20_LectureOutline
... Its path across the H-R diagram is essentially a straight line—it stays at just about the same luminosity as it cools off. Eventually the star dies in a violent explosion called a supernova. ...
... Its path across the H-R diagram is essentially a straight line—it stays at just about the same luminosity as it cools off. Eventually the star dies in a violent explosion called a supernova. ...
Stellar Structure - McMurry University
... The white dwarf can ignite the new matter and flare up as a nova. The white dwarf can accrete too much matter and detonate as a supernova type Ia. Either the white dwarf can ignite the new matter and flare up as a nova, or the white dwarf can accrete too much matter and detonate as a supernova type ...
... The white dwarf can ignite the new matter and flare up as a nova. The white dwarf can accrete too much matter and detonate as a supernova type Ia. Either the white dwarf can ignite the new matter and flare up as a nova, or the white dwarf can accrete too much matter and detonate as a supernova type ...
Stars I
... diameters through a telescope. Stars are so far away that we see them just as points of light. ...
... diameters through a telescope. Stars are so far away that we see them just as points of light. ...
26.Meikle.Supernova_2002hh
... Supernova 2002hh was discovered in the galaxy NGC 6946 in Oct. 2002. It is a type II supernova, which means that it resulted from the collapse of the core of a massive star at the end of its lifetime. The objective of the observations is to understand the nature of the explosion mechanism and the p ...
... Supernova 2002hh was discovered in the galaxy NGC 6946 in Oct. 2002. It is a type II supernova, which means that it resulted from the collapse of the core of a massive star at the end of its lifetime. The objective of the observations is to understand the nature of the explosion mechanism and the p ...
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 ...
AST 301 Introduction to Astronomy - University of Texas Astronomy
... The rate of fusion depends strongly on temperature, because the protons must be moving fast to get close enough together so they can be attracted by the strong force before their electrical repulsion pushes them apart. If the center of a star is too hot, fusion will run faster than energy is being r ...
... The rate of fusion depends strongly on temperature, because the protons must be moving fast to get close enough together so they can be attracted by the strong force before their electrical repulsion pushes them apart. If the center of a star is too hot, fusion will run faster than energy is being r ...
constellations - Otterbein University
... - constellation shapes and names - star names and position in constellation - deep sky objects’ names and position • Quiz: You will be asked to find these objects on a star map. ...
... - constellation shapes and names - star names and position in constellation - deep sky objects’ names and position • Quiz: You will be asked to find these objects on a star map. ...
Galaxy Collisions, Gas Stripping and Star Formation in the Evolution
... An overabundance of spiral galaxies and an under abundance of S0 galaxies in highredshift clusters, when it is compared to low z clusters, is a consequences of galaxy merger events and of other environmental effects. In ΛDCM cosmological models with Ω0 = 0.4 and ΩΛ = 0.6, the galaxy interactions and ...
... An overabundance of spiral galaxies and an under abundance of S0 galaxies in highredshift clusters, when it is compared to low z clusters, is a consequences of galaxy merger events and of other environmental effects. In ΛDCM cosmological models with Ω0 = 0.4 and ΩΛ = 0.6, the galaxy interactions and ...
study guide
... • Jupiter and Saturn are still “collapsing” and releasing heat • All have moons • Some are large, most are captured asteroids ...
... • Jupiter and Saturn are still “collapsing” and releasing heat • All have moons • Some are large, most are captured asteroids ...
Death of Stars • Models of Star behavior can give estimates of how
... • Crab Nebula in 1057 (Chinese observed it) • Tycho’s star in 1527 • Kepler’s star in 1604 • SN1987A in the Large Magellanic Cloud. The neutrino flux from this event was seen before the visible light was observed. The star was known as Sanduleak 69-202, a blue supergiant 25 times more massive than t ...
... • Crab Nebula in 1057 (Chinese observed it) • Tycho’s star in 1527 • Kepler’s star in 1604 • SN1987A in the Large Magellanic Cloud. The neutrino flux from this event was seen before the visible light was observed. The star was known as Sanduleak 69-202, a blue supergiant 25 times more massive than t ...
The Sun - Center for Astrophysics and Space Astronomy
... • How many times more energy is there in an x-ray photon at 100A than the infrared light photons emitted by every living human? (Assuming 10,000nm wavelength of infrared light). • A. Ten times as powerful. • B. A hundred times more powerful. • C. A thousand times more powerful. • D. 1x1012 (a trilli ...
... • How many times more energy is there in an x-ray photon at 100A than the infrared light photons emitted by every living human? (Assuming 10,000nm wavelength of infrared light). • A. Ten times as powerful. • B. A hundred times more powerful. • C. A thousand times more powerful. • D. 1x1012 (a trilli ...
Project 4: The HR diagram. Open clusters
... diagonal strip from high temperature, high luminosity stars to low temperature, low luminosity stars. These are the main sequence stars. Our Sun is one of them. There are a few stars that are not in this diagonal strip. There are some low temperature, high luminosity stars - these are called giants ...
... diagonal strip from high temperature, high luminosity stars to low temperature, low luminosity stars. These are the main sequence stars. Our Sun is one of them. There are a few stars that are not in this diagonal strip. There are some low temperature, high luminosity stars - these are called giants ...
Supernovae March 23 − Supernova 1987A
... • LMC is small galaxy that orbits our own Milky Way Galaxy. ...
... • LMC is small galaxy that orbits our own Milky Way Galaxy. ...
