Astronomical Motions I: The Night Sky
... Early Greek observers viewed the sky as a transparent sphere which surrounded the Earth. They divided the stars into six categories of brightness with the brightest stars called first magnitude, the next brightest second magnitude, and so on down to the faintest stars visible to the naked eye, sixth ...
... Early Greek observers viewed the sky as a transparent sphere which surrounded the Earth. They divided the stars into six categories of brightness with the brightest stars called first magnitude, the next brightest second magnitude, and so on down to the faintest stars visible to the naked eye, sixth ...
Star Formation - University of Redlands
... grains. • Small clumps grow bigger. • Bigger clumps have more mass and attract more matter. • Planetesimals are the building blocks of the planets. Orion Nebula – Copyright O’Dell and Wong ...
... grains. • Small clumps grow bigger. • Bigger clumps have more mass and attract more matter. • Planetesimals are the building blocks of the planets. Orion Nebula – Copyright O’Dell and Wong ...
PHYSICS 110: PHYSICS OF EVERYDAY PHENOMENA
... of stars from nebulae to novae and dwarfs; the structure of the galaxies and universes; current theories of cosmology; the origin and the evolution of our solar system; the search for extra-solar planets; the search of extraterrestrial life, and space travel; techniques and technologies for making f ...
... of stars from nebulae to novae and dwarfs; the structure of the galaxies and universes; current theories of cosmology; the origin and the evolution of our solar system; the search for extra-solar planets; the search of extraterrestrial life, and space travel; techniques and technologies for making f ...
Teaching astrophysics in VCE Physics
... inverse square law). This is normally called the luminosity of the star and is measured in watts. It is basically the power output of the star! But how do we measure the power output of a star? $ Actually it is not so difficult! We know that we receive about 1 kW from the Sun on a square metre. In s ...
... inverse square law). This is normally called the luminosity of the star and is measured in watts. It is basically the power output of the star! But how do we measure the power output of a star? $ Actually it is not so difficult! We know that we receive about 1 kW from the Sun on a square metre. In s ...
January 14 - Astronomy
... This off axis force, or torque on the Earth causes Earth’s rotation axis to vary slightly, or precess, over long periods of time. Thus, the celestial poles trace out a circle against the stars over a period 26,000 years. ...
... This off axis force, or torque on the Earth causes Earth’s rotation axis to vary slightly, or precess, over long periods of time. Thus, the celestial poles trace out a circle against the stars over a period 26,000 years. ...
Our Place In the Universe
... Galaxies may exist at that distance, but their light would be too faint for our telescopes to see. Because looking 15 billion light-years away means looking to a time before the universe existed. ...
... Galaxies may exist at that distance, but their light would be too faint for our telescopes to see. Because looking 15 billion light-years away means looking to a time before the universe existed. ...
Homework #8 1. Problem 10.21 2. The Origin of the Main Sequence
... For each part below you will likely need to use the results of the previous parts and ρ ∝ M/R3 from above. Remember that we are primarily interested in the scalings (or proportionality) between different physical properties of stars (M, L, ...), so for the most part you do not need to keep constant ...
... For each part below you will likely need to use the results of the previous parts and ρ ∝ M/R3 from above. Remember that we are primarily interested in the scalings (or proportionality) between different physical properties of stars (M, L, ...), so for the most part you do not need to keep constant ...
Lecture Nine (Powerpoint format) - Flash
... Other disk galaxies have been observed to have their own system of globular clusters surrounding them. Some globulars may pass through the plane of the galactic disk from time to time, stripping away some stars in a “disk shocking”. ...
... Other disk galaxies have been observed to have their own system of globular clusters surrounding them. Some globulars may pass through the plane of the galactic disk from time to time, stripping away some stars in a “disk shocking”. ...
Basic Patterns and Motions in the Sky
... North and South (Terrestrial) Poles have undefined longitudes Terrestrial Equator – 0º latitude Horizon – boundary between Earth and sky (gigantic circle surrounding you) Celestial Sphere – Imaginary sphere that you are at the center at and everything in the Universe is “painted” on it Horizon Coord ...
