The Spectrum & Doppler Shift
... special part of the spectrum consists of waves that we can see. This is called the visible spectrum. We see different wavelengths as different colors ranging from red (long wavelengths) to blue/violet (short wavelengths). ...
... special part of the spectrum consists of waves that we can see. This is called the visible spectrum. We see different wavelengths as different colors ranging from red (long wavelengths) to blue/violet (short wavelengths). ...
Slide 1
... element moves to an envelope surrounding the core. This forces the star to expand rather dramatically into a prominent entity known as a red giant. Diagrammatically, the star migrates away from the main sequence and joins the giant branch. Depending on mass, a star may begin a phase of core helium b ...
... element moves to an envelope surrounding the core. This forces the star to expand rather dramatically into a prominent entity known as a red giant. Diagrammatically, the star migrates away from the main sequence and joins the giant branch. Depending on mass, a star may begin a phase of core helium b ...
Unit 4 Space
... Our solar system is full of planets, moons, asteroids and comets, all of which revolve around the Sun at the center. When a star forms from a nebula, gravity pulls most of the material into the new star, but some may also clump together to form objects in a solar system. • A planet is a celestial bo ...
... Our solar system is full of planets, moons, asteroids and comets, all of which revolve around the Sun at the center. When a star forms from a nebula, gravity pulls most of the material into the new star, but some may also clump together to form objects in a solar system. • A planet is a celestial bo ...
Ottawa Citizen
... times and the general progress of astronomy in the 17th century, along with poetic reflections on the universe. It was delivered with style and energy by actor Shaun Smyth. There were also projected images of stars and other astronomical entities that fit the text and the music nicely. Every piece w ...
... times and the general progress of astronomy in the 17th century, along with poetic reflections on the universe. It was delivered with style and energy by actor Shaun Smyth. There were also projected images of stars and other astronomical entities that fit the text and the music nicely. Every piece w ...
PPT file
... “there are more stars in the universe than grains of sand on all the beaches of Earth.” In between stars there is interstellar matter, which is made up of gas (mostly Hydrogen) and dust. Birth of a Star Gravity attracts chunks of gas and dust in a nebula to come ...
... “there are more stars in the universe than grains of sand on all the beaches of Earth.” In between stars there is interstellar matter, which is made up of gas (mostly Hydrogen) and dust. Birth of a Star Gravity attracts chunks of gas and dust in a nebula to come ...
Beyond the Solar System
... However, they were wrong. One simple way of seeing that is to look very carefully at where a star is on one night and then see if it is in exactly the same place 24 hours later - it wont be! In fact the stars rise from the east 4 minutes earlier each night so each star will be a little further to th ...
... However, they were wrong. One simple way of seeing that is to look very carefully at where a star is on one night and then see if it is in exactly the same place 24 hours later - it wont be! In fact the stars rise from the east 4 minutes earlier each night so each star will be a little further to th ...
WORD - UWL faculty websites
... green dot represents the Earth. This diagram is NOT TO SCALE. The bottom panel shows the combined absorption-line spectrum of the stars (with the lines from each star labeled “A” and “B”). A thin "stationary" absorption line appearing between the two lines shows the un-shifted location of each lin ...
... green dot represents the Earth. This diagram is NOT TO SCALE. The bottom panel shows the combined absorption-line spectrum of the stars (with the lines from each star labeled “A” and “B”). A thin "stationary" absorption line appearing between the two lines shows the un-shifted location of each lin ...
Observing Galaxies - Denver Astronomical Society
... view, allowing some nebulosity to be seen, but no detail structure. No color was visible. (The Facts on File Dictionary of Astronomy, Starry Night Pro) M82 was observed on two separate nights (Table 1). The seeing condition was logged as III with haze on one of the nights. M82, also known as the Ci ...
... view, allowing some nebulosity to be seen, but no detail structure. No color was visible. (The Facts on File Dictionary of Astronomy, Starry Night Pro) M82 was observed on two separate nights (Table 1). The seeing condition was logged as III with haze on one of the nights. M82, also known as the Ci ...
Stellar Evolution (Powerpoint) 17
... billions of years to burn, this star burns all at once. BIG explosion! ...
... billions of years to burn, this star burns all at once. BIG explosion! ...
Movements of Objects in Space
... 3. The Earth and all the other planets are orbiting the Sun, all in the same direction, and all in roughly the same plane (i.e. it's like they are all laid out on a large dinner plate with the Sun at the center). The outer planets orbit more slowly than the inner planets. 4. The stars appear station ...
