OVERVIEW ABSTRACT HST/COS chemical abundance analysis of
... ✦ Hyper Metal-Poor (HMP) stars are the local equivalents to the high-redshift Universe. In their atmospheres, they carry imprints of the nucleosynthetic signatures of their progenitors Pop III (“First”) stars [1]. They retain the chemical composition of the interstellar medium at the time and place ...
... ✦ Hyper Metal-Poor (HMP) stars are the local equivalents to the high-redshift Universe. In their atmospheres, they carry imprints of the nucleosynthetic signatures of their progenitors Pop III (“First”) stars [1]. They retain the chemical composition of the interstellar medium at the time and place ...
Quiz # 4 - Oglethorpe University
... 3. Why did the temperature start to rise at the center of the solar nebula? A) Supernova explosions were stirring up the material there and causing turbulence. B) The nebula was contracting, which increased the speed of the atoms moving in it. C) Fusion reactions were beginning in the core, releasin ...
... 3. Why did the temperature start to rise at the center of the solar nebula? A) Supernova explosions were stirring up the material there and causing turbulence. B) The nebula was contracting, which increased the speed of the atoms moving in it. C) Fusion reactions were beginning in the core, releasin ...
What is a Star? - Lisle CUSD 202
... like dark spots The Nebula to the left is called the horsehead nebula, it can be found in Orion ...
... like dark spots The Nebula to the left is called the horsehead nebula, it can be found in Orion ...
SS_L4
... Initial contraction of a massive cloud proceeds providing it is not opposed by increasing P. Releasing Egrav increases T (and hence P), but puts H2 molecules into excited rotational levels. De-excitation emits a photon at 28.2m. Cloud is transparent at 28.2m, so radiation cools cloud, allowing con ...
... Initial contraction of a massive cloud proceeds providing it is not opposed by increasing P. Releasing Egrav increases T (and hence P), but puts H2 molecules into excited rotational levels. De-excitation emits a photon at 28.2m. Cloud is transparent at 28.2m, so radiation cools cloud, allowing con ...
Instructor Notes
... What do we mean by thermal pressure? In a gas, the molecules are always in motion. The hotter the gas, the faster the motion, with many molecules trying to move away from the center (the gas tries to expand). When a gas is compressed, it heats up, and so its thermal pressure increases. ...
... What do we mean by thermal pressure? In a gas, the molecules are always in motion. The hotter the gas, the faster the motion, with many molecules trying to move away from the center (the gas tries to expand). When a gas is compressed, it heats up, and so its thermal pressure increases. ...
Lesson 3 - The DK Foundation
... cannot be a purely intellectual exercise. Knowing the name of our stars is the first step, but it is only a first step. The preparation is part of the process: making time, physically travelling to places where we are able to see the stars clearly, and then locating our ‘own’ stars in order to esta ...
... cannot be a purely intellectual exercise. Knowing the name of our stars is the first step, but it is only a first step. The preparation is part of the process: making time, physically travelling to places where we are able to see the stars clearly, and then locating our ‘own’ stars in order to esta ...
Document
... Giant because when it becomes a giant star it may become so large that it will engulf Earth, in which case the planet will be destroyed. Even if this doesn’t happen, the sun will expand so far out that the temperatures on Earth will be so high that all the oceans will evaporate away, and there will ...
... Giant because when it becomes a giant star it may become so large that it will engulf Earth, in which case the planet will be destroyed. Even if this doesn’t happen, the sun will expand so far out that the temperatures on Earth will be so high that all the oceans will evaporate away, and there will ...
Criss-Cross Puzzle
... 4. Forms when the solar wind separates dust from the coma, pushing it outward away from the Sun. 5. The solid icy/rocky part of a comet. 7. The path of the Solar System between the Sun and the orbit of Jupiter 8. A "dirty snowball" consisting of ices, rocks, and dirt. 9. The time needed for one comp ...
... 4. Forms when the solar wind separates dust from the coma, pushing it outward away from the Sun. 5. The solid icy/rocky part of a comet. 7. The path of the Solar System between the Sun and the orbit of Jupiter 8. A "dirty snowball" consisting of ices, rocks, and dirt. 9. The time needed for one comp ...
5 Sun`s Motion
... Sidereal Day: 1 rotation with respect to the stars 23:56 Solar Day: 1 rotation with respect to the sun 24:00 ...
... Sidereal Day: 1 rotation with respect to the stars 23:56 Solar Day: 1 rotation with respect to the sun 24:00 ...
Exercise 4
... 8. The presence of hydrogen absorption lines only indicates that there are hydrogen lines in the outer atmosphere of star, but the amount of hydrogen is unknown. 9. For Statement 1, from the H-R diagram, luminosity of W = luminosity of X, and temperature of W is higher than that of X, so according t ...
... 8. The presence of hydrogen absorption lines only indicates that there are hydrogen lines in the outer atmosphere of star, but the amount of hydrogen is unknown. 9. For Statement 1, from the H-R diagram, luminosity of W = luminosity of X, and temperature of W is higher than that of X, so according t ...
Here - Al Ghaf
... diagram 2.1. It may take a few hours to dry completely in room temperature. For the Saturn, remember to put the “ring” plate in between the two hemispheres before snapping them together as in diagram 2.2. Leave the assembly of the Sun until step 4. ...
... diagram 2.1. It may take a few hours to dry completely in room temperature. For the Saturn, remember to put the “ring” plate in between the two hemispheres before snapping them together as in diagram 2.2. Leave the assembly of the Sun until step 4. ...
Stellar Evolution
... • C, N, O produced by nuclear burning, transported to surface by convection. • Roman numeral indicates ionization state: I = neutral, II = one electron missing, III = two electrons missing, etc. ...
... • C, N, O produced by nuclear burning, transported to surface by convection. • Roman numeral indicates ionization state: I = neutral, II = one electron missing, III = two electrons missing, etc. ...
Day-13
... planets that orbit near the Sun orbit with shorter periods than planets that are far from the Sun MASS DOES NOT MATTER Both have p = 1 year ...
... planets that orbit near the Sun orbit with shorter periods than planets that are far from the Sun MASS DOES NOT MATTER Both have p = 1 year ...
Measuring the Age of the Universe
... Make a Paper Tape Solar System(cont)! • Assume 5 meters is distance from Jupiter to Sun (= 5 “AU’s” Earth is at 1 AU -- the Sun is at one end, Jupiter at other. 1 AU = 1 meter is the distance from the sun to the earth. • Without thinking, search your heart and emotions for the best size circle (dra ...
... Make a Paper Tape Solar System(cont)! • Assume 5 meters is distance from Jupiter to Sun (= 5 “AU’s” Earth is at 1 AU -- the Sun is at one end, Jupiter at other. 1 AU = 1 meter is the distance from the sun to the earth. • Without thinking, search your heart and emotions for the best size circle (dra ...
Intro to Astronomy
... Not only were they moving, but they were all moving away from one another as though they were all on the surface of a balloon that was inflating. He made this discovery using something called the Doppler effect also known as “red shift.” ...
... Not only were they moving, but they were all moving away from one another as though they were all on the surface of a balloon that was inflating. He made this discovery using something called the Doppler effect also known as “red shift.” ...
Rotation of the Sun - University of California, Berkeley
... neutrinos (ν) have very little mass, and travel near the speed of light. They hardly react with anything. They can escape directly from the core, unlike photons. Hence we can observe them to probe directly the conditions in the core of the Sun. ...
... neutrinos (ν) have very little mass, and travel near the speed of light. They hardly react with anything. They can escape directly from the core, unlike photons. Hence we can observe them to probe directly the conditions in the core of the Sun. ...