ppt
... Therefore stars have an extremely large gravitational attraction that keeps their plasma held together. As gravity acts equally in all directions the plasma that forms the star is moulded into a sphere. But there must be some force keeping the star from collapsing in on itself. Because stars are so ...
... Therefore stars have an extremely large gravitational attraction that keeps their plasma held together. As gravity acts equally in all directions the plasma that forms the star is moulded into a sphere. But there must be some force keeping the star from collapsing in on itself. Because stars are so ...
29 Jan: Maps of the Sky
... The SC1 constellation chart Let’s use the SC1 to find some stars which are visible in the early evening sky. (1) The “belt stars” in the constellation of Orion. RA=5h30m, dec=-2d (2) Sirius, brightest star in the sky, main star in Canis Majoris, RA=6h45m, dec=-16d (3) Mars right now: RA=8h52m, dec=2 ...
... The SC1 constellation chart Let’s use the SC1 to find some stars which are visible in the early evening sky. (1) The “belt stars” in the constellation of Orion. RA=5h30m, dec=-2d (2) Sirius, brightest star in the sky, main star in Canis Majoris, RA=6h45m, dec=-16d (3) Mars right now: RA=8h52m, dec=2 ...
NIE10x301Sponsor Thank You (Page 1)
... arranged into three large groups. The smallest are scruffy little dwarf galaxies comprising “only” millions of stars in a rough blob. Dwarf galaxies are often satellites of larger galaxies, the way moons orbit planets. The rest are broadly divided into elliptical and spiral galaxies. Our own Milky W ...
... arranged into three large groups. The smallest are scruffy little dwarf galaxies comprising “only” millions of stars in a rough blob. Dwarf galaxies are often satellites of larger galaxies, the way moons orbit planets. The rest are broadly divided into elliptical and spiral galaxies. Our own Milky W ...
Comet Lulin - indstate.edu
... Since Comet Lulin will be moving opposite the motion of the Earth, it will appear to approach us and move away especially fast. Beginning in February 2009, Comet Lulin will rise at about midnight local time, and will be about 6th or 7th magnitude. This won't be bright enough to go out and look at ...
... Since Comet Lulin will be moving opposite the motion of the Earth, it will appear to approach us and move away especially fast. Beginning in February 2009, Comet Lulin will rise at about midnight local time, and will be about 6th or 7th magnitude. This won't be bright enough to go out and look at ...
The Life Cycle of a Star
... The core is now very dense and very hot. (A tablespoon full would weigh 5 tons!) A white dwarf is about 8,000 miles in diameter. After 35,000 years, the core begins to cool. ...
... The core is now very dense and very hot. (A tablespoon full would weigh 5 tons!) A white dwarf is about 8,000 miles in diameter. After 35,000 years, the core begins to cool. ...
Stellar Evolution Hertzsprung-Russell Diagram Hertzsprung
... some go through nova/supernova stage most become black dwarfs and disappear ...
... some go through nova/supernova stage most become black dwarfs and disappear ...
Bluffer`s Guide to Sirius
... seen for the first time. This odd little star is Sirius B (sometimes Sirius ‘proper’ is called Sirius A) or the Pup (since its bigger partner is the Dog Star) and is classed as a white dwarf. White dwarfs are not a clan of bearded mini-Vikings from ‘The Lord of the Rings’, they are old stars on thei ...
... seen for the first time. This odd little star is Sirius B (sometimes Sirius ‘proper’ is called Sirius A) or the Pup (since its bigger partner is the Dog Star) and is classed as a white dwarf. White dwarfs are not a clan of bearded mini-Vikings from ‘The Lord of the Rings’, they are old stars on thei ...
Star Life Cycle
... Stellar Evolution: Life of the The most massive stars have Star the shortest lives. Stars that are 25 to 50 times that of the sun live for only a few million years. Stars like our Sun live for about 10 billion years. Stars less massive than the Sun have even longer life spans ...
... Stellar Evolution: Life of the The most massive stars have Star the shortest lives. Stars that are 25 to 50 times that of the sun live for only a few million years. Stars like our Sun live for about 10 billion years. Stars less massive than the Sun have even longer life spans ...
Nuclear Interactions in Supernovae .
