Physical Science Lecture Notes
... 3. Spectrographs: break light into its visible components a. Astronomers use spectrograths to determine temperatures and chemical composition of the stars they are looking at. B. Characteristics of Stars 1. Constellation: a group or pattern of stars in the night sky that appeared as symbols or figur ...
... 3. Spectrographs: break light into its visible components a. Astronomers use spectrograths to determine temperatures and chemical composition of the stars they are looking at. B. Characteristics of Stars 1. Constellation: a group or pattern of stars in the night sky that appeared as symbols or figur ...
stars and planets
... • There are only around 2,500 stars visible to the naked eye at any one time in the night sky.The nearest star to our solar system is Proxima Centauri which is 4.2 light years away.The Sun is part of a single star system but there are also binary and multiple stars where 2 or more stars orbit around ...
... • There are only around 2,500 stars visible to the naked eye at any one time in the night sky.The nearest star to our solar system is Proxima Centauri which is 4.2 light years away.The Sun is part of a single star system but there are also binary and multiple stars where 2 or more stars orbit around ...
physics_cosmic_engine - HSC Guru
... luminosity against its colour or surface temperature (todo: Hertzsprung-Russell diagram here may be copyright, please find one that can be put here and put it here) The Hertzsprung-Russell diagram plots a stars surface temperature against it’s luminosity. Each dot is a star. The stars can be classed ...
... luminosity against its colour or surface temperature (todo: Hertzsprung-Russell diagram here may be copyright, please find one that can be put here and put it here) The Hertzsprung-Russell diagram plots a stars surface temperature against it’s luminosity. Each dot is a star. The stars can be classed ...
Tools of Modern Astronomy Slide Show
... spectrum! 8. There are 2 types of visible light telescopes: __________ & _____________. Refracting telescopes focus light through a objective _____________ lens onto an eyepiece. Reflecting telescopes focus light onto a __________ onto an eyepiece. 9. The Earth’s _______________ distorts EM radiatio ...
... spectrum! 8. There are 2 types of visible light telescopes: __________ & _____________. Refracting telescopes focus light through a objective _____________ lens onto an eyepiece. Reflecting telescopes focus light onto a __________ onto an eyepiece. 9. The Earth’s _______________ distorts EM radiatio ...
The Danger of Deadly Cosmic Explosions
... • Across galaxy, maybe 50,000 light years away. • Rotating neutron star, fantastic magnetic field. • Spectacular, but not lethally dangerous – well, except for astronauts maybe. ...
... • Across galaxy, maybe 50,000 light years away. • Rotating neutron star, fantastic magnetic field. • Spectacular, but not lethally dangerous – well, except for astronauts maybe. ...
16.6 NOTES How do astronomers measure distance? Objective
... distance light travels in one year (about 10 trillion km). Light from the Sun reaches Earth in a little more than 8 minutes. Light from the North Star (Polaris), reaches earth in about 700 years. Astronomers can use parallax to find out distances to the closer stars. Parallax is the apparent change ...
... distance light travels in one year (about 10 trillion km). Light from the Sun reaches Earth in a little more than 8 minutes. Light from the North Star (Polaris), reaches earth in about 700 years. Astronomers can use parallax to find out distances to the closer stars. Parallax is the apparent change ...
File
... Answer the following questions in your notebook. Write the complete question and write your answer in complete sentences. 4. Explain how astronomers measure the distance to nearby stars. 5. What are the main characteristics used to classify stars? 6. How would you classify the sun based on each of t ...
... Answer the following questions in your notebook. Write the complete question and write your answer in complete sentences. 4. Explain how astronomers measure the distance to nearby stars. 5. What are the main characteristics used to classify stars? 6. How would you classify the sun based on each of t ...
PHYS 1311: In Class Problems Chapter 5 Solutions Feb. 23, 2016
... center of mass of the Solar System. Likewise, the Sun orbits about the Solar System center of mass, but with a period nearly the same as the orbital period of Jupiter, 11.78 years. An observer in another star system could likely not detect any of our 8 planets due to the Sun’s overpowering luminosit ...
... center of mass of the Solar System. Likewise, the Sun orbits about the Solar System center of mass, but with a period nearly the same as the orbital period of Jupiter, 11.78 years. An observer in another star system could likely not detect any of our 8 planets due to the Sun’s overpowering luminosit ...
PS 224: Astronomy Fall 2014 Midterm (October 16, 2014)
... h. Images taken in X-ray are always displayed in false color. True. We cannot see X-ray photons with our eye. They have to be rendered in one of the visible colors for us to be able to see them. i. The more distance the stars, the smaller its parallax. True. Parallax is a measure of how much stars m ...
... h. Images taken in X-ray are always displayed in false color. True. We cannot see X-ray photons with our eye. They have to be rendered in one of the visible colors for us to be able to see them. i. The more distance the stars, the smaller its parallax. True. Parallax is a measure of how much stars m ...
Initial Evolution-The Main Sequence
... Two scenarios: stars with as mass less than 8 times the mass of the sun and stars with a mass greater than 8 times the mass of the sun. ...
... Two scenarios: stars with as mass less than 8 times the mass of the sun and stars with a mass greater than 8 times the mass of the sun. ...
Document
... will catch up with another and the force will no longer be directed towards the common centre of the circles. ...
