Planetarium Key Points
... Latitude is the elevation of the visible pole and, roughly, of Polaris The motion of the sphere seems uniform, for this reason it was the source for time telling, but the time scale that comes from is NOT uniform: rotation is slowing down, the day is longer and longer at the rate of 2 ms a centu ...
... Latitude is the elevation of the visible pole and, roughly, of Polaris The motion of the sphere seems uniform, for this reason it was the source for time telling, but the time scale that comes from is NOT uniform: rotation is slowing down, the day is longer and longer at the rate of 2 ms a centu ...
SPECTRAL ANALYSIS OF A NEWLY DISCOVERED HgMn STAR
... Ni (0.63 dex). We failed to identify more Hg II lines in the range from 5590 to 5840 Å due to the telluric lines. Telluric lines should be reduced to obtain more a precise mercury abundance. New observations at high resolution including 3500 to 4500 Å region may also help to improve the Hg overabund ...
... Ni (0.63 dex). We failed to identify more Hg II lines in the range from 5590 to 5840 Å due to the telluric lines. Telluric lines should be reduced to obtain more a precise mercury abundance. New observations at high resolution including 3500 to 4500 Å region may also help to improve the Hg overabund ...
"Stars" Power Point notes
... • Apparent magnitude is the apparent brightness of a star as measured on Earth. - Apparent magnitude depends on the star’s actual brightness and distance. - The smaller the magnitude number, the brighter the star. (http://spaceweather.com/flybys ) ...
... • Apparent magnitude is the apparent brightness of a star as measured on Earth. - Apparent magnitude depends on the star’s actual brightness and distance. - The smaller the magnitude number, the brighter the star. (http://spaceweather.com/flybys ) ...
Basic Properties of the Stars
... If two stars have the same temperature, each square meter gives off the same amount of light (E = σ T4). If one of the two stars has 100 times the luminosity of the other, it must have 100 times the surface area, or 10 times the diameter. Hertzsprung and Russell realized that the stars at the ...
... If two stars have the same temperature, each square meter gives off the same amount of light (E = σ T4). If one of the two stars has 100 times the luminosity of the other, it must have 100 times the surface area, or 10 times the diameter. Hertzsprung and Russell realized that the stars at the ...
The Life Cycle of a Star
... the star has ignited, it becomes a main sequence star. Main Sequence stars fuse hydrogen to form helium, releasing enormous amounts of energy. It takes about 10 billion years to consume all the hydrogen in a Main Sequence star. ...
... the star has ignited, it becomes a main sequence star. Main Sequence stars fuse hydrogen to form helium, releasing enormous amounts of energy. It takes about 10 billion years to consume all the hydrogen in a Main Sequence star. ...
Untitled
... C. The far (opposite) side only faces the Earth during the daytime when the Sun's light outshines the Moon. D. From time to time we see all the sides of the Moon from the Earth. 13. From the observation that the same side of the Moon always faces the Earth, one can conclude that A. The Moon does not ...
... C. The far (opposite) side only faces the Earth during the daytime when the Sun's light outshines the Moon. D. From time to time we see all the sides of the Moon from the Earth. 13. From the observation that the same side of the Moon always faces the Earth, one can conclude that A. The Moon does not ...
Pre-Workshop Thought Questions 1. List several ways you think
... a. Earth, Moon, Sun, Jupiter The best answer is c, and in a national sample of students in b. Moon, Earth, Sun, Jupiter grades 5-12, 70% answered correctly. Choices d. and b. were each c. Moon, Earth, Jupiter, Sun selected by approximately 10% of students; perhaps these students d. Sun, Moon, Earth, ...
... a. Earth, Moon, Sun, Jupiter The best answer is c, and in a national sample of students in b. Moon, Earth, Sun, Jupiter grades 5-12, 70% answered correctly. Choices d. and b. were each c. Moon, Earth, Jupiter, Sun selected by approximately 10% of students; perhaps these students d. Sun, Moon, Earth, ...