... • When a low mass star ( a star < 8 solar masses) runs out of fusion material, its core contracts inward while its outer layers of hydrogen and helium expand. • The outer layers expand because when the carbonoxygen core contracts, the increased pressure causes a rise in heat, which excites the molec ...
... • When a low mass star ( a star < 8 solar masses) runs out of fusion material, its core contracts inward while its outer layers of hydrogen and helium expand. • The outer layers expand because when the carbonoxygen core contracts, the increased pressure causes a rise in heat, which excites the molec ...
Powerpoint Presentation (large file)
... • Relatively young Population I stars are metal rich; ancient Population II stars are metal poor • The metals (heavy elements) in Population I stars were manufactured by thermonuclear reactions in an earlier generation of Population II stars, then ejected into space and incorporated into a later ste ...
... • Relatively young Population I stars are metal rich; ancient Population II stars are metal poor • The metals (heavy elements) in Population I stars were manufactured by thermonuclear reactions in an earlier generation of Population II stars, then ejected into space and incorporated into a later ste ...
The Hertzsprung-Russell Diagram
... 9. Label the following steps on your H-R diagram to show the series of changes that our sun has undergone since its formation 4.6 billion years ago. a. Originally, a big cloud of gas and dust called a nebula condensed to form a young, cool star called a red dwarf. In this first stage of life, our s ...
... 9. Label the following steps on your H-R diagram to show the series of changes that our sun has undergone since its formation 4.6 billion years ago. a. Originally, a big cloud of gas and dust called a nebula condensed to form a young, cool star called a red dwarf. In this first stage of life, our s ...
Chapter 10 Hertzsprung-Russel Diagrams and Distance to Stars
... to the stars were unknown, one could not determine the intrinsic brightness of a star, but only its apparent brightness. As we’ve already said, a bright star that’s very far away would appear much fainter than a dim star that’s much closer. To overcome this problem, scientists began to look at stars ...
... to the stars were unknown, one could not determine the intrinsic brightness of a star, but only its apparent brightness. As we’ve already said, a bright star that’s very far away would appear much fainter than a dim star that’s much closer. To overcome this problem, scientists began to look at stars ...
H-R Diagram Lab
... 3. Using the same graph, plot the stars from Group 2. 4. Once you have plotted the stars from Group 2, answer the following questions. Label this group of questions as “Group 2 Questions.” a. Do the Group 2 stars follow the same pattern as the Group 1 stars that you plotted? Explain. b. Overall, are ...
... 3. Using the same graph, plot the stars from Group 2. 4. Once you have plotted the stars from Group 2, answer the following questions. Label this group of questions as “Group 2 Questions.” a. Do the Group 2 stars follow the same pattern as the Group 1 stars that you plotted? Explain. b. Overall, are ...
Pretest
... measures how far light travels through space in one year. 12. The distance that a star so far away would appear to move when seen from opposite sides of Earth’s orbit would be too small to measure accurately. 13. A star is born when nuclear fusion begins. 14. Most star formation takes place in the s ...
... measures how far light travels through space in one year. 12. The distance that a star so far away would appear to move when seen from opposite sides of Earth’s orbit would be too small to measure accurately. 13. A star is born when nuclear fusion begins. 14. Most star formation takes place in the s ...
Conceptobasico.pdf
... For example, you will see stars of spectral type B9, G4, and K3. Principle Spectral Types type color temperature description example O blue 25,000 to 40,000 strong lines of ionized helium Zeta Orionis and highly ionized metals B blue 11,000 to 25,000 lines of neutral helium, Spica weak hydrogen line ...
... For example, you will see stars of spectral type B9, G4, and K3. Principle Spectral Types type color temperature description example O blue 25,000 to 40,000 strong lines of ionized helium Zeta Orionis and highly ionized metals B blue 11,000 to 25,000 lines of neutral helium, Spica weak hydrogen line ...
Note
... • You want to detect the faint star of an unresolved binary system comprising a B5V star and an M0V companion. What wavelength regime would you choose to try to detect the M0V star? What is the ratio of the flux from the B star to the flux from the M star at that wavelength? • You want to detect the ...
... • You want to detect the faint star of an unresolved binary system comprising a B5V star and an M0V companion. What wavelength regime would you choose to try to detect the M0V star? What is the ratio of the flux from the B star to the flux from the M star at that wavelength? • You want to detect the ...
