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... exists on the inner faces. Since both the effect of ellipticity and the reflection effect result from the closeness of two stars it is difficult to separate one effect from the other. The proximity gives rise to other effects, too, for not only does one star cause tidal forces that distort the shape ...
... exists on the inner faces. Since both the effect of ellipticity and the reflection effect result from the closeness of two stars it is difficult to separate one effect from the other. The proximity gives rise to other effects, too, for not only does one star cause tidal forces that distort the shape ...
Distance measures - ScienceEducationatNewPaltz
... In reality it is not quite so simple for several reasons. The angle of parallax for even the closest stars is always < 1.0 arcsec so careful observation and precision is required. Corrections have to be made for atmospheric refraction and the effects of "seeing". Also stars actually do appear to mov ...
... In reality it is not quite so simple for several reasons. The angle of parallax for even the closest stars is always < 1.0 arcsec so careful observation and precision is required. Corrections have to be made for atmospheric refraction and the effects of "seeing". Also stars actually do appear to mov ...
Stars and Light
... outward pressure from fusion. • Once the fusion stops, (H runs out) gravity will force the sun to collapse, which will increase the temperature so He can fuse (to form carbon). • When it does this, the outer layers “explode” and it becomes a Red Giant star. ...
... outward pressure from fusion. • Once the fusion stops, (H runs out) gravity will force the sun to collapse, which will increase the temperature so He can fuse (to form carbon). • When it does this, the outer layers “explode” and it becomes a Red Giant star. ...
PPT - Mr.E Science
... universe began 15 to 20 billion years ago. Scientist have viewed thousands of galaxies and can measure the fact that all galaxies are moving away from each other. If you could run the film “backwards”, it would appear that all of the galaxies come together at a single incredibly dense point. Scienti ...
... universe began 15 to 20 billion years ago. Scientist have viewed thousands of galaxies and can measure the fact that all galaxies are moving away from each other. If you could run the film “backwards”, it would appear that all of the galaxies come together at a single incredibly dense point. Scienti ...
Some 250 years ago, the philosopher Immanuel Universal
... of planets, and it has done so everywhere you see a star in the sky. Until recently, this fact could be verified for only one star: the Sun. Then, in 1995, astronomers Michel Mayor and Didier Queloz announced the discovery of the first planet orbiting a star other than the Sun (Nature 378, 355–359; ...
... of planets, and it has done so everywhere you see a star in the sky. Until recently, this fact could be verified for only one star: the Sun. Then, in 1995, astronomers Michel Mayor and Didier Queloz announced the discovery of the first planet orbiting a star other than the Sun (Nature 378, 355–359; ...
Word
... have at an arbitrary standardized distance of 10 parsecs (i.e., 32.6 light-years). #2. Combine the two equations above to show that the difference between a star’s apparent and absolute magnitude is given by m-M = 5 log(d) -5, where “d” is the star’s distance. #3. The Sun’s absolute visual magnitude ...
... have at an arbitrary standardized distance of 10 parsecs (i.e., 32.6 light-years). #2. Combine the two equations above to show that the difference between a star’s apparent and absolute magnitude is given by m-M = 5 log(d) -5, where “d” is the star’s distance. #3. The Sun’s absolute visual magnitude ...
Powerpoint Presentation (large file)
... 1. What kinds of nuclear reactions occur within a star like the Sun as it ages? 2. Where did the carbon atoms in our bodies come from? 3. What is a planetary nebula, and what does it have to do with planets? 4. What is a white dwarf star? 5. Why do high-mass stars go through more evolutionary stages ...
... 1. What kinds of nuclear reactions occur within a star like the Sun as it ages? 2. Where did the carbon atoms in our bodies come from? 3. What is a planetary nebula, and what does it have to do with planets? 4. What is a white dwarf star? 5. Why do high-mass stars go through more evolutionary stages ...
Formation of the Solar System
... • Leftover bodies from planet building in Jovian planet zone. Hence more icy than asteroids. • Oort Cloud and TNOs are sources of comets. For example, a TNO may encounter Neptune and get sent into inner Solar System, where they start to evaporate, grow a tail, and appear as comets. ...
... • Leftover bodies from planet building in Jovian planet zone. Hence more icy than asteroids. • Oort Cloud and TNOs are sources of comets. For example, a TNO may encounter Neptune and get sent into inner Solar System, where they start to evaporate, grow a tail, and appear as comets. ...
Stellar evolution, I
... Stars, like people, spend a certain fraction of their history with negative lifetime. ...
... Stars, like people, spend a certain fraction of their history with negative lifetime. ...
Mountain Skies March 21 2016
... change, it is rising earlier each night and by late May it will be up at sunset. Already up at sunset is the giant planet Jupiter. Under the tail of Leo the lion it is the brightest object in the evening skies other than our nearly full moon. Speaking of which, tonight Jupiter will lie just to the l ...
... change, it is rising earlier each night and by late May it will be up at sunset. Already up at sunset is the giant planet Jupiter. Under the tail of Leo the lion it is the brightest object in the evening skies other than our nearly full moon. Speaking of which, tonight Jupiter will lie just to the l ...
Nuclear Interactions in Supernovae .
... an enormous amount of energy is released from all the hydrogen being fused in a short amount of time. • This causes an explosion on the surface of the dwarf, which doesn’t affect the star, but increases its brightness by 50,000 to 100,000 times that of the sun. ...
