Stars and The Universe
... called a white dwarf. 12. Shrinking will cause the sun to turn white (becoming a white dwarf). Why? As the sun shrinks, it compresses itself. This causes it to heat back up and turn from red to white. 13. Eventually, our sun will turn into a black dwarf. Why? The energy it has as a white dwarf will ...
... called a white dwarf. 12. Shrinking will cause the sun to turn white (becoming a white dwarf). Why? As the sun shrinks, it compresses itself. This causes it to heat back up and turn from red to white. 13. Eventually, our sun will turn into a black dwarf. Why? The energy it has as a white dwarf will ...
Stellar Evolution - Lick Observatory
... • HII stands for ionized hydrogen. The process is UV photons from the hot, newly formed O stars ionize hydrogen atoms in the surrounding gas. • When electrons recombine with protons (ionized hydrogen atoms), the electrons cascade through the energy levels. A high probability step on the epath to the ...
... • HII stands for ionized hydrogen. The process is UV photons from the hot, newly formed O stars ionize hydrogen atoms in the surrounding gas. • When electrons recombine with protons (ionized hydrogen atoms), the electrons cascade through the energy levels. A high probability step on the epath to the ...
Unit 4.4 Bohr`s Model of the Atom Objectives Newton and Light
... • The spacing between energy levels for atoms other than hydrogen are not as systematic and result in much more complicated line spectra. • Each element has a unique line spectrum and the intensity of a line is proportional to the amount of that element in the sample. ...
... • The spacing between energy levels for atoms other than hydrogen are not as systematic and result in much more complicated line spectra. • Each element has a unique line spectrum and the intensity of a line is proportional to the amount of that element in the sample. ...
The age–metallicity distribution of earth-harbouring stars
... • The density of stars in the age– metallicity plane provides valuable constraints for the chemical evolution theory. Our result confirms that younger stars are, on average, more metalrich than older stars. There is a very small scatter around a mean relation, although the number of stars formed at ...
... • The density of stars in the age– metallicity plane provides valuable constraints for the chemical evolution theory. Our result confirms that younger stars are, on average, more metalrich than older stars. There is a very small scatter around a mean relation, although the number of stars formed at ...
Document
... Claudius Ptolemy: Ptolemy wrote a book that contained the key astronomical ideas of the time. From about 150 AD, his model dominated scientific thought. He thought the solar system was geocentric—the planets and sun travel around Earth in “epicycles,” or large perfectly circular orbits. His model i ...
... Claudius Ptolemy: Ptolemy wrote a book that contained the key astronomical ideas of the time. From about 150 AD, his model dominated scientific thought. He thought the solar system was geocentric—the planets and sun travel around Earth in “epicycles,” or large perfectly circular orbits. His model i ...
Formation of Our Solar System Formation of Our
... • As the disk began to cool, different elements and compounds were able to condense depending on their distance from the Sun – determined compositions of the forming planets. Hotter Cooler ...
... • As the disk began to cool, different elements and compounds were able to condense depending on their distance from the Sun – determined compositions of the forming planets. Hotter Cooler ...
Stars and Galaxies Review
... they are deeper in the photosphere. they are cooler than the surrounding part of the photosphere. they are dead parts of the Sun. they are warmer than the surrounding part of the photosphere. ...
... they are deeper in the photosphere. they are cooler than the surrounding part of the photosphere. they are dead parts of the Sun. they are warmer than the surrounding part of the photosphere. ...
ppt
... Very low fluxes (~1/cm2/s @5 MeV) conceivable with care and effort: •Good depth to avoid b-n cosmogenics (e.g. 9Li—prefer no heavy element for n-capture) • Efficient muon veto of n, std 5m water shield to cut n, PMT, rock g • Ultrapurity to cut internal g < 5 MeV • Locate far from high power reactor ...
... Very low fluxes (~1/cm2/s @5 MeV) conceivable with care and effort: •Good depth to avoid b-n cosmogenics (e.g. 9Li—prefer no heavy element for n-capture) • Efficient muon veto of n, std 5m water shield to cut n, PMT, rock g • Ultrapurity to cut internal g < 5 MeV • Locate far from high power reactor ...