Lesson Plan - ScienceA2Z.com
... The International Astronomical Union (IAU) divides the sky into 88 official constellations with exact boundaries, so that every direction or place in the sky belongs within one constellation. In the northern hemisphere, these are mostly based upon the constellations of the ancient Greek tradition, p ...
... The International Astronomical Union (IAU) divides the sky into 88 official constellations with exact boundaries, so that every direction or place in the sky belongs within one constellation. In the northern hemisphere, these are mostly based upon the constellations of the ancient Greek tradition, p ...
Physical Science Laboratory: Skyglobe
... . to be able to identify Polaris, Vega, Sirius, and other prominent stars. . to be able to describe the Sun’s movement across the sky during the equinoxes and solstices. . to identify a few of the major constellations such as Ursa Major, Ursa Minor, Cassiopia, Orion and the Zodiac. . to be able to u ...
... . to be able to identify Polaris, Vega, Sirius, and other prominent stars. . to be able to describe the Sun’s movement across the sky during the equinoxes and solstices. . to identify a few of the major constellations such as Ursa Major, Ursa Minor, Cassiopia, Orion and the Zodiac. . to be able to u ...
Hertzsprung-Russell Diagrams and Distance to Stars
... to the stars were unknown, one could not determine the intrinsic brightness of a star, but only its apparent brightness. As we’ve already said, a bright star that’s very far away would appear much fainter than a dim star that’s much closer. To overcome this problem, scientists began to look at stars ...
... to the stars were unknown, one could not determine the intrinsic brightness of a star, but only its apparent brightness. As we’ve already said, a bright star that’s very far away would appear much fainter than a dim star that’s much closer. To overcome this problem, scientists began to look at stars ...
canopus e.g procyon
... Proxima Centauri is a faint red star that orbits Alpha-Centauri A and B with a period of about one million years. Proxima Centauri is 4.22 light years from the Earth (now) and about 0.24 light years from Alpha-Centauri A and B. • Alpha-Centauri A and B – a double star system with a period of about ...
... Proxima Centauri is a faint red star that orbits Alpha-Centauri A and B with a period of about one million years. Proxima Centauri is 4.22 light years from the Earth (now) and about 0.24 light years from Alpha-Centauri A and B. • Alpha-Centauri A and B – a double star system with a period of about ...
_____ 1. Which of the following statements is NOT true about stars
... generated as ___________________________ atoms fuse together into _____________________________ atoms. A main sequence star will begin to change once the hydrogen begins to run out. 10. The red giants stage begins after the ___________________________ stage of a star. In this 3rd stage a red giant w ...
... generated as ___________________________ atoms fuse together into _____________________________ atoms. A main sequence star will begin to change once the hydrogen begins to run out. 10. The red giants stage begins after the ___________________________ stage of a star. In this 3rd stage a red giant w ...
Canis Minor
Canis Minor /ˌkeɪnɨs ˈmaɪnər/ is a small constellation in the northern celestial hemisphere. In the second century, it was included as an asterism, or pattern, of two stars in Ptolemy's 48 constellations, and it is counted among the 88 modern constellations. Its name is Latin for ""lesser dog"", in contrast to Canis Major, the ""greater dog""; both figures are commonly represented as following the constellation of Orion the hunter.Canis Minor contains only two stars brighter than the fourth magnitude, Procyon (Alpha Canis Minoris), with a magnitude of 0.34, and Gomeisa (Beta Canis Minoris), with a magnitude of 2.9. The constellation's dimmer stars were noted by Johann Bayer, who named eight stars including Alpha and Beta, and John Flamsteed, who numbered fourteen. Procyon is the seventh-brightest star in the night sky, as well as one of the closest. A yellow-white main sequence star, it has a white dwarf companion. Gomeisa is a blue-white main sequence star. Luyten's Star is a ninth-magnitude red dwarf and the Solar System's next closest stellar neighbour in the constellation after Procyon. The fourth-magnitude HD 66141, which has evolved into an orange giant towards the end of its life cycle, was discovered to have a planet in 2012. There are two faint deep sky objects within the constellation's borders. The 11 Canis-Minorids are a meteor shower that can be seen in early December.