PowerPoint
... Q: Does anything survive the Type II SN Explosion? The inward pressure is enormous, due to the high mass of the star. There is nothing stopping the star from collapsing further; it does so very rapidly, in a giant implosion. As it continues to become more and more dense, the protons and electrons re ...
... Q: Does anything survive the Type II SN Explosion? The inward pressure is enormous, due to the high mass of the star. There is nothing stopping the star from collapsing further; it does so very rapidly, in a giant implosion. As it continues to become more and more dense, the protons and electrons re ...
preliminary version - University of Exeter
... clear why they show a uni-modal distribution, nor why they are rotating more rapidly than the high mass stars (but see Barnes 2003[9]). Furthermore, the low mass stars do not fit into the evolutionary sequence above: the distributions in NGC 2264 and IC 348 are very similar, despite the very differe ...
... clear why they show a uni-modal distribution, nor why they are rotating more rapidly than the high mass stars (but see Barnes 2003[9]). Furthermore, the low mass stars do not fit into the evolutionary sequence above: the distributions in NGC 2264 and IC 348 are very similar, despite the very differe ...
Class 11 and 12 lecture slides (giant planets)
... • So initial accretion was rapid (few Myr) • Uranus and Neptune didn’t acquire so much gas because they were further out and accreted more slowly • Planets will have initially been hot (gravitational energy) and subsequently cooled and contracted • We can investigate how rapidly they are cooling at ...
... • So initial accretion was rapid (few Myr) • Uranus and Neptune didn’t acquire so much gas because they were further out and accreted more slowly • Planets will have initially been hot (gravitational energy) and subsequently cooled and contracted • We can investigate how rapidly they are cooling at ...
The life and times of stars
... Light can be thought of a made of particles called photons, but also as waves! The different colours represent different energy levels of the photons – e.g. a blue photon is more energetic than a red photon A blue photon has a shorter wavelength than a red photon, so the shorter the wavelength the m ...
... Light can be thought of a made of particles called photons, but also as waves! The different colours represent different energy levels of the photons – e.g. a blue photon is more energetic than a red photon A blue photon has a shorter wavelength than a red photon, so the shorter the wavelength the m ...
Name Physics 130 Astronomy Exam 2 August 2, 2004 Multiple Choice
... A is at a distance of 5 pc and star B is at a distance of 25 pc. How will star B appear, compared to star A? a.) Star B will be ½.2 as bright as star A. b.) Star B will be 1/20 as bright as star A. c.) Star B will be 1/25 as bright as star A. d.) Star B will be 1/5 as bright as star A. 21. _____ Whi ...
... A is at a distance of 5 pc and star B is at a distance of 25 pc. How will star B appear, compared to star A? a.) Star B will be ½.2 as bright as star A. b.) Star B will be 1/20 as bright as star A. c.) Star B will be 1/25 as bright as star A. d.) Star B will be 1/5 as bright as star A. 21. _____ Whi ...
Extreme Tidal Waves in Binary Star Systems
... created as the stars are stretched back and forth, as described above. The second way that tides can affect stars is by exciting large scale waves that move within the stars. These waves are periodic global deformations of the star, similar to the ringing of a bell. As the stars orbit one another, t ...
... created as the stars are stretched back and forth, as described above. The second way that tides can affect stars is by exciting large scale waves that move within the stars. These waves are periodic global deformations of the star, similar to the ringing of a bell. As the stars orbit one another, t ...
Star Formation
... star’s core to grow hot enough for fusion. The core temperature continues to rise until star arrives on the main sequence ...
... star’s core to grow hot enough for fusion. The core temperature continues to rise until star arrives on the main sequence ...
Star Fromation and ISM
... in the globular cluster is due to its extreme age – those stars have already used up their fuel and have moved off the main sequence. ...
... in the globular cluster is due to its extreme age – those stars have already used up their fuel and have moved off the main sequence. ...
Comet Pan-Starrs 12 March 2013
... • Massive stars (M>8M) make large cores – Massive star (core collapse) supernovae are Type II ...
... • Massive stars (M>8M) make large cores – Massive star (core collapse) supernovae are Type II ...
