Test 1, Feb. 2, 2016 - Brock physics
... 35. Type II supernova occurs (a) in a white dwarf-star binary system when the mass transfer pushes the mass of the white dwarf above the maximum value it can have. (b) when a regular star is swallowed by a black hole. (c) when a large mass stars explodes. (d) in a pulsar-star binary system when the ...
... 35. Type II supernova occurs (a) in a white dwarf-star binary system when the mass transfer pushes the mass of the white dwarf above the maximum value it can have. (b) when a regular star is swallowed by a black hole. (c) when a large mass stars explodes. (d) in a pulsar-star binary system when the ...
Chapter 13 The Life of a Star The Life of a Star Mass Is the Key The
... supernova explosion sweeping up interstellar material as it goes is called a supernova remnant – During a 1-100 year time frame, a supernova will expand from 0.03 ly to several light-years in diameter – Supernova remnants have a more ragged look compared to planetary and other nebulae ...
... supernova explosion sweeping up interstellar material as it goes is called a supernova remnant – During a 1-100 year time frame, a supernova will expand from 0.03 ly to several light-years in diameter – Supernova remnants have a more ragged look compared to planetary and other nebulae ...
Chapter 23 The Milky Way Galaxy
... The galactic halo and globular clusters formed very early; the halo is essentially spherical. All the stars in the halo are very old, and there is no gas and dust. The galactic disk is where the youngest stars are, as well as star formation regions— emission nebulae and large clouds of gas and dust ...
... The galactic halo and globular clusters formed very early; the halo is essentially spherical. All the stars in the halo are very old, and there is no gas and dust. The galactic disk is where the youngest stars are, as well as star formation regions— emission nebulae and large clouds of gas and dust ...
Chapter 13
... gases supports it against gravity’s pull • A star generates its supporting pressure from energy produced in its core by the conversion of hydrogen into helium • The hydrogen cannot last forever – consequently, the star must evolve (age) • Once its fuel is exhausted, the star dies – quietly into a wh ...
... gases supports it against gravity’s pull • A star generates its supporting pressure from energy produced in its core by the conversion of hydrogen into helium • The hydrogen cannot last forever – consequently, the star must evolve (age) • Once its fuel is exhausted, the star dies – quietly into a wh ...
W > 1 - The Open University
... NGC1502 (5.7) oc. A fine open cluster. Extending NW of this cluster is a line of 9th and 10th magnitude stars which form "Kemble's Cascade". A beautiful sight in binoculars or a low power wide-field eyepiece on small telescopes. NGC2403 (8.4) sg. Visible in large binoculars. It lies at a distance of ...
... NGC1502 (5.7) oc. A fine open cluster. Extending NW of this cluster is a line of 9th and 10th magnitude stars which form "Kemble's Cascade". A beautiful sight in binoculars or a low power wide-field eyepiece on small telescopes. NGC2403 (8.4) sg. Visible in large binoculars. It lies at a distance of ...
Powerpoint Presentation (large file)
... • Do all galaxies have spiral arms, like the Milky Way? • How do modern astronomers tell how far away galaxies are? • How do the spectra of galaxies tell astronomers that the universe is expanding? • Are galaxies isolated in space, or are they found near other galaxies? • What happens when galaxies ...
... • Do all galaxies have spiral arms, like the Milky Way? • How do modern astronomers tell how far away galaxies are? • How do the spectra of galaxies tell astronomers that the universe is expanding? • Are galaxies isolated in space, or are they found near other galaxies? • What happens when galaxies ...
Stars and Galaxies part 3
... So How Large Are Stars? • Stars vary tremendously in size • The Sun, with a diameter of 1,392,000km, is a medium size star. • Stars from 1/10th to 10 times the size of the Sun are considered mediumsized and this includes most stars. ...
... So How Large Are Stars? • Stars vary tremendously in size • The Sun, with a diameter of 1,392,000km, is a medium size star. • Stars from 1/10th to 10 times the size of the Sun are considered mediumsized and this includes most stars. ...
Document
... • Do all galaxies have spiral arms, like the Milky Way? • How do modern astronomers tell how far away galaxies are? • How do the spectra of galaxies tell astronomers that the universe is expanding? • Are galaxies isolated in space, or are they found near other galaxies? • What happens when galaxies ...
