Stellar Explosions
... Supernova explosions are very energetic events. By studying supernovae and their remnants in multiwavelengths, astronomers gain a clearer picture of the death of massive stars and their effect on the gas and dust of the interstellar medium surrounding them. The supernova blasts from massive stars ca ...
... Supernova explosions are very energetic events. By studying supernovae and their remnants in multiwavelengths, astronomers gain a clearer picture of the death of massive stars and their effect on the gas and dust of the interstellar medium surrounding them. The supernova blasts from massive stars ca ...
ReviewQuestionsForClass
... How do size, temperature, and distance to a star affect its brightness? Which stars on the main sequence are the brightest? Hottest? Biggest? Bluest? Live the longest? What are the different astronomical objects? Comets, nebulae, main sequence stars, red giants, white dwarves, planetary nebulae, bin ...
... How do size, temperature, and distance to a star affect its brightness? Which stars on the main sequence are the brightest? Hottest? Biggest? Bluest? Live the longest? What are the different astronomical objects? Comets, nebulae, main sequence stars, red giants, white dwarves, planetary nebulae, bin ...
October 2013
... and is typical of areas where new stars can form. Between the Scorpion and the Centaur are the Altar, the Level and the Wolf, while to the east of the Milky Way stretches a great expanse of sky with relatively few bright stars, dominated by birds and 'water constellations'. In the south these includ ...
... and is typical of areas where new stars can form. Between the Scorpion and the Centaur are the Altar, the Level and the Wolf, while to the east of the Milky Way stretches a great expanse of sky with relatively few bright stars, dominated by birds and 'water constellations'. In the south these includ ...
The H-R Diagram
... spend most of their life on the main sequence, although stars in the upper left have very short lifetimes compared with those in the lower right. Stars on the main sequence are converting Hydrogen (H) to Helium (He) in their cores. Supergiants: The Supergiants have luminosity class Ia and Ib. They f ...
... spend most of their life on the main sequence, although stars in the upper left have very short lifetimes compared with those in the lower right. Stars on the main sequence are converting Hydrogen (H) to Helium (He) in their cores. Supergiants: The Supergiants have luminosity class Ia and Ib. They f ...
GEARS Workshop Monday - Georgia Southern University
... Organizing Stars • Astronomers want nothing more than to classify and categorize – just like every other scientist • First thing we do is try to plot things on graphs to see if there is a pattern • Let’s plot two intrinsic properties against one another. ...
... Organizing Stars • Astronomers want nothing more than to classify and categorize – just like every other scientist • First thing we do is try to plot things on graphs to see if there is a pattern • Let’s plot two intrinsic properties against one another. ...
Final Exam Practice Part I
... 26. When a massive, dying star blows itself apart, if the remaining mass is less than three times the mass of the sun, the leftover material will form a ______. 28. Cosmologists think the material in our bodies was once part of a massive star. Explain how it went from a star to our bodies. 29. Descr ...
... 26. When a massive, dying star blows itself apart, if the remaining mass is less than three times the mass of the sun, the leftover material will form a ______. 28. Cosmologists think the material in our bodies was once part of a massive star. Explain how it went from a star to our bodies. 29. Descr ...
pptx
... In order to fuse hydrogen, the center of a star must be hot enough. If a star’s mass is too low, its core will be too cool to ignite hydrogen fusion. These stars that are too small in mass for hydrogen fusion are called brown dwarfs. After their birth, they become steadily cooler, fainter, and small ...
... In order to fuse hydrogen, the center of a star must be hot enough. If a star’s mass is too low, its core will be too cool to ignite hydrogen fusion. These stars that are too small in mass for hydrogen fusion are called brown dwarfs. After their birth, they become steadily cooler, fainter, and small ...
The Stars - Department of Physics and Astronomy
... 1) P + P D + e+ + neutrino + energy 2) D + P 3He + photon + energy 3) 3He + 3He 4He + 2protons + photon + energy ...
... 1) P + P D + e+ + neutrino + energy 2) D + P 3He + photon + energy 3) 3He + 3He 4He + 2protons + photon + energy ...
