Astronomy 103
... Bavaria developed the spectroscope in the early 1800's. Wollaston was the first to see dark lines in the spectrum of the Sun and by 1863, it was known that these dark lines were identical to patterns of spectral lines from particular elements found on the Earth. (One set of lines failed to match the ...
... Bavaria developed the spectroscope in the early 1800's. Wollaston was the first to see dark lines in the spectrum of the Sun and by 1863, it was known that these dark lines were identical to patterns of spectral lines from particular elements found on the Earth. (One set of lines failed to match the ...
Introduction and some basic concepts
... Since we all live on this planet, it is useful to know that the Earth is 8000 miles in diameter. The mean distance from the Earth to the Sun (the Astronomical Unit) is 93 million miles (150 million km). It takes light 8.3 minutes to travel from the Sun to the Earth. ...
... Since we all live on this planet, it is useful to know that the Earth is 8000 miles in diameter. The mean distance from the Earth to the Sun (the Astronomical Unit) is 93 million miles (150 million km). It takes light 8.3 minutes to travel from the Sun to the Earth. ...
The Heliocentric Model of the Solar System
... • At first sight, the night Sky appears as a sphere, a vault surrounding us with little bright ‘dots’, the stars ‘fixed’ on it. The patterns of the ‘fixed stars’ appear stable in time. – we call this vault Celestial Sphere and the stars on it Fixed Stars ...
... • At first sight, the night Sky appears as a sphere, a vault surrounding us with little bright ‘dots’, the stars ‘fixed’ on it. The patterns of the ‘fixed stars’ appear stable in time. – we call this vault Celestial Sphere and the stars on it Fixed Stars ...
Ch2a
... degrees/day. Now, the Earth also spins on it’s axis 360 degrees in 24 hours which works out to be 15 degrees per hour, or 15 degrees/60 min = 0.25 degrees/minute. So, if you want to see the stars in exactly the same place in the sky as the night before, you have to go out 0.98/0.25 = 3.9 which is ~ ...
... degrees/day. Now, the Earth also spins on it’s axis 360 degrees in 24 hours which works out to be 15 degrees per hour, or 15 degrees/60 min = 0.25 degrees/minute. So, if you want to see the stars in exactly the same place in the sky as the night before, you have to go out 0.98/0.25 = 3.9 which is ~ ...
The Easily Visible Sky Tools of Astronomy Stars Galaxies Cosmology
... A Star’s brightness, depends on its distance from us. - there are stars much more luminous than our sun in the sky, however, they are not nearly as bright because they are far away. - Scientists will use apparent brightness and flux interchangeably. A star’s apparent brightness = ...
... A Star’s brightness, depends on its distance from us. - there are stars much more luminous than our sun in the sky, however, they are not nearly as bright because they are far away. - Scientists will use apparent brightness and flux interchangeably. A star’s apparent brightness = ...
Chapter 24
... Stellar brightness • Magnitude • Two types of measurement • Apparent magnitude • Brightness when a star is viewed from Earth • Decreases with distance • Numbers are used to designate magnitudes dim stars have large numbers and negative numbers are also used ...
... Stellar brightness • Magnitude • Two types of measurement • Apparent magnitude • Brightness when a star is viewed from Earth • Decreases with distance • Numbers are used to designate magnitudes dim stars have large numbers and negative numbers are also used ...
star map looking north january-march
... Our nearest large galaxy – Andromeda – can be seen in the Andromeda constellation. It appears to us as an elongated fuzzy blob. The Andromeda galaxy is so far away that its light takes over two million years to reach us. ...
... Our nearest large galaxy – Andromeda – can be seen in the Andromeda constellation. It appears to us as an elongated fuzzy blob. The Andromeda galaxy is so far away that its light takes over two million years to reach us. ...
2017 Div. C (High School) Astronomy Help Session
... a white dwarf. The other star can be anything from a giant star to another white dwarf. Material is drawn off the other star (filling its “Roche” limit) onto the white dwarf until the white dwarf reaches the Chandrasekhar limit. Then electron degeneracy pressure is unable to prevent catastrophic col ...
... a white dwarf. The other star can be anything from a giant star to another white dwarf. Material is drawn off the other star (filling its “Roche” limit) onto the white dwarf until the white dwarf reaches the Chandrasekhar limit. Then electron degeneracy pressure is unable to prevent catastrophic col ...
Stars: Binary Systems
... If the orbital plane is inclined to the line of sight then the observed radial velocity is only a fraction of the actual radial velocity since vobs = vr sin i, where i is the angle of inclination. The angle of inclination, i, is measured from the line of sight to the normal of the orbital plane. i = ...
... If the orbital plane is inclined to the line of sight then the observed radial velocity is only a fraction of the actual radial velocity since vobs = vr sin i, where i is the angle of inclination. The angle of inclination, i, is measured from the line of sight to the normal of the orbital plane. i = ...
The Sizes of Stars
... faster than material further away. If there’s a lot of material in a disk, this will cause the atoms will rub up against each other. There will be friction! So The material will lose orbital energy and spiral in The disk will get real hot. The faster the gas moves, the greater the friction, and ...
... faster than material further away. If there’s a lot of material in a disk, this will cause the atoms will rub up against each other. There will be friction! So The material will lose orbital energy and spiral in The disk will get real hot. The faster the gas moves, the greater the friction, and ...
Unit 3 - Section 8.9 Life of Stars
... remains as a White Dwarf and eventually cools to become a Black Dwarf. Our Sun is a Low Mass Star. High Mass Star A High Mass Star is 10 times or more the size of our Sun. After the Red Giant phase, a High Mass Star undergoes a Supernova explosion. If the remnants of the explosion are between1 ...