... • Do all galaxies have spiral arms, like the Milky Way? • How do modern astronomers tell how far away galaxies are? • How do the spectra of galaxies tell astronomers that the universe is expanding? • Are galaxies isolated in space, or are they found near other galaxies? • What happens when galaxies ...
Galaxies Chapter Twenty
... • Do all galaxies have spiral arms, like the Milky Way? • How do modern astronomers tell how far away galaxies are? • How do the spectra of galaxies tell astronomers that the universe is expanding? • Are galaxies isolated in space, or are they found near other galaxies? • What happens when galaxies ...
... • Do all galaxies have spiral arms, like the Milky Way? • How do modern astronomers tell how far away galaxies are? • How do the spectra of galaxies tell astronomers that the universe is expanding? • Are galaxies isolated in space, or are they found near other galaxies? • What happens when galaxies ...
The Solar System and its Place in the Galaxy
... radius, which appears to have originated from multiple supernovae explosions in the Scorpius-Centaurus OB association. The Sco-Cen association is a nearby star-forming region that contains many young, high-mass 0- and B-type stars. Such stars have relatively short lifetimes and end their lives in ma ...
... radius, which appears to have originated from multiple supernovae explosions in the Scorpius-Centaurus OB association. The Sco-Cen association is a nearby star-forming region that contains many young, high-mass 0- and B-type stars. Such stars have relatively short lifetimes and end their lives in ma ...
Planets and Moons - Fraser Heights Chess Club
... and billions of stars held together by gravity. One galaxy can have hundreds of billions of stars and be as large as 200,000 light years across. • Galaxy is derived from the Greek galaxias meaning "milky", a reference to the Milky Way. • Many galaxies are believed to have black holes at their active ...
... and billions of stars held together by gravity. One galaxy can have hundreds of billions of stars and be as large as 200,000 light years across. • Galaxy is derived from the Greek galaxias meaning "milky", a reference to the Milky Way. • Many galaxies are believed to have black holes at their active ...
Critical Thinking Questions: (work on these with a partner) Post
... A. Why is a protostar not classified as an actual star? & what needs to occur for a star to transform from a Protostar to an actual star? A protostar is not an actual star because fusion doesn't occur. To become an actual star, nuclear fusion needs to occur. B. Why is our sun classified as a “Main S ...
... A. Why is a protostar not classified as an actual star? & what needs to occur for a star to transform from a Protostar to an actual star? A protostar is not an actual star because fusion doesn't occur. To become an actual star, nuclear fusion needs to occur. B. Why is our sun classified as a “Main S ...
Worksheet
... matter very much (doing so through the weak nuclear force). Until very recently, we did not know if it had any mass (without mass, like a photon, it would travel at the speed of light). Because it interacts very little with other matter, it was known that most neutrinos should "fly" out of the Sun, ...
... matter very much (doing so through the weak nuclear force). Until very recently, we did not know if it had any mass (without mass, like a photon, it would travel at the speed of light). Because it interacts very little with other matter, it was known that most neutrinos should "fly" out of the Sun, ...
Universe 8e Lecture Chapter 17 Nature of Stars
... mass less than 3 M, a magnetic field 1012 times stronger than that of the Sun, and a rotation period of roughly 1 second. Pulsars: A pulsar is a source of periodic pulses of radio radiation. These pulses are produced as beams of radio waves from a neutron star’s magnetic poles sweep past the Earth. ...
... mass less than 3 M, a magnetic field 1012 times stronger than that of the Sun, and a rotation period of roughly 1 second. Pulsars: A pulsar is a source of periodic pulses of radio radiation. These pulses are produced as beams of radio waves from a neutron star’s magnetic poles sweep past the Earth. ...
Universe 8e Lecture Chapter 17 Nature of Stars
... mass less than 3 M, a magnetic field 1012 times stronger than that of the Sun, and a rotation period of roughly 1 second. Pulsars: A pulsar is a source of periodic pulses of radio radiation. These pulses are produced as beams of radio waves from a neutron star’s magnetic poles sweep past the Earth. ...
