Star Information ppt.
... • What are the two types of star clusters? • Open clusters contain up to several thousand stars and are found in the disk of the galaxy. ...
... • What are the two types of star clusters? • Open clusters contain up to several thousand stars and are found in the disk of the galaxy. ...
Big Bear Valley Astronomical Society
... with the Titans against the gods of Mount Olympus. Another claims they were the attendants of Artemis who were pursued by the giant hunter Orion. They were rescued by the gods who changed them into doves and after death placed them in the heavens a little away from the gaze of Orion. The Pleiades ar ...
... with the Titans against the gods of Mount Olympus. Another claims they were the attendants of Artemis who were pursued by the giant hunter Orion. They were rescued by the gods who changed them into doves and after death placed them in the heavens a little away from the gaze of Orion. The Pleiades ar ...
Answer - Brock physics
... The mass of Star A is greater than the mass of Star B. The radius of Star A is (a) * less than the radius of Star B. (b) greater than the radius of Star B. (c) about the same as the radius of Star B, because all white dwarfs have approximately the same radius. (d) [It’s not possible to say, because ...
... The mass of Star A is greater than the mass of Star B. The radius of Star A is (a) * less than the radius of Star B. (b) greater than the radius of Star B. (c) about the same as the radius of Star B, because all white dwarfs have approximately the same radius. (d) [It’s not possible to say, because ...
Sirius - Springer
... northern winter sky and has understandably drawn the attention of observers of the night sky for thousands of years. ...
... northern winter sky and has understandably drawn the attention of observers of the night sky for thousands of years. ...
Constituents of the Milky Way
... the object simply from the inverse square law of light. l = L / r2 where l is the apparent luminosity, L is the absolute luminosity, and r is the distance. ...
... the object simply from the inverse square law of light. l = L / r2 where l is the apparent luminosity, L is the absolute luminosity, and r is the distance. ...
The Galaxy Presentation 2011
... - More active than halo; typifies much of galactic disk - Within 33 l.y. (10 pc) are over 300 stars - Most are dim, red type M - A few (Sirius, Vega, Altair, Fomalhaut) are bright, white stars younger than Sun - No very massive, short-lived stars (type O or B) - We are in a quiet “suburb,” but it wa ...
... - More active than halo; typifies much of galactic disk - Within 33 l.y. (10 pc) are over 300 stars - Most are dim, red type M - A few (Sirius, Vega, Altair, Fomalhaut) are bright, white stars younger than Sun - No very massive, short-lived stars (type O or B) - We are in a quiet “suburb,” but it wa ...
Solution - Caltech Astronomy
... using the radii from (d). This does not agree particularly well with the 2.3 we found above, indicating that the timing data in this problem are not consistent with the photometry under the assumption that the smaller star passes directly across a diameter of the larger star’s disk. For this homewor ...
... using the radii from (d). This does not agree particularly well with the 2.3 we found above, indicating that the timing data in this problem are not consistent with the photometry under the assumption that the smaller star passes directly across a diameter of the larger star’s disk. For this homewor ...
H-R Diagram
... absolute magnitude. From such a diagram, other information about a star's properties and life cycle can be determined. A simplified H-R diagram appears in your textbook. In this laboratory, you will construct an H-R diagram using data on the 20 stars that are nearest to our sun (Figure 21.1) and the ...
... absolute magnitude. From such a diagram, other information about a star's properties and life cycle can be determined. A simplified H-R diagram appears in your textbook. In this laboratory, you will construct an H-R diagram using data on the 20 stars that are nearest to our sun (Figure 21.1) and the ...
Lesson 37 questions – Gravitational Field - science
... The distance between the centres of the Earth and the Moon is 3.8 x 108 m. Assume that the moon moves in a circular orbit about the centre of the Earth. Estimate the period of this orbit to the nearest day. Mass of Earth = 6.0x1024kg 1 day = 86400s F=mv2/R; F = m(2πR/T)2/R= GMm/ R2 (2πR/T)2/R= GM/ R ...
... The distance between the centres of the Earth and the Moon is 3.8 x 108 m. Assume that the moon moves in a circular orbit about the centre of the Earth. Estimate the period of this orbit to the nearest day. Mass of Earth = 6.0x1024kg 1 day = 86400s F=mv2/R; F = m(2πR/T)2/R= GMm/ R2 (2πR/T)2/R= GM/ R ...
PHY 116 From Newton to Einstein Model Answers to Exercise Sheet 5
... made mostly of neutrons and called a neutron star. The density of the neutron start is roughly 1014 times as great as that of ordinary solid matter. Suppose we represent the start as a uniform solid rigid sphere, both before and after collapse. The star’s initial radius was 7.0 x 105 km (comparable ...
