AAS Poster, NM 2002: "The Discovery of New
... L1) based upon their own interference filter imaging but never confirmed spectroscopically. The exceptions are their “WC9" candidates; none of these were detected in our survey, causing us to question their surprising result that late-type WCs were to be found in such a low metallicity system. ...
... L1) based upon their own interference filter imaging but never confirmed spectroscopically. The exceptions are their “WC9" candidates; none of these were detected in our survey, causing us to question their surprising result that late-type WCs were to be found in such a low metallicity system. ...
10. Exoplanets
... • Close gravitational encounters between two massive planets can eject one planet while flinging the other into a highly elliptical orbit. • Multiple close encounters with smaller planetesimals can also cause inward migration. ...
... • Close gravitational encounters between two massive planets can eject one planet while flinging the other into a highly elliptical orbit. • Multiple close encounters with smaller planetesimals can also cause inward migration. ...
Image Credit: NASA,ESA, HEIC, Hubble
... – Radiates in red and infrared (Temperature is 2000 to 3000K) – Optical light is blocked by dust – Infrared gets through (wavelength large compared to size of dust grains. – Protostars only around for short time (few million years) ...
... – Radiates in red and infrared (Temperature is 2000 to 3000K) – Optical light is blocked by dust – Infrared gets through (wavelength large compared to size of dust grains. – Protostars only around for short time (few million years) ...
View PDF - Sara Seager
... on the terrestrial planets in our own solar system. Earth is touted as the “Goldilocks planet”—not too hot, not too cold, but just right for surface liquid water (14). Venus, 30% closer to the Sun than Earth and receiving 90% more radiation from the Sun, may have had liquid water oceans billions of ...
... on the terrestrial planets in our own solar system. Earth is touted as the “Goldilocks planet”—not too hot, not too cold, but just right for surface liquid water (14). Venus, 30% closer to the Sun than Earth and receiving 90% more radiation from the Sun, may have had liquid water oceans billions of ...
CHAPTER 30: STARS, GALAXIES AND THE UNIVERSE Analyzing
... The second and longest stage in the life of a star is the main-sequence stage. During this stage, energy continues to be generated in the core of the star as hydrogen fuses into helium. A star that has a mass about the same as the sun’s mass stays on the main sequence for about 10 billion years. Sci ...
... The second and longest stage in the life of a star is the main-sequence stage. During this stage, energy continues to be generated in the core of the star as hydrogen fuses into helium. A star that has a mass about the same as the sun’s mass stays on the main sequence for about 10 billion years. Sci ...
Critical Thinking Questions: (work on these with a partner) Post
... 2. Average sized stars like our Sun do not explode as supernova, but super-massive stars do. Both types of stars undergo nuclear fusion and have an outer shell influenced by gravity. Explain why a star like our Sun will not go supernova, but a super-massive star will. Explain your answer describing ...
... 2. Average sized stars like our Sun do not explode as supernova, but super-massive stars do. Both types of stars undergo nuclear fusion and have an outer shell influenced by gravity. Explain why a star like our Sun will not go supernova, but a super-massive star will. Explain your answer describing ...
Candles in the Dark
... again. Some vary irregularly but many follow regular patterns, flickering in seconds or pulsing over years to a steady beat. Why this happens can be explained by the physics going on inside the star, but the details aren’t important here. There is a type of giant yellow variable star called a Cephei ...
... again. Some vary irregularly but many follow regular patterns, flickering in seconds or pulsing over years to a steady beat. Why this happens can be explained by the physics going on inside the star, but the details aren’t important here. There is a type of giant yellow variable star called a Cephei ...
Stefan-Boltzmann`s law Wien`s law
... ► light from distant galaxies/stars is red-shifted (which means they move away from us – as the red-shifting occurs in all direction, the universe must be expanding) ► existence of CMB ► the helium abundance in the universe which is about 25 % and is consistent with a hot beginning of the universe; ...
... ► light from distant galaxies/stars is red-shifted (which means they move away from us – as the red-shifting occurs in all direction, the universe must be expanding) ► existence of CMB ► the helium abundance in the universe which is about 25 % and is consistent with a hot beginning of the universe; ...
Nearby Stars - How far away is it
... Arcturus and Vega. Closer examination finds that Capella is actually four stars organized as two binary systems. Castor - 49.8 light years Castor is actually three sets of binary systems with some bright yellow and some dim red stars. Hipparcos Since 1838, many astronomers have spent decades measuri ...