Activity: Multiwavelength Bingo - Chandra X
... The caller continues drawing cards from the container, until a player has 5 marked images in a row (vertically, horizontally or diagonally) and yells “bingo!” If the caller verifies that the player indeed has bingo, that player wins. If not, incorrect tokens are removed and play continues until ...
... The caller continues drawing cards from the container, until a player has 5 marked images in a row (vertically, horizontally or diagonally) and yells “bingo!” If the caller verifies that the player indeed has bingo, that player wins. If not, incorrect tokens are removed and play continues until ...
Hertzsprung-Russell Diagrams
... spectral type, and evolutionary stage. There are 3 very different types of stars: Most stars, including the sun, are "main sequence stars," fueled by nuclear fusion converting hydrogen into helium. For these stars, the hotter they are, the brighter. These stars are in the most stable part of their e ...
... spectral type, and evolutionary stage. There are 3 very different types of stars: Most stars, including the sun, are "main sequence stars," fueled by nuclear fusion converting hydrogen into helium. For these stars, the hotter they are, the brighter. These stars are in the most stable part of their e ...
Double Stars in Scorpio`s Claws
... stars that are a rewarding challenge to any astronomer. Some of these are actual double stars (pairs of stars that orbit about each other), others are ‘apparent doubles’ – stars that simply lie along the same line of sight, but are very distant from each other in space. The map below indicates the l ...
... stars that are a rewarding challenge to any astronomer. Some of these are actual double stars (pairs of stars that orbit about each other), others are ‘apparent doubles’ – stars that simply lie along the same line of sight, but are very distant from each other in space. The map below indicates the l ...
THE LIFE CYCLES OF STARS (3)
... classified stars according to their apparent brightness to the eye, dividing them six into classes of brightness. The brightest stars were called first magnitude, the somewhat dimmer stars were second magnitude, even dimmer were third magnitude, down to sixth magnitude which were the faintest stars ...
... classified stars according to their apparent brightness to the eye, dividing them six into classes of brightness. The brightest stars were called first magnitude, the somewhat dimmer stars were second magnitude, even dimmer were third magnitude, down to sixth magnitude which were the faintest stars ...
Red Giants - Faculty Web Pages
... Most blue stars are Main Sequence stars. But whereas some red stars in the list are simply tiny, cool Main Sequence stars, other red stars of the exact same color are huge Red Giants! Telling the difference between the Main Sequence red stars and the Red Giant stars involves some complex measurement ...
... Most blue stars are Main Sequence stars. But whereas some red stars in the list are simply tiny, cool Main Sequence stars, other red stars of the exact same color are huge Red Giants! Telling the difference between the Main Sequence red stars and the Red Giant stars involves some complex measurement ...
Ch. 17 (RGs & WDs)
... then big blue stars, then smaller blue ones then finally small red dwarfs. This process can last some tens of millions of years. Not long enough! ...
... then big blue stars, then smaller blue ones then finally small red dwarfs. This process can last some tens of millions of years. Not long enough! ...
Micro_lect20a
... origin. As a massive red supergiant, it is nearing the end of its life and will soon become a supernova. In this historic image, a bright hotspot is revealed on the star's surface. ...
... origin. As a massive red supergiant, it is nearing the end of its life and will soon become a supernova. In this historic image, a bright hotspot is revealed on the star's surface. ...
Agenda - Relativity Group
... • State several ways in which high-mass stars differ from low-mass stars. • High-mass stars live much shorter lives than low-mass stars. High-mass stars have convective cores but no other convective layers, while low-mass stars have convection layers that can extend from their surface to large depth ...
... • State several ways in which high-mass stars differ from low-mass stars. • High-mass stars live much shorter lives than low-mass stars. High-mass stars have convective cores but no other convective layers, while low-mass stars have convection layers that can extend from their surface to large depth ...
Sirius Astronomer - Orange County Astronomers
... sun), but were spread about both the day and night sides. The “neck” of the bowling pin shape is much smoother than the rest, probably coated in thick dust. No jets appear in that area. There are no apparent craters anywhere. The life of a comet has to result in multitudes of collisions, so the resu ...
... sun), but were spread about both the day and night sides. The “neck” of the bowling pin shape is much smoother than the rest, probably coated in thick dust. No jets appear in that area. There are no apparent craters anywhere. The life of a comet has to result in multitudes of collisions, so the resu ...
pkt 14 Astrophysics
... Constellations - A group of stars in a recognizable pattern that appear to be near each other in space. Nebula is an interstellar cloud of dust, hydrogen gas and plasma. It is the first stage of a star's cycle but it can also refer to the remains of a dying star (planetary nebula). Originally nebula ...
... Constellations - A group of stars in a recognizable pattern that appear to be near each other in space. Nebula is an interstellar cloud of dust, hydrogen gas and plasma. It is the first stage of a star's cycle but it can also refer to the remains of a dying star (planetary nebula). Originally nebula ...
The Northern sky - Visit Isle of Man
... Andromeda Galaxy (M31) The Andromeda Galaxy, also known as M31 is difficult to spot with the naked eye, but well worth trying trying to see. This tiny smudge of light, between the constellations Cassiopeia and Pegasus is one of the most spectacular sights in Manx Skies, At 2.2 billion light years aw ...
... Andromeda Galaxy (M31) The Andromeda Galaxy, also known as M31 is difficult to spot with the naked eye, but well worth trying trying to see. This tiny smudge of light, between the constellations Cassiopeia and Pegasus is one of the most spectacular sights in Manx Skies, At 2.2 billion light years aw ...
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.