bright - TutorPlus
... depending on their position on the H-R diagram. • Most stars line up along a slightly curved diagonal line called the main sequence. Our Sun is located on the main sequence. • On the main sequence, low mass stars tend to be cooler and less bright whereas high mass stars are hotter, brighter and loca ...
... depending on their position on the H-R diagram. • Most stars line up along a slightly curved diagonal line called the main sequence. Our Sun is located on the main sequence. • On the main sequence, low mass stars tend to be cooler and less bright whereas high mass stars are hotter, brighter and loca ...
Formation of Stars - mcp
... 3. Our sun is used to determine masses of stars ◦ 1.0 solar mass = mass of our sun ◦ If a stellar object is less than .01 solar mass it will not turn into a star ...
... 3. Our sun is used to determine masses of stars ◦ 1.0 solar mass = mass of our sun ◦ If a stellar object is less than .01 solar mass it will not turn into a star ...
Observing the Solar System
... • According to the new definition, a full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity. In addition, a planet has to dominate the neighborhood around its orbit. • Pluto has been demoted because it does not dominate its n ...
... • According to the new definition, a full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity. In addition, a planet has to dominate the neighborhood around its orbit. • Pluto has been demoted because it does not dominate its n ...
The Central Star of A63 – UU Sge Don Pollacco, Ralf
... UU Sge is unique amongst central star in that it is a totally eclipsing binary. Hence physical parameters for the components can be derived, in principle, with great accuracy. The morphology of A63 is extreme, exhibiting an aspect ratio of some 7:1! ...
... UU Sge is unique amongst central star in that it is a totally eclipsing binary. Hence physical parameters for the components can be derived, in principle, with great accuracy. The morphology of A63 is extreme, exhibiting an aspect ratio of some 7:1! ...
CST Prep- 8th Grade Astronomy
... 1. The theory of how the universe was created is called the ____________________. 2. Which equation states that matter and energy are interchangeable? __________________ 3. All matter in the Universe today came from an original pin prick of limitless __________________. 4. Is the universe contractin ...
... 1. The theory of how the universe was created is called the ____________________. 2. Which equation states that matter and energy are interchangeable? __________________ 3. All matter in the Universe today came from an original pin prick of limitless __________________. 4. Is the universe contractin ...
The Milky Way * A Classic Galaxy
... • Pop I,II show MW formed spheroid first, then disk more gradually. • Hubble discovered Cepheids in Andromeda Nebula, so it’s a Galaxy, and we must be one too • Star formation happening in disk right through today • 10 million solar mass Giant black hole in nucleus of our Galaxy, evidence by rapid o ...
... • Pop I,II show MW formed spheroid first, then disk more gradually. • Hubble discovered Cepheids in Andromeda Nebula, so it’s a Galaxy, and we must be one too • Star formation happening in disk right through today • 10 million solar mass Giant black hole in nucleus of our Galaxy, evidence by rapid o ...
Lecture 9: Post-main sequence evolution of stars Lifespan on the
... • The death of low mass stars - planetary nebulae and white dwarfs • Summary - the evolution of our Sun ...
... • The death of low mass stars - planetary nebulae and white dwarfs • Summary - the evolution of our Sun ...
The Life Cycle of a Star
... to gravity, the protostar has reached equilibrium and is therefore reached a reasonably stable size. ...
... to gravity, the protostar has reached equilibrium and is therefore reached a reasonably stable size. ...
The Temperatures of Stars
... the Harvard “computers” to record the spectra of nearly 1 million stars and classify each. A spectrum is the range of colors emitted by an object that contains information on the object’s temperature, chemical composition, or motion. The Draper Catalog provided a wealth of data that would reveal muc ...
... the Harvard “computers” to record the spectra of nearly 1 million stars and classify each. A spectrum is the range of colors emitted by an object that contains information on the object’s temperature, chemical composition, or motion. The Draper Catalog provided a wealth of data that would reveal muc ...
Lives of Stars - Madison County Schools
... outshine the entire galaxy (300,000,000,000 stars) it was in. Supernovae can be seen from Earth. There are historic records of some stars that were so bright that they could be seen during the day for weeks at a time. ...
... outshine the entire galaxy (300,000,000,000 stars) it was in. Supernovae can be seen from Earth. There are historic records of some stars that were so bright that they could be seen during the day for weeks at a time. ...
AJAstroProject
... M42 – The Orion Nebula • The Orion Nebula is an example of an emission nebula. • It is about 1,270 ly away but many source vary on the exact distance. • It has an apparent magnitude of 3.0. • This is only a 5 second exposure through the V filter. ...
