Slide 1
... - similarly planets of other stars are not visible to us, but must exist [detected by wobbles of star due to gravity of orbiting planets]. ...
... - similarly planets of other stars are not visible to us, but must exist [detected by wobbles of star due to gravity of orbiting planets]. ...
Astronomy 15 - Problem Set Number 7
... Thus the sun’s Schwarzschild radius would be about 3 km, while a 10-solar mass object has about a 30 km Schwarzschild radius. If you compress an object of mass M to a radius smaller than this, it will be a black hole; nothing can escape from in (in the classical, non-quantum theory). Let’s see what ...
... Thus the sun’s Schwarzschild radius would be about 3 km, while a 10-solar mass object has about a 30 km Schwarzschild radius. If you compress an object of mass M to a radius smaller than this, it will be a black hole; nothing can escape from in (in the classical, non-quantum theory). Let’s see what ...
dark - The Institute of Mathematical Sciences
... When the Universe was young, it was nearly smooth and featureless. As it grew older and developed, it became organised. We know that our solar system is organized into planets (including the Earth) orbiting around the Sun. On a scale much larger than the solar system (about 100 million times larger) ...
... When the Universe was young, it was nearly smooth and featureless. As it grew older and developed, it became organised. We know that our solar system is organized into planets (including the Earth) orbiting around the Sun. On a scale much larger than the solar system (about 100 million times larger) ...
Unit 8 Chapter 30 Stars, Galaxies and the Universe
... becomes a Nova (new star) and can burn for a while longer. Super Nova: The center core of huge stars is mainly made up of heavy metals (U, Pb, Fe, Ni). When all of the fuel is used up the collapse of these metals is very rapid. The star can not contain all the material, it just EXPLODES. The death t ...
... becomes a Nova (new star) and can burn for a while longer. Super Nova: The center core of huge stars is mainly made up of heavy metals (U, Pb, Fe, Ni). When all of the fuel is used up the collapse of these metals is very rapid. The star can not contain all the material, it just EXPLODES. The death t ...
Geochemistry & Lab
... mass disparity can be as large as 15 times or more when comparing an L to a Y dwarf, despite the fact that both objects have the same radius. Caption and image ...
... mass disparity can be as large as 15 times or more when comparing an L to a Y dwarf, despite the fact that both objects have the same radius. Caption and image ...
AAS Poster, NM 2002: "The Discovery of New
... differences between the continuum and emission-line filters. We used the photometric errors to judge if a magnitude difference was significant or not. Multiple detections were also considered a plus in constructing our final candidate list. All spectroscopically confirmed Wolf-Rayet stars were found ...
... differences between the continuum and emission-line filters. We used the photometric errors to judge if a magnitude difference was significant or not. Multiple detections were also considered a plus in constructing our final candidate list. All spectroscopically confirmed Wolf-Rayet stars were found ...
light year
... • Lightning is so hot that it causes the air around it to rapidly expand and move faster. – All those air molecules hitting one another causes ...
... • Lightning is so hot that it causes the air around it to rapidly expand and move faster. – All those air molecules hitting one another causes ...
Lecture 15 - Deaths of Stars, Supernovae
... • Imagine we have a cluster of stars that were all formed at the same time, but have a variety of different masses • Using what we know about stellar evolution is there a way to determine the age of the star cluster? ...
... • Imagine we have a cluster of stars that were all formed at the same time, but have a variety of different masses • Using what we know about stellar evolution is there a way to determine the age of the star cluster? ...
History Of Astronomy
... List the planets in order of their distance from the sun. The planets in order of their distance from the sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. [Pluto is now a dwarf planet, FYI.] ...
... List the planets in order of their distance from the sun. The planets in order of their distance from the sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. [Pluto is now a dwarf planet, FYI.] ...
ASTRONOMY - Frost Middle School
... • After the big bang, gravitational attraction caused the matter distributed throughout the universe to form galaxies • The mutual attraction between galaxies caused galaxies to cluster • Even though the distances between galaxy clusters are very large, gravity still acts between them • Because grav ...
... • After the big bang, gravitational attraction caused the matter distributed throughout the universe to form galaxies • The mutual attraction between galaxies caused galaxies to cluster • Even though the distances between galaxy clusters are very large, gravity still acts between them • Because grav ...
Sample Exam for 3 rd Astro Exam
... A. In the galactic halo. B. In the galactic nuclear bulge C. Beyond the Sun above and below the galactic mid-plane D. Perpendicular to the galactic plane. E. In the galactic mid-plane 16. True or false: The Sun is located within the galactic gas layer of the Milky Way A. True B. False C. I have no @ ...
... A. In the galactic halo. B. In the galactic nuclear bulge C. Beyond the Sun above and below the galactic mid-plane D. Perpendicular to the galactic plane. E. In the galactic mid-plane 16. True or false: The Sun is located within the galactic gas layer of the Milky Way A. True B. False C. I have no @ ...
The Milky Way By
... The Milky Way galaxy • Milky Way Galaxy, commonly referred to as just the Milky Way, or sometimes simply as the Galaxy, is the galaxy in which our Solar System is located. The Milky Way is a barred spiral galaxy that is part of the Local Group of galaxies. Padurariu Cristian & Danciu Serban ...
... The Milky Way galaxy • Milky Way Galaxy, commonly referred to as just the Milky Way, or sometimes simply as the Galaxy, is the galaxy in which our Solar System is located. The Milky Way is a barred spiral galaxy that is part of the Local Group of galaxies. Padurariu Cristian & Danciu Serban ...
Chapter 31 Galaxies & the Universe
... the motion of member galaxies, the mass of galaxy clusters can be determined. This mass of whole galaxy clusters is always much larger than the sum of only the visible masses of the galaxies. ...