... North and South (Terrestrial) Poles have undefined longitudes Terrestrial Equator – 0º latitude Horizon – boundary between Earth and sky (gigantic circle surrounding you) Celestial Sphere – Imaginary sphere that you are at the center at and everything in the Universe is “painted” on it Horizon Coord ...
Ch.11 Massive star death
... Supernovae are 10,000 times more luminous than novae! Massive star supernova: (Type II) Massive star builds up 1.4 Msun core and collapses into a neutron star, gravitational PE released in explosion White dwarf supernova: (Type I) ...
... Supernovae are 10,000 times more luminous than novae! Massive star supernova: (Type II) Massive star builds up 1.4 Msun core and collapses into a neutron star, gravitational PE released in explosion White dwarf supernova: (Type I) ...
The Celestial Sphere
... stars that the eye picks out. The stars are usually not near each other; they just lie in the same direction. • Historically, the brightest stars are stars of the 1st magnitude. The next brightest are stars of the 2nd magnitude. The faintest stars one can see by eye are 6th magnitude. (The biggest ...
... stars that the eye picks out. The stars are usually not near each other; they just lie in the same direction. • Historically, the brightest stars are stars of the 1st magnitude. The next brightest are stars of the 2nd magnitude. The faintest stars one can see by eye are 6th magnitude. (The biggest ...
Lecture 11: Stars, HR diagram.
... Description? temperature, luminosity, size, mass, radius, etc. Are these characteristics related? This is what the Herzsprung-Russel (or HR from now on) is all about. Example: HR diagrams for two clusters M67 (young) and M4 (old) What can we learn from this? ...
... Description? temperature, luminosity, size, mass, radius, etc. Are these characteristics related? This is what the Herzsprung-Russel (or HR from now on) is all about. Example: HR diagrams for two clusters M67 (young) and M4 (old) What can we learn from this? ...
Astronomical Distances
... One of the hardest concepts to get your head around in astronomy is just how big the things we talk about really are. Walking from P.E. to the auto shop at NVHS is a long way, but is it a long way when we are talking about traveling by car? In a car, going from Chicago to Champaign is a long way, bu ...
... One of the hardest concepts to get your head around in astronomy is just how big the things we talk about really are. Walking from P.E. to the auto shop at NVHS is a long way, but is it a long way when we are talking about traveling by car? In a car, going from Chicago to Champaign is a long way, bu ...
Astronomy Activity: The Life-Line of the Stars
... All stars are not the same distance away. Obviously, a star which is far away will appear dimmer than a similar star which is closer. We adjust for the distance of stars by giving stars an absolute brightness . The absolute magnitude of a star is ...
... All stars are not the same distance away. Obviously, a star which is far away will appear dimmer than a similar star which is closer. We adjust for the distance of stars by giving stars an absolute brightness . The absolute magnitude of a star is ...
To learn how the shape and period of... To learn how the shape of the orbit... Gravity, Orbits and Kepler’s Laws
... 3. Imagine another solar system with a star of the same mass as the Sun. In this solar system there is a planet with a mass twice that of Earth orbiting at a distance of 1 AU from the star. What is the orbital period of that planet? Explain your answer based on what you observed in this activity. 4. ...
... 3. Imagine another solar system with a star of the same mass as the Sun. In this solar system there is a planet with a mass twice that of Earth orbiting at a distance of 1 AU from the star. What is the orbital period of that planet? Explain your answer based on what you observed in this activity. 4. ...
2b. Which of Kepler`s laws did this illustrate? (State the law – don`t
... 3. Imagine another solar system with a star of the same mass as the Sun. In this solar system there is a planet with a mass twice that of Earth orbiting at a distance of 1 AU from the star. What is the orbital period of that planet? Explain your answer based on what you observed in this activity. 4. ...
... 3. Imagine another solar system with a star of the same mass as the Sun. In this solar system there is a planet with a mass twice that of Earth orbiting at a distance of 1 AU from the star. What is the orbital period of that planet? Explain your answer based on what you observed in this activity. 4. ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.