Constellations, Looking Far Away, and Stars/Stellar Evolution
... In this activity, an arm's length equals the distance light would travel in one year. Each participant (ideally at least 5, but the number can be adjusted) is seated one arm's length away from another. The teacher is located an arm's length from the first student, and his/her location is Earth (0 li ...
... In this activity, an arm's length equals the distance light would travel in one year. Each participant (ideally at least 5, but the number can be adjusted) is seated one arm's length away from another. The teacher is located an arm's length from the first student, and his/her location is Earth (0 li ...
Classnotes 9_159 - University of Texas Astronomy
... implies, has no charge. A free (isolated) proton is stable -- experiments have shown that, if it decays, it lives at least 1033 years or so before decaying. A free neutron decays spontaneously in about 11 minutes. A neutron inside a nucleus can be stable. Neutrons and protons basically retain their ...
... implies, has no charge. A free (isolated) proton is stable -- experiments have shown that, if it decays, it lives at least 1033 years or so before decaying. A free neutron decays spontaneously in about 11 minutes. A neutron inside a nucleus can be stable. Neutrons and protons basically retain their ...
MS PowerPoint - National Schools` Observatory
... Introduction This task will use images (or data) from the robotic Liverpool Telescope, in order to calculate the distance and transverse velocity (sideways to our line-of-sight) of Barnard’s Star. ...
... Introduction This task will use images (or data) from the robotic Liverpool Telescope, in order to calculate the distance and transverse velocity (sideways to our line-of-sight) of Barnard’s Star. ...
Nearby Stars - How far away is it
... Mira - 350 light-years Mira is a very high proper motion red star that is shedding an enormous trail of material. The tail stretches a startling 13 light-years across the sky. It has released enough material over the past 30,000 years to seed at least 3,000 Earth-sized planets. [Additional info: It ...
... Mira - 350 light-years Mira is a very high proper motion red star that is shedding an enormous trail of material. The tail stretches a startling 13 light-years across the sky. It has released enough material over the past 30,000 years to seed at least 3,000 Earth-sized planets. [Additional info: It ...
PHYS 2421 EXAM #5 Wednesday, November 11
... 98. To alleviate the traffic congestion between two cities such as Boston and Washington, D.C., engineers have proposed building a rail tunnel along a chord line connecting the cities (Fig. 13-55). A train, unpropelled by any engine and starting from rest, would fall through the first half of the tu ...
... 98. To alleviate the traffic congestion between two cities such as Boston and Washington, D.C., engineers have proposed building a rail tunnel along a chord line connecting the cities (Fig. 13-55). A train, unpropelled by any engine and starting from rest, would fall through the first half of the tu ...
Parallax, Event Horizon, HR diagrams equation
... Physics : distance to the stars and counting the stars "1 Light Year is the distance traveled by light in one year." 1 light year (ly) is equivalent to: 63,270 AU Closer stars could appear larger. More distant stars could be very large, but seem small. How can we tell which stars are farther away? ...
... Physics : distance to the stars and counting the stars "1 Light Year is the distance traveled by light in one year." 1 light year (ly) is equivalent to: 63,270 AU Closer stars could appear larger. More distant stars could be very large, but seem small. How can we tell which stars are farther away? ...
distant stars nearby star parallax angle The principle of geometrical
... Does the star Vega in Lyra appear exceptionally bright because it’s an intrinsically bright star, or simply because it’s unusually close by? What about Betelgeuse in Orion? If we didn’t know the distances to these stars, we wouldn’t know that Betelgeuse is a red giant star, with a much greater intri ...
... Does the star Vega in Lyra appear exceptionally bright because it’s an intrinsically bright star, or simply because it’s unusually close by? What about Betelgeuse in Orion? If we didn’t know the distances to these stars, we wouldn’t know that Betelgeuse is a red giant star, with a much greater intri ...
DP11 Foundations of Astronomy
... know its distance, we can determine its luminosity, from the socalled inverse square law: b = L/4 d2 ...
... know its distance, we can determine its luminosity, from the socalled inverse square law: b = L/4 d2 ...
The star is born
... The proto-star-phase. Protostars are still in the process of attaining star-like structure. Protostars are accompanied by strong outflows and jets, and are surrounded by accretion disks. The disk is pouring more mass onto the protostar. The protostar is hidden within the cocoon of the birth cloud an ...
... The proto-star-phase. Protostars are still in the process of attaining star-like structure. Protostars are accompanied by strong outflows and jets, and are surrounded by accretion disks. The disk is pouring more mass onto the protostar. The protostar is hidden within the cocoon of the birth cloud an ...