Galaxy Properties - Tufts Institute of Cosmology
... Ellipticals: Velocities of stars in ellipticals are more or less random Velocity dispersions are responsible for the overall shape of galaxies. Oblate and Prolate Ellipticals – how that? Spiral: Velocities of stars in spirals are more ordered. Stars rotate around the galactic center in a disk surrou ...
... Ellipticals: Velocities of stars in ellipticals are more or less random Velocity dispersions are responsible for the overall shape of galaxies. Oblate and Prolate Ellipticals – how that? Spiral: Velocities of stars in spirals are more ordered. Stars rotate around the galactic center in a disk surrou ...
The Milky Way The Milky Way`s Neighbourhood
... Hipparchus, an ancient Greek astronomer of the second century B.C.E., is best remembered for his astronomical measurements and the instruments he created to make them. Hipparchus constructed an atlas of the stars visible without a telescope and categorized them by brightness. The first major astrome ...
... Hipparchus, an ancient Greek astronomer of the second century B.C.E., is best remembered for his astronomical measurements and the instruments he created to make them. Hipparchus constructed an atlas of the stars visible without a telescope and categorized them by brightness. The first major astrome ...
Stellar Evolution - Harnett County High Schools Wiki
... When all the hydrogen in a star’s core is gone, star has a helium center and the outer layers have mostly hydrogen gas Some hydrogen will continue to undergo reactions in the outermost layer of the helium core; energy produced in this layer forces out layers of the star to expand and cool The star h ...
... When all the hydrogen in a star’s core is gone, star has a helium center and the outer layers have mostly hydrogen gas Some hydrogen will continue to undergo reactions in the outermost layer of the helium core; energy produced in this layer forces out layers of the star to expand and cool The star h ...
Chapter 27.1
... Describe the ways distances from the earth to the stars are measured. Explain the difference between absolute and apparent magnitude. ...
... Describe the ways distances from the earth to the stars are measured. Explain the difference between absolute and apparent magnitude. ...
Weathering, Erosion and Mass Movement
... bombarded with particles and radiation after violent eruptions from the Sun’s surface called solar flares. ...
... bombarded with particles and radiation after violent eruptions from the Sun’s surface called solar flares. ...
Review Questions for Chp 2
... 15. Our sun is what type of star and where will it go in the next stage of its life? 16. What is responsible for forming new stars or where do new stars come from? 17. Supernova stars have one of two fates? What are the two fates of supernova stars? 18. How can scientists observe a black hole if no ...
... 15. Our sun is what type of star and where will it go in the next stage of its life? 16. What is responsible for forming new stars or where do new stars come from? 17. Supernova stars have one of two fates? What are the two fates of supernova stars? 18. How can scientists observe a black hole if no ...
Slide 1
... of the Virgo Cluster (a 'rich' cluster) and about 100 other clusters including Local Grp. We are falling toward Virgo ...
... of the Virgo Cluster (a 'rich' cluster) and about 100 other clusters including Local Grp. We are falling toward Virgo ...
Figures I through VII in Section 1 on the following sheet
... Figures I through VII on the following sheet are spectra of some Type V stars. List them in order of decreasing temperature (_1_). List them in order of decreasing strength of their Hydrogen lines (_2_). Which spectrum would most likely have been produced by star B from figure X (_3_)? Of stars C an ...
... Figures I through VII on the following sheet are spectra of some Type V stars. List them in order of decreasing temperature (_1_). List them in order of decreasing strength of their Hydrogen lines (_2_). Which spectrum would most likely have been produced by star B from figure X (_3_)? Of stars C an ...
The Hertzsprung – Russell Diagram
... The Hertzsprung – Russell Diagram Background Information: For astronomers, a graph that displays a star’s luminosity on the y-axis and its surface temperature on the x-axis sets up an extremely useful diagram called a Hertzsprung-Russell, or H-R Diagram. In 1910 Ejnar Hertzsprung and Henry Norris Ru ...
... The Hertzsprung – Russell Diagram Background Information: For astronomers, a graph that displays a star’s luminosity on the y-axis and its surface temperature on the x-axis sets up an extremely useful diagram called a Hertzsprung-Russell, or H-R Diagram. In 1910 Ejnar Hertzsprung and Henry Norris Ru ...