... Arcturus and Vega. Closer examination finds that Capella is actually four stars organized as two binary systems. Castor - 49.8 light years Castor is actually three sets of binary systems with some bright yellow and some dim red stars. Hipparcos Since 1838, many astronomers have spent decades measuri ...
Stellar Evolution
... 18. What does the core of a star at the end of being a main sequence star look like ? ...
... 18. What does the core of a star at the end of being a main sequence star look like ? ...
Sources of Gravitational Waves Peter Shawhan
... Orbit will continue to decay (inspiral) over the next ~300 million years, until… ...
... Orbit will continue to decay (inspiral) over the next ~300 million years, until… ...
Prof. Kenney C lass 8 September 26, 2016
... 2. Red Giant I (fusing H in shell, no fusion in core) After it fuses all of H in core to He, there is no more H fuel in core to provide the energy & pressure to balance gravity So you’d think that the star would collapse (& not expand/get bigger) But what happens… Core shrinks & heats up Until layer ...
... 2. Red Giant I (fusing H in shell, no fusion in core) After it fuses all of H in core to He, there is no more H fuel in core to provide the energy & pressure to balance gravity So you’d think that the star would collapse (& not expand/get bigger) But what happens… Core shrinks & heats up Until layer ...
More About Individual Term Projects
... planet on each date • Estimate the uncertainty of your measured ...
... planet on each date • Estimate the uncertainty of your measured ...
PDF only
... imbalances among the overlapping energy sources could easily tip a world into an uninhabitable state. No exomoons, habitable or otherwise, have yet been detected with certainty, although some may sooner or later be revealed by archival data from observatories such as NASA’s Kepler space telescope. F ...
... imbalances among the overlapping energy sources could easily tip a world into an uninhabitable state. No exomoons, habitable or otherwise, have yet been detected with certainty, although some may sooner or later be revealed by archival data from observatories such as NASA’s Kepler space telescope. F ...
Astronomy
... Play first aid game: one scout pulls a condition out of a jar and can either choose to describe the condition or how to treat it. A second scout must describe the opposite (if the first scout describes the condition, the second scout must describe how to treat, or visa versa). If the second scout ...
... Play first aid game: one scout pulls a condition out of a jar and can either choose to describe the condition or how to treat it. A second scout must describe the opposite (if the first scout describes the condition, the second scout must describe how to treat, or visa versa). If the second scout ...
Solutions3
... that of the star, and a radius 0.015 = 0.12 that of the star. If the star is a main sequence G star like our Sun, its radius will be 0.12 times R , or 8.4 × 107 m. Jupiter’s radius is 11.2 Earth radii, or 7.1 × 107 m; so the transiter is slightly (1.2 times) larger than Jupiter. b) If the star is a ...
... that of the star, and a radius 0.015 = 0.12 that of the star. If the star is a main sequence G star like our Sun, its radius will be 0.12 times R , or 8.4 × 107 m. Jupiter’s radius is 11.2 Earth radii, or 7.1 × 107 m; so the transiter is slightly (1.2 times) larger than Jupiter. b) If the star is a ...
Events - Temecula Valley Astronomers
... the Almagest. It was produced sometime in the mid-100s AD. Ptolemy applied a system of brightnesses that originated with Hipparchus. The brightest stars were said to be 1 st magnitude. The faintest stars were said to be 6th magnitude. This is the ancient origin of the system we still use in modern a ...
... the Almagest. It was produced sometime in the mid-100s AD. Ptolemy applied a system of brightnesses that originated with Hipparchus. The brightest stars were said to be 1 st magnitude. The faintest stars were said to be 6th magnitude. This is the ancient origin of the system we still use in modern a ...
test - Scioly.org
... 1. Consider an object of .2 solar masses orbiting the Sun. The object’s orbit has a semimajor axis of 6 AU. a. How long is its period in years? b. Consider the points A, B, C, D on the orbit of the object. The arc length from point A to point B is .225 AU. The arc length from point C to D is .556 AU ...
... 1. Consider an object of .2 solar masses orbiting the Sun. The object’s orbit has a semimajor axis of 6 AU. a. How long is its period in years? b. Consider the points A, B, C, D on the orbit of the object. The arc length from point A to point B is .225 AU. The arc length from point C to D is .556 AU ...