... M42 – The Orion Nebula • The Orion Nebula is an example of an emission nebula. • It is about 1,270 ly away but many source vary on the exact distance. • It has an apparent magnitude of 3.0. • This is only a 5 second exposure through the V filter. ...
Measuring Stars
... Globular cluster 47 Tucana, MS turnoff has reached Sun like stars well developed radiant and white dwarf branches. So it has to be more than 10 billion years old. ...
... Globular cluster 47 Tucana, MS turnoff has reached Sun like stars well developed radiant and white dwarf branches. So it has to be more than 10 billion years old. ...
Sample Answer Sheet for The 10 Tourist Wonders of the
... Justification: For their last trip before returning home, our couple wants to visit a galaxy, and this one is their favorite. It is a barred spiral shape, which resembles the Milky Way Galaxy in which we live (although the bar in NGC1300 is longer and more distinct than ours probably is.) This galax ...
... Justification: For their last trip before returning home, our couple wants to visit a galaxy, and this one is their favorite. It is a barred spiral shape, which resembles the Milky Way Galaxy in which we live (although the bar in NGC1300 is longer and more distinct than ours probably is.) This galax ...
The HR Diagram - Faculty Web Pages
... brightnesses. Now let's see if we can find some relationships between these stellar properties. We know that hotter stars are brighter, as described by the Stefan-Boltzmann Law, and we know that the hotter stars are also bluer, as described by Wien's Law. The H-R diagram is a way of displaying an im ...
... brightnesses. Now let's see if we can find some relationships between these stellar properties. We know that hotter stars are brighter, as described by the Stefan-Boltzmann Law, and we know that the hotter stars are also bluer, as described by Wien's Law. The H-R diagram is a way of displaying an im ...
Distance
... Ques4ons • How much does the apparent brightness of stars we see in the sky vary? Why? • Stars have different colors? So is the amount of light at different wavelengths the same? • Can we tell the difference between a very luminous star that is far away and in intrinsically low luminosity st ...
... Ques4ons • How much does the apparent brightness of stars we see in the sky vary? Why? • Stars have different colors? So is the amount of light at different wavelengths the same? • Can we tell the difference between a very luminous star that is far away and in intrinsically low luminosity st ...
_____ 1. Which of the following statements is NOT true about stars
... ___________________ once it has used up all of its hydrogen. The center of the star will _________________ as the atmosphere begins to grow large. The mass of the star will determine if it will be a red giant or a supergiant. 11. What is the difference between a red giant and a supergiant? _________ ...
... ___________________ once it has used up all of its hydrogen. The center of the star will _________________ as the atmosphere begins to grow large. The mass of the star will determine if it will be a red giant or a supergiant. 11. What is the difference between a red giant and a supergiant? _________ ...
Astronomy Day 2006: A short presentation on eclipsing binary stars
... Astronomy Day 2006 A short presentation on eclipsing binary stars presented by the Dark Ridge Observatory Thomas C. Smith, Director http://www.darkridgeobservatory.org ...
... Astronomy Day 2006 A short presentation on eclipsing binary stars presented by the Dark Ridge Observatory Thomas C. Smith, Director http://www.darkridgeobservatory.org ...
1. Stellar Evolution – Notes Astronomers classify stars according to
... The brightness of a star depends upon both its size and its temperature. How bright a star looks from Earth depends on both its distance from Earth and how bright the star actually is. The brightness of a star can be described in two different ways: apparent brightness and absolute brightness. A sta ...
... The brightness of a star depends upon both its size and its temperature. How bright a star looks from Earth depends on both its distance from Earth and how bright the star actually is. The brightness of a star can be described in two different ways: apparent brightness and absolute brightness. A sta ...
Star Basics
... The spectra of O-Type stars shows the presence of hydrogen and helium. At these temperatures most of the hydrogen is ionized, so the hydrogen lines are weak. Both HeI and HeII (singly ionized helium) are seen in the higher temperature examples. The radiation from O5 stars is so intense that it can i ...
... The spectra of O-Type stars shows the presence of hydrogen and helium. At these temperatures most of the hydrogen is ionized, so the hydrogen lines are weak. Both HeI and HeII (singly ionized helium) are seen in the higher temperature examples. The radiation from O5 stars is so intense that it can i ...
Astronomy PPT
... Because of Earth’s rotation, the sun appears to move across the sky. Likewise, if you look at the night sky long enough, the stars also appear to move. All of the stars appear to rotate around Polaris, the North Star, which is almost directly above the Earth’s North Pole. Because of Earth’s rotation ...
... Because of Earth’s rotation, the sun appears to move across the sky. Likewise, if you look at the night sky long enough, the stars also appear to move. All of the stars appear to rotate around Polaris, the North Star, which is almost directly above the Earth’s North Pole. Because of Earth’s rotation ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.