... an enormous amount of energy is released from all the hydrogen being fused in a short amount of time. • This causes an explosion on the surface of the dwarf, which doesn’t affect the star, but increases its brightness by 50,000 to 100,000 times that of the sun. ...
Prospecting for Planets – Radial Velocity Searches
... Prospecting for Planets – Radial Velocity Searches The first planet orbiting a star other than our Sun (or 'exoplanet') was discovered in 1992, orbiting an odd type of star known as a pulsar. It wasn't until three years later that the next exoplanet was discovered, this time around a star similar to ...
... Prospecting for Planets – Radial Velocity Searches The first planet orbiting a star other than our Sun (or 'exoplanet') was discovered in 1992, orbiting an odd type of star known as a pulsar. It wasn't until three years later that the next exoplanet was discovered, this time around a star similar to ...
PH507-assn-exo-answers
... Explain the physical property that the parameter [Fe/H] is used to indicate and why its measurement is providing support for the core accretion hypothesis for planet formation (a) Planets orbiting within 0.1 AU of their host star all have close to circular orbits. All detected planets with semi-majo ...
... Explain the physical property that the parameter [Fe/H] is used to indicate and why its measurement is providing support for the core accretion hypothesis for planet formation (a) Planets orbiting within 0.1 AU of their host star all have close to circular orbits. All detected planets with semi-majo ...
Parallels: Proto-Planetary Disks and rings
... frost-line: they attract gas to become gas giants like Jupiter • Star ignites: the gas and dust blown away ...
... frost-line: they attract gas to become gas giants like Jupiter • Star ignites: the gas and dust blown away ...
MIDTERM #1 AST209 - The Cosmos Feb 10, 2012 50 minutes
... A) The planet would begin to move in a long ellipse with the Sun at one focus. B) The planet would stop moving altogether because there would be no gravity acting upon it. C) The planet would move in a straight line tangential to its present orbit. D) The planet would move in a straight line outward ...
... A) The planet would begin to move in a long ellipse with the Sun at one focus. B) The planet would stop moving altogether because there would be no gravity acting upon it. C) The planet would move in a straight line tangential to its present orbit. D) The planet would move in a straight line outward ...
star
... X-rays come from the area around the collapsed star where the material that is falling toward it is heated to very high temperatures (over a million degrees!). ...
... X-rays come from the area around the collapsed star where the material that is falling toward it is heated to very high temperatures (over a million degrees!). ...
Astronomy news
... The accurate parallactic distance (500 Lyrs) of RX J1856 which was supplied by HST has allowed astronomers to use the brightness to estimate its radius. The estimated radius came out to be smaller than 10 km and this was taken as possible evidence that RX J1856 was an exotic object, known as a quark ...
... The accurate parallactic distance (500 Lyrs) of RX J1856 which was supplied by HST has allowed astronomers to use the brightness to estimate its radius. The estimated radius came out to be smaller than 10 km and this was taken as possible evidence that RX J1856 was an exotic object, known as a quark ...
Monday, October 27
... Homework: Luminosity and Distance • Distance and brightness can be used to find the luminosity: L d2 B ...
... Homework: Luminosity and Distance • Distance and brightness can be used to find the luminosity: L d2 B ...
stars - Chatt
... • An enormous explosion when a large star dies. • When all the hydrogen is used up the core collapses • The absence of pressure causes a neutron star or a black hole. • The explosion can be bright enough to see during the day! ...
... • An enormous explosion when a large star dies. • When all the hydrogen is used up the core collapses • The absence of pressure causes a neutron star or a black hole. • The explosion can be bright enough to see during the day! ...
Microlensing in NZ
... Sidney Liebes, “Gravitational Lenses”, Physical Review, 10 Feb 1964:“There appears little likelihood that unbound planet-sized bodies floating about the galaxy would contribute significantly to the frequency of detectable events. For, the associated pulses would be so weak and infrequent and of such ...
... Sidney Liebes, “Gravitational Lenses”, Physical Review, 10 Feb 1964:“There appears little likelihood that unbound planet-sized bodies floating about the galaxy would contribute significantly to the frequency of detectable events. For, the associated pulses would be so weak and infrequent and of such ...
Star of Bethlehem
In Christian tradition, the Star of Bethlehem, also called the Christmas Star, revealed the birth of Jesus to the Biblical Magi, and later led them to Bethlehem. The star appears only in the nativity story of the Gospel of Matthew, where astrologers from the east are inspired by the star to travel to Jerusalem. There they meet King Herod of Judea, and ask where the king of the Jews had been born. Herod, following a verse from the Book of Micah interpreted as a prophecy, directs them to Bethlehem, to the south of Jerusalem. The star leads them to Jesus' home in the town, where they worship him and give him gifts. The wise men are then given a divine warning not to return to Herod so they return home by a different route.Many Christians see the star as a miraculous sign to mark the birth of the Christ (or messiah). Some theologians claimed that the star fulfilled a prophecy, known as the Star Prophecy. Astronomers have made several attempts to link the star to unusual astronomical events, such as a conjunction of Jupiter and Saturn, a comet or a supernova.Many modern scholars do not consider the story to be describing a historical event but a pious fiction created by the author of the Gospel of Matthew.The subject is a favorite at planetarium shows during the Christmas season, although the Biblical account describes Jesus with a broader Greek word, which can mean either ""infant"" or ""child"" (paidon), rather than the more specific word for infant (brephos), possibly implying that some time has passed since the birth. The visit is traditionally celebrated on Epiphany (January 6) in Western Christianity.