Lecture - Ann Arbor Earth Science
... Our Universe In 1995, the Hubble Space Telescope pointed at a blank area of the sky near Ursa Major for 10 days. It produced this picture. Almost all the objects in this photograph are galaxies that are located between 5 and 10 billion light years away from Earth. Younger galaxies are blue while ol ...
... Our Universe In 1995, the Hubble Space Telescope pointed at a blank area of the sky near Ursa Major for 10 days. It produced this picture. Almost all the objects in this photograph are galaxies that are located between 5 and 10 billion light years away from Earth. Younger galaxies are blue while ol ...
Name
... explosion form what is now called the _____________________ ________________. 30. In 1987 a supernova called ____________________________ was discovered. 31. When the largest of stars explode (supernova) the dense core that is left becomes not a pulsar, but a _____________ ______________. 32. The fi ...
... explosion form what is now called the _____________________ ________________. 30. In 1987 a supernova called ____________________________ was discovered. 31. When the largest of stars explode (supernova) the dense core that is left becomes not a pulsar, but a _____________ ______________. 32. The fi ...
Document
... • All Type 1a supernova have similar peak luminosities, and so can be used to measure the distance to the clusters or galaxies that contain them. ...
... • All Type 1a supernova have similar peak luminosities, and so can be used to measure the distance to the clusters or galaxies that contain them. ...
1201 Discussion Notes
... Remember, the orbits in an elliptical galaxy are fairly random, so even if we focus on one area there will be a range of Doppler shifted lines from the stars that are moving towards and away from us at different speeds. These all combine (they sort of add together) to make a broadened line. The broa ...
... Remember, the orbits in an elliptical galaxy are fairly random, so even if we focus on one area there will be a range of Doppler shifted lines from the stars that are moving towards and away from us at different speeds. These all combine (they sort of add together) to make a broadened line. The broa ...
Characteristics of Stars Stars Analyzing Starlight Star Characteristics
... · each star produces a unique spectrum (series of colors and lines) · a star's spectrum tells us elements present (composition) surface temperature how fast the star is moving toward or away from Earth ...
... · each star produces a unique spectrum (series of colors and lines) · a star's spectrum tells us elements present (composition) surface temperature how fast the star is moving toward or away from Earth ...
Document
... determining the distance of stars. The change in position of an object with respect to a distant background is called parallax. As Earth moves in its orbit, astronomers are able to observe stars from two different positions. Astronomers measure the parallax of nearby stars to determine their distanc ...
... determining the distance of stars. The change in position of an object with respect to a distant background is called parallax. As Earth moves in its orbit, astronomers are able to observe stars from two different positions. Astronomers measure the parallax of nearby stars to determine their distanc ...
H II region
An H II region is a large, low-density cloud of partially ionized gas in which star formation has recently taken place. The short-lived blue stars forged in these regions emit copious amounts of ultraviolet light that ionize the surrounding gas. H II regions—sometimes several hundred light-years across—are often associated with giant molecular clouds. The first known H II region was the Orion Nebula, which was discovered in 1610 by Nicolas-Claude Fabri de Peiresc.H II regions are named for the large amount of ionised atomic hydrogen they contain, referred to as H II, pronounced H-two by astronomers (an H I region being neutral atomic hydrogen, and H2 being molecular hydrogen). Such regions have extremely diverse shapes, because the distribution of the stars and gas inside them is irregular. They often appear clumpy and filamentary, sometimes showing bizarre shapes such as the Horsehead Nebula. H II regions may give birth to thousands of stars over a period of several million years. In the end, supernova explosions and strong stellar winds from the most massive stars in the resulting star cluster will disperse the gases of the H II region, leaving behind a cluster of birthed stars such as the Pleiades.H II regions can be seen to considerable distances in the universe, and the study of extragalactic H II regions is important in determining the distance and chemical composition of other galaxies. Spiral and irregular galaxies contain many H II regions, while elliptical galaxies are almost devoid of them. In the spiral galaxies, including the Milky Way, H II regions are concentrated in the spiral arms, while in the irregular galaxies they are distributed chaotically. Some galaxies contain huge H II regions, which may contain tens of thousands of stars. Examples include the 30 Doradus region in the Large Magellanic Cloud and NGC 604 in the Triangulum Galaxy.