1. Star A has a distance of 3 parsecs. What is its parallax angle? 1a
... c) because its the hottest and hence brightest and hence most luminous. What do all the stars in question 13) have in common? They all lie on the main sequence and hence are burning hydrogen to helium on the main sequence. Star X has its radius increased by a factor of 3 and its temperature increase ...
... c) because its the hottest and hence brightest and hence most luminous. What do all the stars in question 13) have in common? They all lie on the main sequence and hence are burning hydrogen to helium on the main sequence. Star X has its radius increased by a factor of 3 and its temperature increase ...
chapter 17 measuring the stars
... (including the Sun itself) ~The color of any 24, 000 K object glows white o White Dwarf: A dwarf star with sufficiently high surface temperature that it glows white ...
... (including the Sun itself) ~The color of any 24, 000 K object glows white o White Dwarf: A dwarf star with sufficiently high surface temperature that it glows white ...
Ordinary Stars - Edgewood High School
... of 10,000 K and another a temperature of 5,000 K, how much more energy does the hotter star put out? ...
... of 10,000 K and another a temperature of 5,000 K, how much more energy does the hotter star put out? ...
Test 2, Nov. 17, 2015 - Physics@Brock
... (a) star S has hotter surface than star U. (b) star S has colder surface than star U. (c) both stars have the same surface temperature. (d) [No comparison of their surface temperatures can be made.] 16. A photon can be absorbed by an atom only if the photon energy is equal to the energy difference o ...
... (a) star S has hotter surface than star U. (b) star S has colder surface than star U. (c) both stars have the same surface temperature. (d) [No comparison of their surface temperatures can be made.] 16. A photon can be absorbed by an atom only if the photon energy is equal to the energy difference o ...
1 Ay 124 Winter 2014 – HOMEWORK #2 Problem 1
... Due Friday, Jan 31, 2014 by 5pm, in Steidel’s mailbox in 249 Cahill ...
... Due Friday, Jan 31, 2014 by 5pm, in Steidel’s mailbox in 249 Cahill ...
Morning Announcements
... The reason is that there is a connection between temperature and total energy output, which is described by the Stefan-Boltzmann law. There are two important aspects to remember: • The total amount of light energy that a star emits — called the luminosity (L), and measured by the absolute magnitude ...
... The reason is that there is a connection between temperature and total energy output, which is described by the Stefan-Boltzmann law. There are two important aspects to remember: • The total amount of light energy that a star emits — called the luminosity (L), and measured by the absolute magnitude ...
galaxy
... The most distant galaxies ever photographed are as far as 10 billion to 13 billion light-years away. Large galaxies have more than a trillion stars. Only three galaxies outside the Milky Way are visible with the unaided eye. People in the Northern Hemisphere can see the Andromeda Galaxy, which is ab ...
... The most distant galaxies ever photographed are as far as 10 billion to 13 billion light-years away. Large galaxies have more than a trillion stars. Only three galaxies outside the Milky Way are visible with the unaided eye. People in the Northern Hemisphere can see the Andromeda Galaxy, which is ab ...
Phys133-Sample MT2
... 6) No stars have been found with masses greater than 200-300 times our Sun because A) they would fragment into binary stars because of their rapid rotation. B) they would generate so much power that they would blow themselves apart. C) they are not bright enough to be seen nearby. D) molecular cloud ...
... 6) No stars have been found with masses greater than 200-300 times our Sun because A) they would fragment into binary stars because of their rapid rotation. B) they would generate so much power that they would blow themselves apart. C) they are not bright enough to be seen nearby. D) molecular cloud ...
Stars and Galaxies
... Many stars are found in multiple-star systems. Alpha Centauri is in a multiple star system. It is made up of three stars called a triple star system. Over half of the stars in the sky have at least one companion star. Most of these stars are double-star systems in which two stars revolve around e ...
... Many stars are found in multiple-star systems. Alpha Centauri is in a multiple star system. It is made up of three stars called a triple star system. Over half of the stars in the sky have at least one companion star. Most of these stars are double-star systems in which two stars revolve around e ...
lecture12
... A classification of the stellar black body For historical reasons, astronomers classify the temperatures of stars on a scale defined by spectral types, called O B A F G K M, ranging from the hottest (type O) to the coolest (type M) stars. ...
