1. How can we detect extra-solar planets?
... In recent years a growing number of exoplanets have been detected via transits = temporary drop in brightness of parent star as the planet crosses the star’s disk along our line of sight. ...
... In recent years a growing number of exoplanets have been detected via transits = temporary drop in brightness of parent star as the planet crosses the star’s disk along our line of sight. ...
Chapter 40
... because it looks like a face surrounded by a furry hood. The hood is, in fact, a ring of comet-shaped objects flying away from a dying star. Eskimo is 5,000 light years from Earth. ...
... because it looks like a face surrounded by a furry hood. The hood is, in fact, a ring of comet-shaped objects flying away from a dying star. Eskimo is 5,000 light years from Earth. ...
Goal: To understand how to find the brightness of stars and what
... • Well, if you know how bright a star is supposed to be and how bright it appears to be you can tell how far away it is. • If you know how far away a star is, how bright it appears to be, and what its temperature is, then you can find what its actual brightness is, and with it how big it is (in size ...
... • Well, if you know how bright a star is supposed to be and how bright it appears to be you can tell how far away it is. • If you know how far away a star is, how bright it appears to be, and what its temperature is, then you can find what its actual brightness is, and with it how big it is (in size ...
The Sun and other Stars
... Stars begin as interstellar clouds – A mix of gas. When stars like the Sun begin to fuse H to He they fall into the Main sequence stars. The Sun will remain a main sequence star until uses about 90% of its fuel in the core. This is the beginning of the End ...
... Stars begin as interstellar clouds – A mix of gas. When stars like the Sun begin to fuse H to He they fall into the Main sequence stars. The Sun will remain a main sequence star until uses about 90% of its fuel in the core. This is the beginning of the End ...
What is a Star - Optics Institute of Southern California
... The final ingredient in determining the structure of a main sequence star is the source of heat in the interior, nuclear reactions. There are many of these, and the details are complicated and there is still some uncertainty about the exact rates for the reactions (for example, the solar neutrino pr ...
... The final ingredient in determining the structure of a main sequence star is the source of heat in the interior, nuclear reactions. There are many of these, and the details are complicated and there is still some uncertainty about the exact rates for the reactions (for example, the solar neutrino pr ...
Cosmic Distance Ladder
... Parallax and distance • Only direct measure of distance astronomers have for objects beyond solar system is parallax – Parallax: apparent motion of nearby stars against background of very distant stars as Earth orbits the Sun – Requires images of the same star at two different times of year separat ...
... Parallax and distance • Only direct measure of distance astronomers have for objects beyond solar system is parallax – Parallax: apparent motion of nearby stars against background of very distant stars as Earth orbits the Sun – Requires images of the same star at two different times of year separat ...
Chapter 30 Notes
... Constellation- a group of stars organized in a recognizable pattern. In 1930, astronomers around the world agreed upon a standard set of 88 constellations. Multiple star systems Over half of all observed stars form multiple-star systems. Binary stars are pairs of stars that revolve around each other ...
... Constellation- a group of stars organized in a recognizable pattern. In 1930, astronomers around the world agreed upon a standard set of 88 constellations. Multiple star systems Over half of all observed stars form multiple-star systems. Binary stars are pairs of stars that revolve around each other ...
ASTRONOMY 120
... Roughly how big (in A.U.) will the Sun become when it enters the red-giant phase? (3 points) A star like the Sun will evolve into a red giant with a size about 100 times its current size. This is equivalent to about 70 million km, or almost half an AU. 5. Chaisson Review and Discussion 20.8 Do all s ...
... Roughly how big (in A.U.) will the Sun become when it enters the red-giant phase? (3 points) A star like the Sun will evolve into a red giant with a size about 100 times its current size. This is equivalent to about 70 million km, or almost half an AU. 5. Chaisson Review and Discussion 20.8 Do all s ...
Are Cool Stars Popular? Better Ask Sol
... Understanding how this activity affects planets in our solar system is important for determining if far away planet systems could support life. Yet, 70% of the observable universe is made up of red stars that are too dim to see with the naked eye, because they have cooler surfaces and are less than ...
