THE CELESTIAL SPHERE
... imagine the stars to remain fixed on a sphere of very large radius with the earth at its centre. We call this sphere the celestial sphere. At any point of time we can only see the upper half of the celestial sphere. The point on this dome right above our head is known as zenith. The lower boundary o ...
... imagine the stars to remain fixed on a sphere of very large radius with the earth at its centre. We call this sphere the celestial sphere. At any point of time we can only see the upper half of the celestial sphere. The point on this dome right above our head is known as zenith. The lower boundary o ...
Outside the Solar System Outside the Solar System OUTSIDE THE
... has strong gravity. It pulls in all surrounding matter and energy. It is called a black hole because even light cannot escape it. ...
... has strong gravity. It pulls in all surrounding matter and energy. It is called a black hole because even light cannot escape it. ...
Image Credit: NASA,ESA, HEIC, Hubble
... • Initial mass determines how quickly fuel will burn (The luminosity) to maintain equilibrium – L~M3.5 More massive stars, even with more fuel to start should burn quicker ...
... • Initial mass determines how quickly fuel will burn (The luminosity) to maintain equilibrium – L~M3.5 More massive stars, even with more fuel to start should burn quicker ...
1 Ay 124 Winter 2016 – HOMEWORK #3
... Problem 1 The nearest spiral galaxy to the Milky Way, M31, has a very concentrated nucleus. At a projected radius of 1 arcsec, stars in the nucleus have a line of sight velocity dispersion of 150 km s−1 , and are also rotating about the nucleus at 150 km s−1 . The total luminosity from within 1 arc ...
... Problem 1 The nearest spiral galaxy to the Milky Way, M31, has a very concentrated nucleus. At a projected radius of 1 arcsec, stars in the nucleus have a line of sight velocity dispersion of 150 km s−1 , and are also rotating about the nucleus at 150 km s−1 . The total luminosity from within 1 arc ...
Star Track 2 - The Search for a Supermassive Black... Early radio astronomers detected an immensely
... The object has a mass about 3 million times the mass of the Sun. (This is not too far off from the figure given in lecture of about 4.5 million Solar masses.) 6. The closest approach of SO-2 to SgrA* is only 120 AU, so SgrA* must be smaller than that. Calculate the minimum density of SgrA* (in solar ...
... The object has a mass about 3 million times the mass of the Sun. (This is not too far off from the figure given in lecture of about 4.5 million Solar masses.) 6. The closest approach of SO-2 to SgrA* is only 120 AU, so SgrA* must be smaller than that. Calculate the minimum density of SgrA* (in solar ...
Stars and Their Characteristics
... Constellations are easily recognizable patterns that help people orient themselves using the night sky. There are 88 “official” ...
... Constellations are easily recognizable patterns that help people orient themselves using the night sky. There are 88 “official” ...
Measuring the Stars pages 813-820
... west, because of the revolution of the Earth around the Sun. ...
... west, because of the revolution of the Earth around the Sun. ...
Determining the Sizes & Distances of Stars Using the H
... Stars are born with a wide variety of mass. The most massive stars are 100 times more massive than the Sun while the least massive ones are only 0.08 times the mass of the Sun. Most stars spend about 90% of their lifetimes shining due to nuclear fusion that goes on in their cores, but after awhile t ...
... Stars are born with a wide variety of mass. The most massive stars are 100 times more massive than the Sun while the least massive ones are only 0.08 times the mass of the Sun. Most stars spend about 90% of their lifetimes shining due to nuclear fusion that goes on in their cores, but after awhile t ...
Canis Majoris
... Canis Majoris is the largest star that has so far been discovered. When viewed from earth it’s very tiny, which means it has a very small apparent magnitude. Canis Majoris is so large that you could fit about seven quadrillion earths inside of it. To put this into perspective, if earth were the size ...
... Canis Majoris is the largest star that has so far been discovered. When viewed from earth it’s very tiny, which means it has a very small apparent magnitude. Canis Majoris is so large that you could fit about seven quadrillion earths inside of it. To put this into perspective, if earth were the size ...
Stella Finger Prints
... nebula (plural is nebulae). Nebulae are large areas of gas and dust where stars are born and sometimes die. They are mainly made up of hydrogen, helium, and other gases and dust. These elements are the key ingredients in making stars. All stars are first born of mostly hydrogen, the simplest form of ...
... nebula (plural is nebulae). Nebulae are large areas of gas and dust where stars are born and sometimes die. They are mainly made up of hydrogen, helium, and other gases and dust. These elements are the key ingredients in making stars. All stars are first born of mostly hydrogen, the simplest form of ...
Planets beyond the solar system
... • Outermost known planet has an orbit similar to that of Jupiter, but is 4 times the mass of Jupiter. • Inner 3 planets all lie within the orbit of Mercury – one is about the mass of Jupiter. • Other planet has half the mass of Saturn, orbit a little less than one A.U. ...
... • Outermost known planet has an orbit similar to that of Jupiter, but is 4 times the mass of Jupiter. • Inner 3 planets all lie within the orbit of Mercury – one is about the mass of Jupiter. • Other planet has half the mass of Saturn, orbit a little less than one A.U. ...
Supercomputer simulation provides missing link between turbulence, hypernovae and gamma-ray bursts
... “The breakthrough here is that Philipp’s team starts from a relatively weak magnetic field and shows it building up to be a very strong and large-scale coherent magnetic field of the kind that is usually assumed to be there when people make models of gamma-ray bursts,” Quataert said. Brightest even ...
... “The breakthrough here is that Philipp’s team starts from a relatively weak magnetic field and shows it building up to be a very strong and large-scale coherent magnetic field of the kind that is usually assumed to be there when people make models of gamma-ray bursts,” Quataert said. Brightest even ...