... 3. The Earth and all the other planets are orbiting the Sun, all in the same direction, and all in roughly the same plane (i.e. it's like they are all laid out on a large dinner plate with the Sun at the center). The outer planets orbit more slowly than the inner planets. 4. The stars appear station ...
Targeted and All-Sky Search for Nanosecond Optical Pulses at
... We assume that the transmitting civilization has a catalog of target stars, their positions, proper motions and ranges with sufficient accuracy to permit aiming with an error no greater than ∼ 10 AU when the beam reaches the target. At a range of 1000 ly, this corresponds to a proper motion uncertaint ...
... We assume that the transmitting civilization has a catalog of target stars, their positions, proper motions and ranges with sufficient accuracy to permit aiming with an error no greater than ∼ 10 AU when the beam reaches the target. At a range of 1000 ly, this corresponds to a proper motion uncertaint ...
Astronomical Units and Light Years #2
... the Earth and the Sun. In terms of more common units of measurement, an astronomical unit is equal to about 93 million miles (roughly 150 million km), or the distance light travels in a little over eight minutes. The symbol AU is most often used to represent the astronomical unit, though less common ...
... the Earth and the Sun. In terms of more common units of measurement, an astronomical unit is equal to about 93 million miles (roughly 150 million km), or the distance light travels in a little over eight minutes. The symbol AU is most often used to represent the astronomical unit, though less common ...
The Solar System and its Place in the Galaxy
... encounters with giant molecular clouds in the galactic disk. Thus, older stars can be accelerated to higher mean velocities, as noted earlier. The reason(s) for the Sun's low velocity are not known. Velocity-altering encounters with giant molecular clouds occur with a typical frequency of once every ...
... encounters with giant molecular clouds in the galactic disk. Thus, older stars can be accelerated to higher mean velocities, as noted earlier. The reason(s) for the Sun's low velocity are not known. Velocity-altering encounters with giant molecular clouds occur with a typical frequency of once every ...
Measuring the Properties of Stars
... the separation between the primary and secondary bodies, and the calculation of the period of revolution of the secondary body about the primary body can be made. Actually, this equation can determine the total mass for any system based on knowledge of the period of some revolving object about some ...
... the separation between the primary and secondary bodies, and the calculation of the period of revolution of the secondary body about the primary body can be made. Actually, this equation can determine the total mass for any system based on knowledge of the period of some revolving object about some ...
Answers to Odd-Numbered Exercises and Problems
... ||| A starship is circling a distant planet of radius R. The astronauts find that the free-fall acceleration at their altitude is half the value at the planet’s surface. How far above the surface are they orbiting? Your answer will be a multiple of R. || Three stars, each with the mass and radius of ...
... ||| A starship is circling a distant planet of radius R. The astronauts find that the free-fall acceleration at their altitude is half the value at the planet’s surface. How far above the surface are they orbiting? Your answer will be a multiple of R. || Three stars, each with the mass and radius of ...
For instance, two hydrogen atoms may fuse together to form one
... elements fuse into heavier ones is called nuclear fusion. Nuclear fusion releases huge amounts of energy. When the core of a clump becomes a hot, dense ball of hydrogen gas fusing into helium gas, a star is born. Astronomers classify stars based on their age, color, and brightness. These characteris ...
... elements fuse into heavier ones is called nuclear fusion. Nuclear fusion releases huge amounts of energy. When the core of a clump becomes a hot, dense ball of hydrogen gas fusing into helium gas, a star is born. Astronomers classify stars based on their age, color, and brightness. These characteris ...
Document
... There are two types of Cepheids, with two different period-luminosity relationships. Hubble had unknowingly used the wrong relationship. Like measuring with a Yardstick when he should have used ...
... There are two types of Cepheids, with two different period-luminosity relationships. Hubble had unknowingly used the wrong relationship. Like measuring with a Yardstick when he should have used ...
AAO Fibre Instrument Data Simulator
... • A verification tool for the engineers, instrument scientists and astronomers HERMES 4-channel, N=392, R~28,000, S/N=100 (late 2012) is a complex astronomical spectrograph requiring a simulation tool to assist in the early performance and design verification. ...
... • A verification tool for the engineers, instrument scientists and astronomers HERMES 4-channel, N=392, R~28,000, S/N=100 (late 2012) is a complex astronomical spectrograph requiring a simulation tool to assist in the early performance and design verification. ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.