... mass less than 3 M, a magnetic field 1012 times stronger than that of the Sun, and a rotation period of roughly 1 second. Pulsars: A pulsar is a source of periodic pulses of radio radiation. These pulses are produced as beams of radio waves from a neutron star’s magnetic poles sweep past the Earth. ...
Stars, Stellar classification, H
... It would be only 1/3 as bright It would be only 1/6 as bright It would be only 1/9 as bright It would be three times brighter ...
... It would be only 1/3 as bright It would be only 1/6 as bright It would be only 1/9 as bright It would be three times brighter ...
Astronomy 103
... Bavaria developed the spectroscope in the early 1800's. Wollaston was the first to see dark lines in the spectrum of the Sun and by 1863, it was known that these dark lines were identical to patterns of spectral lines from particular elements found on the Earth. (One set of lines failed to match the ...
... Bavaria developed the spectroscope in the early 1800's. Wollaston was the first to see dark lines in the spectrum of the Sun and by 1863, it was known that these dark lines were identical to patterns of spectral lines from particular elements found on the Earth. (One set of lines failed to match the ...
Lecture 18: The Milky Way Galaxy
... get local angular speed (A-B), therefore distance to Galaxy center, rotation period of nearby stars ...
... get local angular speed (A-B), therefore distance to Galaxy center, rotation period of nearby stars ...
Lecture 12
... The light from the Andromeda galaxy left it about 1.5Myr ago, and the light from something in the Virgo Cluster about 65 Myr ago (about when the dinosaurs were killed). We’ll see we think the Universe is ~14Gyr old, so light from an object >14Glyr (5000Mpc) away will not have had enough time to reac ...
... The light from the Andromeda galaxy left it about 1.5Myr ago, and the light from something in the Virgo Cluster about 65 Myr ago (about when the dinosaurs were killed). We’ll see we think the Universe is ~14Gyr old, so light from an object >14Glyr (5000Mpc) away will not have had enough time to reac ...
Surveying the Stars
... The Random Walk towards the Spectral Types… • White Stars, with prominent hydrogen lines. Called them “A stars.” • Blue-white stars, with less prominent H lines, and weak helium lines. Called them “B stars” • Then, no more in this color direction, so skip some letters and… Cream colored stars, with ...
... The Random Walk towards the Spectral Types… • White Stars, with prominent hydrogen lines. Called them “A stars.” • Blue-white stars, with less prominent H lines, and weak helium lines. Called them “B stars” • Then, no more in this color direction, so skip some letters and… Cream colored stars, with ...
Starbursts – from 30 Doradus to Lyman
... the Hubble tuning fork, but now from M82-like starbursts via ultraluminous infrared galaxies to the recently discovered SCUBA galaxies, as well as from Lyman-break galaxies through luminous compact blue galaxies, perhaps down to dwarf ellipticals. It appears that the frequency of starbursts was larg ...
... the Hubble tuning fork, but now from M82-like starbursts via ultraluminous infrared galaxies to the recently discovered SCUBA galaxies, as well as from Lyman-break galaxies through luminous compact blue galaxies, perhaps down to dwarf ellipticals. It appears that the frequency of starbursts was larg ...
1. - TeacherWeb
... • We learn about stars by studying energy. – Stars produce a full range of electromagnetic radiation, from high-energy X-rays to low-energy radio waves. – Scientists use optical telescopes to study visible light and radio telescopes to study radio waves emitted from astronomical objects. – Earth’s a ...
... • We learn about stars by studying energy. – Stars produce a full range of electromagnetic radiation, from high-energy X-rays to low-energy radio waves. – Scientists use optical telescopes to study visible light and radio telescopes to study radio waves emitted from astronomical objects. – Earth’s a ...
Chapter 13
... gases supports it against gravity’s pull • A star generates its supporting pressure from energy produced in its core by the conversion of hydrogen into helium • The hydrogen cannot last forever – consequently, the star must evolve (age) • Once its fuel is exhausted, the star dies – quietly into a wh ...
... gases supports it against gravity’s pull • A star generates its supporting pressure from energy produced in its core by the conversion of hydrogen into helium • The hydrogen cannot last forever – consequently, the star must evolve (age) • Once its fuel is exhausted, the star dies – quietly into a wh ...
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.