... Understanding how this activity affects planets in our solar system is important for determining if far away planet systems could support life. Yet, 70% of the observable universe is made up of red stars that are too dim to see with the naked eye, because they have cooler surfaces and are less than ...
Outline 8: History of the Universe and Solar System
... Total time is 5 hours. Total distance is 380 miles. If you were observed traveling at 60 mph and had covered 380 miles, the assumption would be made that you had traveled for 6 hours and 20 minutes (380miles/60mph) rather than 5 hours. ...
... Total time is 5 hours. Total distance is 380 miles. If you were observed traveling at 60 mph and had covered 380 miles, the assumption would be made that you had traveled for 6 hours and 20 minutes (380miles/60mph) rather than 5 hours. ...
Earth
... •To produce elements heavier than Fe, enormous amounts of energy are needed which is thought to derive solely from the cataclysmic explosions of supernovae. •In the supernova explosion, a large flux of energetic neutrons is produced and nuclei bombarded by these neutrons build up mass one unit at a ...
... •To produce elements heavier than Fe, enormous amounts of energy are needed which is thought to derive solely from the cataclysmic explosions of supernovae. •In the supernova explosion, a large flux of energetic neutrons is produced and nuclei bombarded by these neutrons build up mass one unit at a ...
Interview With a White Dwarf – Teacher Guide
... “Our galaxy, by conservative estimates, contains 100 billion stars. The small number of stars we can see at night are the nearby stars in our tiny neighborhood of our galaxy. Stars are not eternal, but live long lives compared to our lifetime. Over time they change. Just like you can look at a famil ...
... “Our galaxy, by conservative estimates, contains 100 billion stars. The small number of stars we can see at night are the nearby stars in our tiny neighborhood of our galaxy. Stars are not eternal, but live long lives compared to our lifetime. Over time they change. Just like you can look at a famil ...
CO 2 Cycle
... – Where are the hot stars in the HR diagram? – Where are the big stars? – Where are the bright (high luminosity) stars? ...
... – Where are the hot stars in the HR diagram? – Where are the big stars? – Where are the bright (high luminosity) stars? ...
Introduction to Astronomy (high school)
... orange star in the constellation Orion, and Dubhe, the second-magnitude star at the edge of the Big Dipper's cup (Ursa Major). A few proper star names are not Arabic. One is Polaris, the second-magnitude star at the end of the handle of the Little Dipper (Ursa Minor). Polaris also carries the popula ...
... orange star in the constellation Orion, and Dubhe, the second-magnitude star at the edge of the Big Dipper's cup (Ursa Major). A few proper star names are not Arabic. One is Polaris, the second-magnitude star at the end of the handle of the Little Dipper (Ursa Minor). Polaris also carries the popula ...
08 September: How far away are the closest stars?
... of the Sun • The 34 stars are contained in 25 star systems • Those visible to the naked eye are Alpha Centauri (A & B), Sirius, Epsilon Eridani, Epsilon Indi, Tau Ceti, and Procyon • We won’t see any of them tonight! ...
... of the Sun • The 34 stars are contained in 25 star systems • Those visible to the naked eye are Alpha Centauri (A & B), Sirius, Epsilon Eridani, Epsilon Indi, Tau Ceti, and Procyon • We won’t see any of them tonight! ...
What We Know About Stars So Far
... Earth. The closer a star is to the Earth, the brighter it would appear. They used a scale of 1 – 6 1 = brightest stars 6 = least bright stars ...
... Earth. The closer a star is to the Earth, the brighter it would appear. They used a scale of 1 – 6 1 = brightest stars 6 = least bright stars ...
LAB #3 - GEOCITIES.ws
... Because what we know about stars is due solely to our analysis of their light, it is very important to develop further the idea of stellar magnitude, or how bright a star is. When the Greeks scientist Hipparcos determined the magnitude scale, he did it "by eye." The first stars that "came out" at ni ...
... Because what we know about stars is due solely to our analysis of their light, it is very important to develop further the idea of stellar magnitude, or how bright a star is. When the Greeks scientist Hipparcos determined the magnitude scale, he did it "by eye." The first stars that "came out" at ni ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.