... remains as a White Dwarf and eventually cools to become a Black Dwarf. Our Sun is a Low Mass Star. High Mass Star A High Mass Star is 10 times or more the size of our Sun. After the Red Giant phase, a High Mass Star undergoes a Supernova explosion. If the remnants of the explosion are between1 ...
Slide 1
... Formation of the Solar System Nebular Theory = sun and planets formed from a rotating disk of dust and gases. Planetesimals = small, irregular-shaped bodies that collided and clumped together to form the planets. ...
... Formation of the Solar System Nebular Theory = sun and planets formed from a rotating disk of dust and gases. Planetesimals = small, irregular-shaped bodies that collided and clumped together to form the planets. ...
WK8revised
... "One of the most impressive discoveries was the origin of the energy of the stars. One of the men who discovered this was out with his girl friend the night after he realized that nuclear reactions must be going on in the stars in order to make them shine. She said "Look at how pretty the stars shin ...
... "One of the most impressive discoveries was the origin of the energy of the stars. One of the men who discovered this was out with his girl friend the night after he realized that nuclear reactions must be going on in the stars in order to make them shine. She said "Look at how pretty the stars shin ...
Is There Life in Space?
... NEBULA: Cloud of dust and gas where stars are born Black Hole: is a region of space from which nothing, including light, can escape. It is the result of the deformation of spacetime caused by a very compact mass. NEUTRON STAR: A neutron star is about 20 km in diameter and has the mass of about 1.4 t ...
... NEBULA: Cloud of dust and gas where stars are born Black Hole: is a region of space from which nothing, including light, can escape. It is the result of the deformation of spacetime caused by a very compact mass. NEUTRON STAR: A neutron star is about 20 km in diameter and has the mass of about 1.4 t ...
1. How old is our sun now? How does its present luminosity
... (b) The luminosity of the star is an absolute measure of the amount of energy the star radiates and does not depend on distance. It will be a 10 L star regardless of where you put it. 4. What is the final remnant left behind at the end of the life of a 15 M star? What event precedes the formation ...
... (b) The luminosity of the star is an absolute measure of the amount of energy the star radiates and does not depend on distance. It will be a 10 L star regardless of where you put it. 4. What is the final remnant left behind at the end of the life of a 15 M star? What event precedes the formation ...
17 The Deaths of Stars
... Low-mass stars die without an explosion leaving stars of reduced mass called white dwarfs and remnants of expanding gases called planetary nebulae. High-mass stars die explosively as type II supernovae leaving cores of reduced mass, neutron stars or stellar black holes, and remnants of expanding gas ...
... Low-mass stars die without an explosion leaving stars of reduced mass called white dwarfs and remnants of expanding gases called planetary nebulae. High-mass stars die explosively as type II supernovae leaving cores of reduced mass, neutron stars or stellar black holes, and remnants of expanding gas ...
Level :3ASS3-4 School Year: 2009/2010 English
... Our solar system consists of an average star we call the Sun, the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. It includes also the satellites of the planets; numerous comets, asteroids, and meteoroids. The moon is the satellite rotating around the Erath and the ...
... Our solar system consists of an average star we call the Sun, the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. It includes also the satellites of the planets; numerous comets, asteroids, and meteoroids. The moon is the satellite rotating around the Erath and the ...
Ordering_The_Universe
... Planet Sun’s Neighbors Local Group/Cluster Star Natural Satellite Solar System Galaxy Universe Super Cluster ...
... Planet Sun’s Neighbors Local Group/Cluster Star Natural Satellite Solar System Galaxy Universe Super Cluster ...
Today`s Powerpoint
... While on Main Sequence, stellar core has H -> He fusion, by p-p chain in stars like Sun or less massive. In more massive stars, “CNO cycle” becomes more important. ...
... While on Main Sequence, stellar core has H -> He fusion, by p-p chain in stars like Sun or less massive. In more massive stars, “CNO cycle” becomes more important. ...
deep space - altaastronomy
... • The gravitational pull in a black hole is so strong, that nothing, not even light, can escape • Einstein's Theory of Relativity: Light is attracted by ...
... • The gravitational pull in a black hole is so strong, that nothing, not even light, can escape • Einstein's Theory of Relativity: Light is attracted by ...
The Sun: Not An Average Yellow Star
... colors of the rainbow in roughly equal amounts, which is white light. If the Sun were yellow, then white T-shirts would look yellow in the mid-day sunshine. When you observe the Sun safely, by projecting its image through a pinhole camera or a telescope, you see that it is white. Don’t stare directl ...
... colors of the rainbow in roughly equal amounts, which is white light. If the Sun were yellow, then white T-shirts would look yellow in the mid-day sunshine. When you observe the Sun safely, by projecting its image through a pinhole camera or a telescope, you see that it is white. Don’t stare directl ...
The Sun is a mass of Incandescent Gas
... Massive stars have a mass 3x times that of the Sun. Some are 50x that of the Sun! Massive stars evolve in a similar way to a small stars until it reaches its main sequence stage (see small stars, stages 1-4). The stars shine steadily until the hydrogen has fused to form helium ( it takes billions of ...
... Massive stars have a mass 3x times that of the Sun. Some are 50x that of the Sun! Massive stars evolve in a similar way to a small stars until it reaches its main sequence stage (see small stars, stages 1-4). The stars shine steadily until the hydrogen has fused to form helium ( it takes billions of ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.