Exam 3 Study Guide
... A quasar is a type of active galactic nucleus (AGN). Blazars are AGN which are oriented such that its radio jet is directed toward our line of sight. The luminosity of an AGN is >1012 LSun. The size of an AGN is about equal or smaller to that of the Solar System. ...
... A quasar is a type of active galactic nucleus (AGN). Blazars are AGN which are oriented such that its radio jet is directed toward our line of sight. The luminosity of an AGN is >1012 LSun. The size of an AGN is about equal or smaller to that of the Solar System. ...
1 Ay 124 Winter 2014 – HOMEWORK #3
... Problem 1 The nearest spiral galaxy to the Milky Way, M31, has a very concentrated nucleus. At a projected radius of 1 arcsec, stars in the nucleus have a line of sight velocity dispersion of 150 km s−1 , and are also rotating about the nucleus at 150 km s−1 . The total luminosity from within 1 arc ...
... Problem 1 The nearest spiral galaxy to the Milky Way, M31, has a very concentrated nucleus. At a projected radius of 1 arcsec, stars in the nucleus have a line of sight velocity dispersion of 150 km s−1 , and are also rotating about the nucleus at 150 km s−1 . The total luminosity from within 1 arc ...
Name: Period: ___ Date: ______ Light-year Calculation
... Now that you know how many kilometers are in a light-year, determine the distance of these objects. Speed of light = 300,000 km / sec 1 LY = 63,240 AU 1 AU = 1.496 x 108 km 1 LY = 9.46 x 1012 km 1. The closest star to Earth other than the sun is 4.3 light-years away. How many km is that? How many AU ...
... Now that you know how many kilometers are in a light-year, determine the distance of these objects. Speed of light = 300,000 km / sec 1 LY = 63,240 AU 1 AU = 1.496 x 108 km 1 LY = 9.46 x 1012 km 1. The closest star to Earth other than the sun is 4.3 light-years away. How many km is that? How many AU ...
stars & galaxies
... light years thick. • Our sun is located 30,000 light years from the nucleus. • It takes the sun 200 million years to make one rotation around the center. ...
... light years thick. • Our sun is located 30,000 light years from the nucleus. • It takes the sun 200 million years to make one rotation around the center. ...
Stellarium Night Sky Search Key Commands Constellations buttons
... arrows will easily move your view in different directions.] ...
... arrows will easily move your view in different directions.] ...
Lecture (Powerpoint)
... the mass of the Sun, or ~80 Jupiter masses) never ``turn on'' Central temperatures never get hot enough for nuclear burning to begin in earnest Nuclear burning is what powers the star through its life Star sits around as a brown dwarf – too big and hot to be a planet, too small and cold to be a real ...
... the mass of the Sun, or ~80 Jupiter masses) never ``turn on'' Central temperatures never get hot enough for nuclear burning to begin in earnest Nuclear burning is what powers the star through its life Star sits around as a brown dwarf – too big and hot to be a planet, too small and cold to be a real ...
observing cards - NC Science Festival
... was given to this class of object because they appear small & round and possibly planet-like through primitive telescopes. It was very quickly recognized that these were not planets, but the name stuck. The planetary nebula phase of a star’s life represents a short but important time in the life of ...
... was given to this class of object because they appear small & round and possibly planet-like through primitive telescopes. It was very quickly recognized that these were not planets, but the name stuck. The planetary nebula phase of a star’s life represents a short but important time in the life of ...
Beyond Our Solar System
... the moon, and the moon’s orbit all lie in the small red box at lower left. – Now, however, you can see the sun and two other planets that are part of our solar system. – Our solar system consists of the sun, its family of planets, and some smaller bodies such as moons and comets. ...
... the moon, and the moon’s orbit all lie in the small red box at lower left. – Now, however, you can see the sun and two other planets that are part of our solar system. – Our solar system consists of the sun, its family of planets, and some smaller bodies such as moons and comets. ...
Transcript - Chandra X
... Telescope (VLT) at the Paranal Observatory in Chile. The second image is an artist illustration. Slide 12: This Hubble image shows Henize 3-1357 (Hen 3-1357), which is also known as the Stingray Nebula. The Stingray is the youngest known planetary nebula. The bright central stellar core will evolve ...
... Telescope (VLT) at the Paranal Observatory in Chile. The second image is an artist illustration. Slide 12: This Hubble image shows Henize 3-1357 (Hen 3-1357), which is also known as the Stingray Nebula. The Stingray is the youngest known planetary nebula. The bright central stellar core will evolve ...
astrocoursespring2012lec4
... The most massive main-sequence stars will also have the highest absolute magnitude, and these will be the first to evolve into the giant star stage. As the cluster ages, stars of successively lower masses will also enter the giant star stage. Thus the age of a single population cluster can be measur ...
... The most massive main-sequence stars will also have the highest absolute magnitude, and these will be the first to evolve into the giant star stage. As the cluster ages, stars of successively lower masses will also enter the giant star stage. Thus the age of a single population cluster can be measur ...
Cygnus (constellation)
Cygnus /ˈsɪɡnəs/ is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. The swan is one of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.Cygnus contains Deneb, one of the brightest stars in the night sky and one corner of the Summer Triangle, as well as some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen massive companion that was the first object widely held to be a black hole. Many star systems in Cygnus have known planets as a result of the Kepler Mission observing one patch of the sky, the patch is the area around Cygnus. In addition, most of the eastern part of Cygnus is dominated by the Hercules–Corona Borealis Great Wall, a giant galaxy filament that is the largest known structure in the observable universe; covering most of the northern sky.