... A classification of the stellar black body For historical reasons, astronomers classify the temperatures of stars on a scale defined by spectral types, called O B A F G K M, ranging from the hottest (type O) to the coolest (type M) stars. ...
Document
... The change in position of an object with respect to a distant background is called parallax. As Earth moves in its orbit, astronomers are able to observe stars from two different positions. Astronomers measure the parallax of nearby stars to determine their distance from Earth ...
... The change in position of an object with respect to a distant background is called parallax. As Earth moves in its orbit, astronomers are able to observe stars from two different positions. Astronomers measure the parallax of nearby stars to determine their distance from Earth ...
Powerpoint Presentation (large file)
... generation of Population II stars, then ejected into space and incorporated into a later stellar generation ...
... generation of Population II stars, then ejected into space and incorporated into a later stellar generation ...
Consider Average Stars
... Look to the western horizon, with the sun still up in the sky. Then move your cursor to the time display at the top left, and advance the minutes quickly by holding down the arrow key on your keyboard. This makes the sun set rapidly – and you can watch the stars come out! ...
... Look to the western horizon, with the sun still up in the sky. Then move your cursor to the time display at the top left, and advance the minutes quickly by holding down the arrow key on your keyboard. This makes the sun set rapidly – and you can watch the stars come out! ...
Stars and Galaxies
... 76. Solar flares increase ____________________ activity in both hemispheres. 77. The Aurora Borealis is in the _________________ hemisphere; Aurora Australis is in the _________________ hemisphere 78. Most stars are in systems where 2 or more stars orbit one another; his is a ___________________ sys ...
... 76. Solar flares increase ____________________ activity in both hemispheres. 77. The Aurora Borealis is in the _________________ hemisphere; Aurora Australis is in the _________________ hemisphere 78. Most stars are in systems where 2 or more stars orbit one another; his is a ___________________ sys ...
SAMPLE TEST: Stars and Galaxies Multiple Choice Identify the letter
... 48. A light-year is the distance ____________________ travels in a year. 49. Apparent magnitude refers to a star’s ____________________ as it appears from ____________________. 50. Some stars, called ____________________, get brighter and fainter in a regular pattern. 51. A(n) ____________________ i ...
... 48. A light-year is the distance ____________________ travels in a year. 49. Apparent magnitude refers to a star’s ____________________ as it appears from ____________________. 50. Some stars, called ____________________, get brighter and fainter in a regular pattern. 51. A(n) ____________________ i ...
Star project
... have their own gravity and have a fixed position in space. • They are extremely burning hot. • The nearest star to us is the sun. • They are made up of mainly hydrogen and helium, but have a little bit of other elements like oxygen and carbon as well. ...
... have their own gravity and have a fixed position in space. • They are extremely burning hot. • The nearest star to us is the sun. • They are made up of mainly hydrogen and helium, but have a little bit of other elements like oxygen and carbon as well. ...
122final10
... 19. Coolest star ___________ 20. Hottest star ____________ 21. Strongest hydrogen absorption lines in its spectrum __________ 22. Only detectable in binary systems _________ 23. Unstable fusion ___________ 24. Plate tectonics on the Earth _______ 25. Fused in core of a red giant ________ 26. Soon to ...
... 19. Coolest star ___________ 20. Hottest star ____________ 21. Strongest hydrogen absorption lines in its spectrum __________ 22. Only detectable in binary systems _________ 23. Unstable fusion ___________ 24. Plate tectonics on the Earth _______ 25. Fused in core of a red giant ________ 26. Soon to ...
Document
... c) objects that are not quite massive enough to be stars d) cooled off white dwarfs e) the objects at the centers of planetary nebulae 29. What is not the same for each star in a cluster? a) age, b) mass, c) composition, d) distance from Earth 30. Nearly all the elements found in our environment wer ...
... c) objects that are not quite massive enough to be stars d) cooled off white dwarfs e) the objects at the centers of planetary nebulae 29. What is not the same for each star in a cluster? a) age, b) mass, c) composition, d) distance from Earth 30. Nearly all the elements found in our environment wer ...