... the motion of member galaxies, the mass of galaxy clusters can be determined. This mass of whole galaxy clusters is always much larger than the sum of only the visible masses of the galaxies. ...
Ch13_Lecture - Chemistry at Winthrop University
... telescope.) – Or if L is known in advance, a star’s distance can be found ...
... telescope.) – Or if L is known in advance, a star’s distance can be found ...
Ch 3 PPT - Blountstown Middle School
... The universe is made up of stars, gas, and dust, as well as invisible dark matter. Material in the universe is pulled by gravity into galaxies, including our own Milky Way galaxy. ...
... The universe is made up of stars, gas, and dust, as well as invisible dark matter. Material in the universe is pulled by gravity into galaxies, including our own Milky Way galaxy. ...
Lecture 2
... – 8 minutes to reach us from the Sun – 8 years to reach us from the star Sirius (8 light-years away) – 1,500 years to reach us from the Orion Nebula • Thus we see the sun as it was 8 minutes ago, Sirius as it was 8 years ago, & Orion as it was 1500 years ago • The farther out we look into the U ...
... – 8 minutes to reach us from the Sun – 8 years to reach us from the star Sirius (8 light-years away) – 1,500 years to reach us from the Orion Nebula • Thus we see the sun as it was 8 minutes ago, Sirius as it was 8 years ago, & Orion as it was 1500 years ago • The farther out we look into the U ...
Small galaxies are growing smaller
... have the spectacular appearance we see in “coffee table” books. Indeed, in the early days of extragalactic astronomy it was thought that most galaxies were of rather similar (large) luminosities. Specifically, Edwin Hubble (1936) and his contemporaries believed that the luminosity function (LF) of g ...
... have the spectacular appearance we see in “coffee table” books. Indeed, in the early days of extragalactic astronomy it was thought that most galaxies were of rather similar (large) luminosities. Specifically, Edwin Hubble (1936) and his contemporaries believed that the luminosity function (LF) of g ...
astrocoursespring2012lec2-6
... the main sequence. They burn up their nuclear fuel in only millions or tens of millions of years. Stars with lower masses comprise the yellow, orange, and red dwarfs on the lower-right part of the main sequence, where they remain for billions of years. As a star begins to exhaust the hydrogen fuel i ...
... the main sequence. They burn up their nuclear fuel in only millions or tens of millions of years. Stars with lower masses comprise the yellow, orange, and red dwarfs on the lower-right part of the main sequence, where they remain for billions of years. As a star begins to exhaust the hydrogen fuel i ...
CHAPTER XI
... The best educated persons sometimes find it difficult to admit that these distances of Sun and Moon are better determined and more precise than those of certain points on our minute planet. Hence, it is of particular moment for us to give an exact account of the means employed in determining them. T ...
... The best educated persons sometimes find it difficult to admit that these distances of Sun and Moon are better determined and more precise than those of certain points on our minute planet. Hence, it is of particular moment for us to give an exact account of the means employed in determining them. T ...
light year - Otterbein University
... at most off by half a division, or 0.5 mm – Cite a measurement of 15 mm as 15 0.5 mm to indicate that the real value of the length is likely to be anywhere between 14.5 mm and 15.5 mm – If a theory predicts a value of 15. 2 mm, then a reading of 15 0.5 mm is in agreement with the theory but a re ...
... at most off by half a division, or 0.5 mm – Cite a measurement of 15 mm as 15 0.5 mm to indicate that the real value of the length is likely to be anywhere between 14.5 mm and 15.5 mm – If a theory predicts a value of 15. 2 mm, then a reading of 15 0.5 mm is in agreement with the theory but a re ...
News Release - האוניברסיטה העברית
... central disk, followed by mergers between disks. The assumption is that the stars formed slowly within the gaseous disks, and that the disks converted into globes when they merged. In such a merger, the colliding gas clouds produce a big burst of new stars at a rate of hundreds of solar masses per y ...
... central disk, followed by mergers between disks. The assumption is that the stars formed slowly within the gaseous disks, and that the disks converted into globes when they merged. In such a merger, the colliding gas clouds produce a big burst of new stars at a rate of hundreds of solar masses per y ...
Supplemental Educational Support Materials
... A scientist who studies the universe and the celestial bodies residing in it, including their composition, history, location, and motion. Many of the scientists at the Space Telescope Science Institute are astronomers. Astronomers from all over the world use the Hubble Space Telescope. ...
... A scientist who studies the universe and the celestial bodies residing in it, including their composition, history, location, and motion. Many of the scientists at the Space Telescope Science Institute are astronomers. Astronomers from all over the world use the Hubble Space Telescope. ...
1/20/09 301 Physics Chapter 12 The Family of Stars Triangulation
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
Reading Selections for ID1113, p
... 2. Complete the following summary of the text using the words form the chart below. Working in Mount Wilson, Humason and Hubble found that distant galaxies are red-shifted and interpreted this in terms of the Doppler Effect: galaxies are receding from us; the more distant galaxies are receding faste ...
... 2. Complete the following summary of the text using the words form the chart below. Working in Mount Wilson, Humason and Hubble found that distant galaxies are red-shifted and interpreted this in terms of the Doppler Effect: galaxies are receding from us; the more distant galaxies are receding faste ...
My Presentation
... Deep inside, a gas called hydrogen is changed into gas called helium. As it changes, it gives off energy. The star then gets very hot and gives off light. Stars have different temperatures and sizes. As a result, some stars are brighter than others, and they have different colors. Some stars look ye ...
... Deep inside, a gas called hydrogen is changed into gas called helium. As it changes, it gives off energy. The star then gets very hot and gives off light. Stars have different temperatures and sizes. As a result, some stars are brighter than others, and they have different colors. Some stars look ye ...
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are ""close enough"" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances and methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung.