May 2009 Tz 2
... (d) Alnitak is a main sequence star with a luminosity similar to that of Antares. Use the value quoted in (c)(ii) to deduce that the mass of Alnitak is in the range 16 MS to 40 MS, where MS is the mass of the Sun. ...
... (d) Alnitak is a main sequence star with a luminosity similar to that of Antares. Use the value quoted in (c)(ii) to deduce that the mass of Alnitak is in the range 16 MS to 40 MS, where MS is the mass of the Sun. ...
Stars Chapter 21
... • Spectroscope: Breaks light from a distant star into its characteristic color • SPECTRUM: the band of colors that forms as light passes through a prism • Used to see if galaxies are moving away or toward the earth ...
... • Spectroscope: Breaks light from a distant star into its characteristic color • SPECTRUM: the band of colors that forms as light passes through a prism • Used to see if galaxies are moving away or toward the earth ...
annie jump cannon
... stars into the spectral classes O, B, A, F, G, K, M. (mnemonically recognized as Oh Be A Fine Girl Kiss Me) ...
... stars into the spectral classes O, B, A, F, G, K, M. (mnemonically recognized as Oh Be A Fine Girl Kiss Me) ...
Astronomy 111 – Lecture 2
... • All cultures have populated the night sky with constellations. • Most constellations are composed of bright stars that stand out from the others. • Many are named after their appearance. • Peoples greatly separated in distance and/or time often made the same ...
... • All cultures have populated the night sky with constellations. • Most constellations are composed of bright stars that stand out from the others. • Many are named after their appearance. • Peoples greatly separated in distance and/or time often made the same ...
lect3 — 1 Measuring stars: What can be measured?
... H-R diagram distance: We discussed the H-R diagram last time as a relation between temperature and luminosity. In observational terms, it is actually a color-magnitude diagram; color corresponds to temperature, while magnitude corresponds to luminosity. For a main sequence star, M can be estimated b ...
... H-R diagram distance: We discussed the H-R diagram last time as a relation between temperature and luminosity. In observational terms, it is actually a color-magnitude diagram; color corresponds to temperature, while magnitude corresponds to luminosity. For a main sequence star, M can be estimated b ...
read in advance to speed your work
... A, B and so forth. What is the ratio of the number of multiple star systems to single stars? Ignore brown dwarfs. ...
... A, B and so forth. What is the ratio of the number of multiple star systems to single stars? Ignore brown dwarfs. ...
PowerPoint - Star Life Cycle
... Which of the following best describes the category in which the Sun would be placed? A. blue supergiant stars B. red giant stars C. yellow main sequence stars D. white dwarf stars ...
... Which of the following best describes the category in which the Sun would be placed? A. blue supergiant stars B. red giant stars C. yellow main sequence stars D. white dwarf stars ...
The Dramatic Lives of Stars
... C. Shrinks and heats up as it ages D. Shrinks and cools as it ages ...
... C. Shrinks and heats up as it ages D. Shrinks and cools as it ages ...
Physics 2028: Great Ideas in Science II: The Changing Earth Module
... 5. GMCs are usually in hydrostatic equilibrium unless some event occurs to cause a cloud to exceed its Jeans’ mass and/or Jeans’ length as described last semester. What is the trigger? Any process that can cause a stable (M < MJ ) cloudlet to become unstable (M > MJ ). a) Agglomeration: Component cl ...
... 5. GMCs are usually in hydrostatic equilibrium unless some event occurs to cause a cloud to exceed its Jeans’ mass and/or Jeans’ length as described last semester. What is the trigger? Any process that can cause a stable (M < MJ ) cloudlet to become unstable (M > MJ ). a) Agglomeration: Component cl ...
Our Universe
... Kuiper Belt and Orrt Cloudsthese are two areas at the edge of our solar system where comets are located until knocked into a new, closer orbit. ...
... Kuiper Belt and Orrt Cloudsthese are two areas at the edge of our solar system where comets are located until knocked into a new, closer orbit. ...
Chapter14- Our Galaxy - SFA Physics and Astronomy
... In 1917 Harlow Shapley discovered that the globular clusters form a huge spherical system that is not centered on the Earth. ...