How Close is our Nearest Neighbor
... law so that their luminosities could be determined by measuring their periods of variation. These variable stars have been found in other galaxies, including our nearest neighbors. Introduction: Cepheid variable stars are simply stars whose brightness varies regularly. They are called Cepheids becau ...
... law so that their luminosities could be determined by measuring their periods of variation. These variable stars have been found in other galaxies, including our nearest neighbors. Introduction: Cepheid variable stars are simply stars whose brightness varies regularly. They are called Cepheids becau ...
The Milky Way Galaxy
... A: explosion of a massive star that has fused elements in its core all they way up to iron. B: explosive burning of hydrogen on the surface of a white dwarf. C: explosion of a white dwarf in a binary star system after mass has been transferred onto it from a companion star. D: Implosion of a blue su ...
... A: explosion of a massive star that has fused elements in its core all they way up to iron. B: explosive burning of hydrogen on the surface of a white dwarf. C: explosion of a white dwarf in a binary star system after mass has been transferred onto it from a companion star. D: Implosion of a blue su ...
Davis Planetarium
... Time returns, November 3 – don’t forget to turn your clocks back one hour before you go to bed on Saturday, November 2! Comet ISON in conjunction with the Sun, November 28 – You’ll likely hear more about this comet as it makes its way around the Sun. Comet ISON is new to our sky and the show it may ...
... Time returns, November 3 – don’t forget to turn your clocks back one hour before you go to bed on Saturday, November 2! Comet ISON in conjunction with the Sun, November 28 – You’ll likely hear more about this comet as it makes its way around the Sun. Comet ISON is new to our sky and the show it may ...
Outline2a
... material to spin rapidly. The centripetal force fights the collapse in the plane of rotation, but not at the poles. As a result, the material collapses into a disk. ...
... material to spin rapidly. The centripetal force fights the collapse in the plane of rotation, but not at the poles. As a result, the material collapses into a disk. ...
Take our Astronomy Test
... 4. What are the contributions of Ptolemy? 5. What was the contribution of Copernicus? 6. What is a heliocentric model? 7. How does the heliocentric model explain retrograde motion? 8. What were the contributions of Galileo? 9. What were the contributions of Tycho Brahe? 10. What were the contributio ...
... 4. What are the contributions of Ptolemy? 5. What was the contribution of Copernicus? 6. What is a heliocentric model? 7. How does the heliocentric model explain retrograde motion? 8. What were the contributions of Galileo? 9. What were the contributions of Tycho Brahe? 10. What were the contributio ...
Stellar Astronomy Sample Questions for Exam 3
... 2. Describe some of the evidence we have for how we think solar systems like ours form. Where do they form? What types of objects have been observed? How do the observations compare to the nebular model of solar system formation? 3. Describe the hunt for extra-solar planets. What kinds of techniques ...
... 2. Describe some of the evidence we have for how we think solar systems like ours form. Where do they form? What types of objects have been observed? How do the observations compare to the nebular model of solar system formation? 3. Describe the hunt for extra-solar planets. What kinds of techniques ...
Phase Analysis of RV Tauri and Semi-regular Variables Abstract
... RV Tauri variable stars, related classes of pulsating variable stars. The ultimate objective for our research is to determine whether the stars stellar properties such as temperature, radius, and luminosity correlate with their pulsation cycles. In order to determine this, we need to closely examine ...
... RV Tauri variable stars, related classes of pulsating variable stars. The ultimate objective for our research is to determine whether the stars stellar properties such as temperature, radius, and luminosity correlate with their pulsation cycles. In order to determine this, we need to closely examine ...
Lecture 15, PPT version
... The less massive is a star, the less fuel it has, but the longer it will last on the main sequence. The more massive is a star, the more fuel it has, but the shorter it will last on the main sequence. “Low-mass” stars: born with M < 2 Msun “Intermediate-mass” stars: born with 2 Msun < M < 8 Msun “Hi ...
... The less massive is a star, the less fuel it has, but the longer it will last on the main sequence. The more massive is a star, the more fuel it has, but the shorter it will last on the main sequence. “Low-mass” stars: born with M < 2 Msun “Intermediate-mass” stars: born with 2 Msun < M < 8 Msun “Hi ...
Red Giants - Faculty Web Pages
... Most blue stars are Main Sequence stars. But whereas some red stars in the list are simply tiny, cool Main Sequence stars, other red stars of the exact same color are huge Red Giants! Telling the difference between the Main Sequence red stars and the Red Giant stars involves some complex measurement ...
... Most blue stars are Main Sequence stars. But whereas some red stars in the list are simply tiny, cool Main Sequence stars, other red stars of the exact same color are huge Red Giants! Telling the difference between the Main Sequence red stars and the Red Giant stars involves some complex measurement ...
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.