... will catch up with another and the force will no longer be directed towards the common centre of the circles. ...
18.3 NOTES What is magnitude? Objective: Compare apparent
... Without a telescope, you can see about 2000 stars in the night sky. Some appear brighter than others. One way to measure a star’s brightness is by magnitude. The brightness of a star depends on its temperature, size, and distance from Earth. A hot star is usually brighter than a cool star. A large s ...
... Without a telescope, you can see about 2000 stars in the night sky. Some appear brighter than others. One way to measure a star’s brightness is by magnitude. The brightness of a star depends on its temperature, size, and distance from Earth. A hot star is usually brighter than a cool star. A large s ...
Chapter 5 Lesson 1: The Sun
... • An object in the solar system that produces heat and light is a _______________. • What causes energy to be released inside the sun? • How would earth be affected if the sun stopped producing energy? • Why are the planets not stars? • Why do you think it take millions of years for energy that move ...
... • An object in the solar system that produces heat and light is a _______________. • What causes energy to be released inside the sun? • How would earth be affected if the sun stopped producing energy? • Why are the planets not stars? • Why do you think it take millions of years for energy that move ...
Midterm - Department of Physics and Astronomy
... Apply this temperature to the issue of retention of an atmosphere. Can Titan retain Carbon Dioxide? ...
... Apply this temperature to the issue of retention of an atmosphere. Can Titan retain Carbon Dioxide? ...
Characteristics of Stars
... wire in a light bulb glow? Which color is hotter? Is Betelgeuse a cool or hot star? What color is Betelgeuse? What color is Rigel? Is Rigel a hot or cold star? 7. The brightness of a star depends on what two characteristics? What is a star’s apparent magnitude? What is absolute magnitude? What two t ...
... wire in a light bulb glow? Which color is hotter? Is Betelgeuse a cool or hot star? What color is Betelgeuse? What color is Rigel? Is Rigel a hot or cold star? 7. The brightness of a star depends on what two characteristics? What is a star’s apparent magnitude? What is absolute magnitude? What two t ...
Gemini South telescope makes the case for multiple Earth
... that the star is host to these Earth-sized planets depends on the star’s being a single object (i.e., not a binary, or twin, star). The Gemini data show no star companions to the primary “host” star, to within a distance that is less than that of Mercury from our Sun. Faint “M-class” stars such as T ...
... that the star is host to these Earth-sized planets depends on the star’s being a single object (i.e., not a binary, or twin, star). The Gemini data show no star companions to the primary “host” star, to within a distance that is less than that of Mercury from our Sun. Faint “M-class” stars such as T ...
Nuclear Reactions
... High temperatures are required to overcome the electrostatic repulsion between (positively charged) nuclei. (An element’s atomic number, Z, equals its nuclear charge.) Temperatures in excess of 10,000,000 °K are usually needed. These temperatures are attained only in the deep interior. So not all of ...
... High temperatures are required to overcome the electrostatic repulsion between (positively charged) nuclei. (An element’s atomic number, Z, equals its nuclear charge.) Temperatures in excess of 10,000,000 °K are usually needed. These temperatures are attained only in the deep interior. So not all of ...
Document
... • Large velocity pulsars. • v = 800 – 1000 km/s! Guitar Nebula – copyright J.M. Cordes ...
... • Large velocity pulsars. • v = 800 – 1000 km/s! Guitar Nebula – copyright J.M. Cordes ...
Our Universe
... “As Earth moves in its orbit around the sun, it changes position with respect to the stars; consequently, over time, people on Earth view the stars from slightly different positions. Astronomers calculate how these tiny variations in position correspond to the distance to a star.” ...
... “As Earth moves in its orbit around the sun, it changes position with respect to the stars; consequently, over time, people on Earth view the stars from slightly different positions. Astronomers calculate how these tiny variations in position correspond to the distance to a star.” ...
Constellations Jeopardy
... “Distances from the sun to the inner planets are like the distance from city hall to other businesses in town, while distances from the sun to the outer planets are like the distance between city hall and other distance cities within the state” is an example of this. C 500 ...
... “Distances from the sun to the inner planets are like the distance from city hall to other businesses in town, while distances from the sun to the outer planets are like the distance between city hall and other distance cities within the state” is an example of this. C 500 ...
IK Pegasi
IK Pegasi (or HR 8210) is a binary star system in the constellation Pegasus. It is just luminous enough to be seen with the unaided eye, at a distance of about 150 light years from the Solar System.The primary (IK Pegasi A) is an A-type main-sequence star that displays minor pulsations in luminosity. It is categorized as a Delta Scuti variable star and it has a periodic cycle of luminosity variation that repeats itself about 22.9 times per day. Its companion (IK Pegasi B) is a massive white dwarf—a star that has evolved past the main sequence and is no longer generating energy through nuclear fusion. They orbit each other every 21.7 days with an average separation of about 31 million kilometres, or 19 million miles, or 0.21 astronomical units (AU). This is smaller than the orbit of Mercury around the Sun.IK Pegasi B is the nearest known supernova progenitor candidate. When the primary begins to evolve into a red giant, it is expected to grow to a radius where the white dwarf can accrete matter from the expanded gaseous envelope. When the white dwarf approaches the Chandrasekhar limit of 1.44 solar masses (M☉), it may explode as a Type Ia supernova.