Document
... The Sun is a star. We live by its warmth. We die by its extreme heat or frigid absence. It is the source of nearly all our energy. – How? ...
... The Sun is a star. We live by its warmth. We die by its extreme heat or frigid absence. It is the source of nearly all our energy. – How? ...
Pocket Solar System - University of Virginia
... Why isn’t Pluto a planet? In 2006 the International Astronomical Union redefined the criteria for a body orbiting our Sun to be considered a planet. These criteria are: (i) the object must be in orbit around the Sun (it cannot just be passing through!); (ii) the object be ...
... Why isn’t Pluto a planet? In 2006 the International Astronomical Union redefined the criteria for a body orbiting our Sun to be considered a planet. These criteria are: (i) the object must be in orbit around the Sun (it cannot just be passing through!); (ii) the object be ...
Main Sequence Lifetime
... divided by rate at which fuel is used (proportional to luminosity) • The Sun has an estimated MS lifetime of ten billion years • For other MS stars, lifetime is given by ...
... divided by rate at which fuel is used (proportional to luminosity) • The Sun has an estimated MS lifetime of ten billion years • For other MS stars, lifetime is given by ...
Astronomy Assignment #1
... Protostars emit the maximum of their radiation at infrared wavelengths due to the heat they generate from converting gravitational energy while they collapse into thermal energy. IR radiation has the characteristic of being able to penetrate through dust and gas. Thus, even though the protostars are ...
... Protostars emit the maximum of their radiation at infrared wavelengths due to the heat they generate from converting gravitational energy while they collapse into thermal energy. IR radiation has the characteristic of being able to penetrate through dust and gas. Thus, even though the protostars are ...
The Big Bang Theory
... Visible wavelengths emitted by objects moving away from us are shifted towards the red part of the visible spectrum The faster they move away from us, the more they are redshifted. Thus, redshift is a reasonable way to measure the speed of an object (this, by the way, is the principal by which radar ...
... Visible wavelengths emitted by objects moving away from us are shifted towards the red part of the visible spectrum The faster they move away from us, the more they are redshifted. Thus, redshift is a reasonable way to measure the speed of an object (this, by the way, is the principal by which radar ...
Overview of the Solar System
... All of the planets orbit the Sun in the same plane All planetary orbits are nearly circular All planets orbit the Sun in the same “direction” Most planets rotate in the same sense as the orbit. ...
... All of the planets orbit the Sun in the same plane All planetary orbits are nearly circular All planets orbit the Sun in the same “direction” Most planets rotate in the same sense as the orbit. ...
ppt - Faculty Virginia
... All of the planets orbit the Sun in the same plane All planetary orbits are nearly circular All planets orbit the Sun in the same “direction” Most planets rotate in the same sense as the orbit. ...
... All of the planets orbit the Sun in the same plane All planetary orbits are nearly circular All planets orbit the Sun in the same “direction” Most planets rotate in the same sense as the orbit. ...
Digital Moon - Net Start Class
... A class is planning a trip to the beach. They would like to choose a day that will be the most sunny yet have a lower temperature for the daily high. Based on this five-day prediction, which day should they choose? ...
... A class is planning a trip to the beach. They would like to choose a day that will be the most sunny yet have a lower temperature for the daily high. Based on this five-day prediction, which day should they choose? ...
Name
... Why did Galileo infer that the phases of Venus are a result of that planet’s moving around the sun rather than around Earth? After all, the moon has phases, and it revolves around Earth. The answer lies in how Venus’s apparent shape and size change. Figure 1 shows Venus at several places in its orbi ...
... Why did Galileo infer that the phases of Venus are a result of that planet’s moving around the sun rather than around Earth? After all, the moon has phases, and it revolves around Earth. The answer lies in how Venus’s apparent shape and size change. Figure 1 shows Venus at several places in its orbi ...
Astro 10 Lecture 1 - Intro to Astronomy
... • Remember that any model must be supported by evidence! • Each of the models mentioned above makes predictions that we can test ...
... • Remember that any model must be supported by evidence! • Each of the models mentioned above makes predictions that we can test ...