec6
... those that have finished fusing H to He in their cores are no longer on the main sequence • All stars become larger and redder after exhausting their core hydrogen: giants and ...
... those that have finished fusing H to He in their cores are no longer on the main sequence • All stars become larger and redder after exhausting their core hydrogen: giants and ...
h-r_diagram_online_lab
... them on the H-R diagram. Other characteristics, including stellar densities, spectral lines, stellar life times, stellar interiors, types of nuclear processes taking place within the star, and interior ...
... them on the H-R diagram. Other characteristics, including stellar densities, spectral lines, stellar life times, stellar interiors, types of nuclear processes taking place within the star, and interior ...
Milky Way structure
... • What is the closest galaxy to the Milky Way? The new answer to this old question is the Canis Major dwarf galaxy. For many years astronomers thought the Large Magellan Cloud (LMC) was closest, but its title was supplanted in 1994 by the Sagittarius dwarf galaxy. Recent measurements ind ...
... • What is the closest galaxy to the Milky Way? The new answer to this old question is the Canis Major dwarf galaxy. For many years astronomers thought the Large Magellan Cloud (LMC) was closest, but its title was supplanted in 1994 by the Sagittarius dwarf galaxy. Recent measurements ind ...
Life Cycle of a Star
... shrinks, it grows hotter and denser, and a new series of nuclear reactions begin to occur, temporarily halting the collapse of the core. ...
... shrinks, it grows hotter and denser, and a new series of nuclear reactions begin to occur, temporarily halting the collapse of the core. ...
Astronomy
... orbit part of the time • Rotates once every 6 days • Revolves once every 248 years. ...
... orbit part of the time • Rotates once every 6 days • Revolves once every 248 years. ...
Powerpoint
... • Masses of stars in binary systems can be measured. • Mass determines where star lies on main sequence. ...
... • Masses of stars in binary systems can be measured. • Mass determines where star lies on main sequence. ...
Peer Instruction/Active Learning
... b) Earth would be pulled into the black hole. c) X-‐rays would destroy Earth. d) Earth would be torn apart from the
... b) Earth would be pulled into the black hole. c) X-‐rays would destroy Earth. d) Earth would be torn apart from the
General Introduction 1. Luminosity, Flux and Magnitude The
... The evolution of the Sun is shown schematically in Fig. 7.3. The red giant phase occurs after the interior of the Sun is exhausted of hydrogen and helium burning initiates. The Sun is not massive enough to burn elements beyond He, so after shedding roughly half its mass in a violent wind leading to ...
... The evolution of the Sun is shown schematically in Fig. 7.3. The red giant phase occurs after the interior of the Sun is exhausted of hydrogen and helium burning initiates. The Sun is not massive enough to burn elements beyond He, so after shedding roughly half its mass in a violent wind leading to ...
Mountain-Skies-2016-0718
... quickly sinking into the west and will be lost to us by early September. The red planet Mars is well up in the south these evenings. It is quickly dimming as the earth moves away from it but still outshines any of the stars in the sky. The observ ...
... quickly sinking into the west and will be lost to us by early September. The red planet Mars is well up in the south these evenings. It is quickly dimming as the earth moves away from it but still outshines any of the stars in the sky. The observ ...
Types of Galaxies - Spring Branch ISD
... 1. Circle the letter of each sentence that is true about electromagnetic waves. a. Different electromagnetic waves have different frequencies. b. All electromagnetic waves have the same wavelength. c. Different electromagnetic waves have different wavelengths. d. All electromagnetic waves travel at ...
... 1. Circle the letter of each sentence that is true about electromagnetic waves. a. Different electromagnetic waves have different frequencies. b. All electromagnetic waves have the same wavelength. c. Different electromagnetic waves have different wavelengths. d. All electromagnetic waves travel at ...
Astronomy Study Guide
... 1. Circle the letter of each sentence that is true about electromagnetic waves. a. Different electromagnetic waves have different frequencies. b. All electromagnetic waves have the same wavelength. c. Different electromagnetic waves have different wavelengths. d. All electromagnetic waves travel at ...
... 1. Circle the letter of each sentence that is true about electromagnetic waves. a. Different electromagnetic waves have different frequencies. b. All electromagnetic waves have the same wavelength. c. Different electromagnetic waves have different wavelengths. d. All electromagnetic waves travel at ...
Stellar Evolution - Hays High Indians
... “This next image is one of the most spectacular views of 1987A yet acquired by the HST. The single large bright light is a star beyond the supernova environs. Around the central supernova is a single ring but associated with the expansion of expelled gases are also a pair of rings further away that ...
... “This next image is one of the most spectacular views of 1987A yet acquired by the HST. The single large bright light is a star beyond the supernova environs. Around the central supernova is a single ring but associated with the expansion of expelled gases are also a pair of rings further away that ...
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.