... In 1917 Harlow Shapley discovered that the globular clusters form a huge spherical system that is not centered on the Earth. ...
What The Star of Bethlehem Was Not
... This theory has been championed, in various guises, by Patrick Moore. He suggests that the magi saw a bright meteor, or possibly two bright meteors – one to tell them when Jesus was born, the other to tell them that they had arrived at their destination. An alternative which he has proposed is a "Cy ...
... This theory has been championed, in various guises, by Patrick Moore. He suggests that the magi saw a bright meteor, or possibly two bright meteors – one to tell them when Jesus was born, the other to tell them that they had arrived at their destination. An alternative which he has proposed is a "Cy ...
Answer titese questions on a piece of loose leaf paper.
... 3. By wlut process do stars produce energj-'.' ThLs process makes stars do wbart 4. What five cbaracteristics are used to classify stars? 5. What color arc tlic holiest stars? Tile coolest stars? 6. Our sua is a ^-sizcd star. 7. What is the difference between appaiBnt brighmess and absolute brightne ...
... 3. By wlut process do stars produce energj-'.' ThLs process makes stars do wbart 4. What five cbaracteristics are used to classify stars? 5. What color arc tlic holiest stars? Tile coolest stars? 6. Our sua is a ^-sizcd star. 7. What is the difference between appaiBnt brighmess and absolute brightne ...
White Dwarfs
... In a binary system, each star controls a finite region of space, bounded by the Roche Lobes (or Roche surfaces). ...
... In a binary system, each star controls a finite region of space, bounded by the Roche Lobes (or Roche surfaces). ...
Hertzsprung-Russell Diagram
... The Main Sequence At one end, the stars are big, hot and bright. Due to their color and size they are called blue giants, and the very largest are blue supergiants. At the other end they are small, cool and dim and are known as red dwarfs. The sun is right in the middle. ...
... The Main Sequence At one end, the stars are big, hot and bright. Due to their color and size they are called blue giants, and the very largest are blue supergiants. At the other end they are small, cool and dim and are known as red dwarfs. The sun is right in the middle. ...
What is a star? A star is a giant ball of gases held together by gravity
... colors. The coolest stars are red. They are also called M-type stars. Our sun is a G-type star with a surface temperature from 5,000 to 6,000 degrees Kelvin. The hottest stars are blue, also known as Otype stars. They have surface temperatures between 30,000 and 60,000 degrees Kelvin, or 53,500 degr ...
... colors. The coolest stars are red. They are also called M-type stars. Our sun is a G-type star with a surface temperature from 5,000 to 6,000 degrees Kelvin. The hottest stars are blue, also known as Otype stars. They have surface temperatures between 30,000 and 60,000 degrees Kelvin, or 53,500 degr ...
Which object is a meteor?
... short… • It’s not D because the distance is only 93 MILLION miles, not 1 trillion miles. • CORRECT ANSWER: B 1 astronomical unit is defined as the average distance between the Earth and the Sun. ...
... short… • It’s not D because the distance is only 93 MILLION miles, not 1 trillion miles. • CORRECT ANSWER: B 1 astronomical unit is defined as the average distance between the Earth and the Sun. ...
HW11
... difficult to apply these concepts to the material for this exam. Review your last exam and be sure that you understand why certain answers are correct, and others are wrong. New material for this Exam ...
... difficult to apply these concepts to the material for this exam. Review your last exam and be sure that you understand why certain answers are correct, and others are wrong. New material for this Exam ...
For stars
... • Rigel (m = 0.12) • Spica (m = +1.0) • Which looks brighter? Rigel BUT... It turns out that Spica actually gives off 1000 times more light than Rigel!! SO..If Spica is giving off more light, why would it appear dimmer in the sky here at Earth? ...
... • Rigel (m = 0.12) • Spica (m = +1.0) • Which looks brighter? Rigel BUT... It turns out that Spica actually gives off 1000 times more light than Rigel!! SO..If Spica is giving off more light, why would it appear dimmer in the sky here at Earth? ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.