... made mostly of neutrons and called a neutron star. The density of the neutron start is roughly 1014 times as great as that of ordinary solid matter. Suppose we represent the start as a uniform solid rigid sphere, both before and after collapse. The star’s initial radius was 7.0 x 105 km (comparable ...
Script - ESA/Hubble
... But for stars like the Sun, which have a lifespan measured in billions of years, astronomers have made many observations of what happens when the fuel supply runs out. They end with a whimper, not a bang. Here’s how it goes — as revealed by Hubble observations of dozens of stars at different stages ...
... But for stars like the Sun, which have a lifespan measured in billions of years, astronomers have made many observations of what happens when the fuel supply runs out. They end with a whimper, not a bang. Here’s how it goes — as revealed by Hubble observations of dozens of stars at different stages ...
Lecture 17, PPT version
... All of these are stable (neither expanding nor contracting), so long as they are “left alone”. Pressure in white dwarf and neutron star is somewhat exotic (not normal gas pressure or radiation pressure) due to their highly-compressed states. ...
... All of these are stable (neither expanding nor contracting), so long as they are “left alone”. Pressure in white dwarf and neutron star is somewhat exotic (not normal gas pressure or radiation pressure) due to their highly-compressed states. ...
Star Formation
... • This causes a pressure build-up which slows (or stops) the collapse. • Energy is radiated away. ...
... • This causes a pressure build-up which slows (or stops) the collapse. • Energy is radiated away. ...
1. Describe (preferably with a sketch) what astronomer
... c) Describe a change that might occur to your hydrogen atom if it absorbed a photon. (Assume it is still a hydrogen atom, not an ion, after absorbing the photon.) The electron could jump up to a bigger orbit. 1. a) If I wanted to measure the mass of a star, what measurements would I have to make? (T ...
... c) Describe a change that might occur to your hydrogen atom if it absorbed a photon. (Assume it is still a hydrogen atom, not an ion, after absorbing the photon.) The electron could jump up to a bigger orbit. 1. a) If I wanted to measure the mass of a star, what measurements would I have to make? (T ...
Mass
... Because the star is so far away, the scientist could not have the time to receive the radio signals from such a planet. B Because the star is so close that we should have received radio signals from the planet years ago. C Because the radio signals cannot penetrate the Earth’s atmosphere from outer ...
... Because the star is so far away, the scientist could not have the time to receive the radio signals from such a planet. B Because the star is so close that we should have received radio signals from the planet years ago. C Because the radio signals cannot penetrate the Earth’s atmosphere from outer ...
Lecture 22 - Seattle Central
... What are the main stages in a high mass star’s life? What happens in the core of a high mass star at the end of its life? Why does fusion stop at Iron in high mass stars? Where do elements heavier than Iron come from? What are the two possibilities when the electron degeneracy pressure in a high mas ...
... What are the main stages in a high mass star’s life? What happens in the core of a high mass star at the end of its life? Why does fusion stop at Iron in high mass stars? Where do elements heavier than Iron come from? What are the two possibilities when the electron degeneracy pressure in a high mas ...
history of life
... Many researchers now favor the hypothesis that the first hereditary material was not DNA, but RNA, which may also have functioned as the first enzymes. (This helps resolve the "chicken and egg" paradox of which came first, genes or enzymes.) According to this hypothesis, the molecular biology of tod ...
... Many researchers now favor the hypothesis that the first hereditary material was not DNA, but RNA, which may also have functioned as the first enzymes. (This helps resolve the "chicken and egg" paradox of which came first, genes or enzymes.) According to this hypothesis, the molecular biology of tod ...
AST 301 Introduction to Astronomy - University of Texas Astronomy
... Combine parallax and brightness Canopus has twice the parallax of Spica. Since distance α 1 / parallax, Spica must be at twice the distance of Canopus. (The numbers are 100 pc and 200 pc, but you don’t need to know that.) The more distant star (Spica) appears fainter. Since it is twice as distant a ...
... Combine parallax and brightness Canopus has twice the parallax of Spica. Since distance α 1 / parallax, Spica must be at twice the distance of Canopus. (The numbers are 100 pc and 200 pc, but you don’t need to know that.) The more distant star (Spica) appears fainter. Since it is twice as distant a ...
Name: Period: ______ Date: 1/16/07
... So how far away is Proxima Centauri in light-years? To find the answer, divide the distance from Earth to Proxima Centauri (40 trillion km.) by the distance in one light year (9.5 trillion km.) The answer is 4.2 light-years. 1. Why do scientists measure distance in light2. How did the light-year get ...
... So how far away is Proxima Centauri in light-years? To find the answer, divide the distance from Earth to Proxima Centauri (40 trillion km.) by the distance in one light year (9.5 trillion km.) The answer is 4.2 light-years. 1. Why do scientists measure distance in light2. How did the light-year get ...
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.