Observing the Sky
... 4) You are observing the sky from your southern hemisphere location in Australia. You see a star rising directly to the east. When this star reaches its highest position above the horizon, where will it be? a) high in the northern sky b) high in the eastern sky c) high in the southern sky d) high i ...
... 4) You are observing the sky from your southern hemisphere location in Australia. You see a star rising directly to the east. When this star reaches its highest position above the horizon, where will it be? a) high in the northern sky b) high in the eastern sky c) high in the southern sky d) high i ...
HW #02 Solutions
... 11. Some stars have temperatures of only 3000 K but have over 100X more luminosity than the Sun. How is this possible? The luminosity of a star depends on two factors; its temperature and its surface area. This is summarized in the Stefan-Boltzmann Law L 4R 2 T 4 . Thus a cool star can have a ...
... 11. Some stars have temperatures of only 3000 K but have over 100X more luminosity than the Sun. How is this possible? The luminosity of a star depends on two factors; its temperature and its surface area. This is summarized in the Stefan-Boltzmann Law L 4R 2 T 4 . Thus a cool star can have a ...
Chapter 6: Stellar Evolution (part 2)
... Mass loss plays an essential role in regulating the evolution of very massive stars. I ...
... Mass loss plays an essential role in regulating the evolution of very massive stars. I ...
Critical angle - Kelso High School
... 6. Draw a diagram of a light wave being refracted, going from air into glass. Mark on the normal, the incident and refracted angles. 7. Draw a diagram showing reflection. Mark the normal and the angles of incidence and reflection. 8. What is total internal reflection? Draw an optical fibre showing ...
... 6. Draw a diagram of a light wave being refracted, going from air into glass. Mark on the normal, the incident and refracted angles. 7. Draw a diagram showing reflection. Mark the normal and the angles of incidence and reflection. 8. What is total internal reflection? Draw an optical fibre showing ...
KINEMATIC MEASUREMENTS OF GAS AND STARS IN SPIRAL
... termed a bulge from photometric arguments ([7]). Since a stellar population or even a gas component, is supported against gravitational collapse by a combination of its axial rotation (circular motion) and its pressure (radial motion) we would expect to see zones with enhanced velocity dispersion ha ...
... termed a bulge from photometric arguments ([7]). Since a stellar population or even a gas component, is supported against gravitational collapse by a combination of its axial rotation (circular motion) and its pressure (radial motion) we would expect to see zones with enhanced velocity dispersion ha ...
The Evening Sky Map
... Double Star – Two stars that appear close to each other in the sky; either linked by gravity so that they orbit each other (binary star) or lying at different distances from Earth (optical double). Apparent separation of stars is given in seconds of arc ("). Ecliptic – The path of the Sun’s center o ...
... Double Star – Two stars that appear close to each other in the sky; either linked by gravity so that they orbit each other (binary star) or lying at different distances from Earth (optical double). Apparent separation of stars is given in seconds of arc ("). Ecliptic – The path of the Sun’s center o ...
Soft Gamma-ray Pulsars
... The outer gap model predicts that most pairs created inside the gap are around the null charge surface, and the electric field separates the opposite charges to move in opposite directions (Cheng, Ho & Ruderman, 1986). Consequently, the region from the null charge surface to the light cylinder is do ...
... The outer gap model predicts that most pairs created inside the gap are around the null charge surface, and the electric field separates the opposite charges to move in opposite directions (Cheng, Ho & Ruderman, 1986). Consequently, the region from the null charge surface to the light cylinder is do ...
Astrophysics - Cathkin High School
... Most of the difference has been accounted for. The remaining 0.018 m s-2 is due to the nonspherical shape of the Earth. The equatorial radius exceeds the polar radius by 21 km. This flattening at the poles has been caused by the centrifuge effect on the liquid Earth as it cools. The Earth is 4600 mi ...
... Most of the difference has been accounted for. The remaining 0.018 m s-2 is due to the nonspherical shape of the Earth. The equatorial radius exceeds the polar radius by 21 km. This flattening at the poles has been caused by the centrifuge effect on the liquid Earth as it cools. The Earth is 4600 mi ...
The High Resolution Camera CXC Newsletter
... search for time variability of the sources, we included 23 observations from November 1999 to February 2005 (adding about 250 ks exposure time). We detected 318 X-ray sources and created long term light curves for all of them. We classified sources as highly variable or outbursting (with subclasses ...
... search for time variability of the sources, we included 23 observations from November 1999 to February 2005 (adding about 250 ks exposure time). We detected 318 X-ray sources and created long term light curves for all of them. We classified sources as highly variable or outbursting (with subclasses ...
When Will Mankind Achieve “First Contact” with Extraterrestrial Life
... the exciting pictures and other data/information that our incredibly fast unmanned inter-stellar rocket ships will beam back to us sometime in the far distant future. This would, of course, assume that the speed of light is our ultimate speed barrier, or that nothing like “worm holes” or other fancy ...
... the exciting pictures and other data/information that our incredibly fast unmanned inter-stellar rocket ships will beam back to us sometime in the far distant future. This would, of course, assume that the speed of light is our ultimate speed barrier, or that nothing like “worm holes” or other fancy ...
supplemental educational materials PDF
... A scientist who studies the universe and the celestial bodies residing in it, including their composition, history, location, and motion. Many of the scientists at the Space Telescope Science Institute are astronomers. Astronomers from all over the world use the Hubble Space Telescope. ...
... A scientist who studies the universe and the celestial bodies residing in it, including their composition, history, location, and motion. Many of the scientists at the Space Telescope Science Institute are astronomers. Astronomers from all over the world use the Hubble Space Telescope. ...
Evolution of the Highest Redshift Quasars
... – How closely tied are the earliest SBHs and galaxies? Or are we just picking up early starters in term of BH accretion in the most luminous quasars? ...
... – How closely tied are the earliest SBHs and galaxies? Or are we just picking up early starters in term of BH accretion in the most luminous quasars? ...
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
... (d) After the collapse has stopped, calculate the time required for a mass element at 100 AU to make one complete revolution around the center of the protostar. Compare this time to the orbital period at 100 AU expected from Kepler’s third law. Why would you not expect the two periods to be identica ...
... (d) After the collapse has stopped, calculate the time required for a mass element at 100 AU to make one complete revolution around the center of the protostar. Compare this time to the orbital period at 100 AU expected from Kepler’s third law. Why would you not expect the two periods to be identica ...
Stars - cayugascience
... more massive stars do. Low mass stars burn so slowly that they can last for 100 billion years — more than eight times the current life span of the universe. With less gravity and lower pressures than other stars, the nuclear reactions in the core of low mass stars happen at a relatively slow rate. T ...
... more massive stars do. Low mass stars burn so slowly that they can last for 100 billion years — more than eight times the current life span of the universe. With less gravity and lower pressures than other stars, the nuclear reactions in the core of low mass stars happen at a relatively slow rate. T ...
Parallel Programs
... Then the state of the variables is updated, based on this solution. Then the equations of motion are solved for the next time-step. Each time-step consists of several computational phases. • Values are set up. • A system of equations is solved. All phases sweep through all points of the arrays and m ...
... Then the state of the variables is updated, based on this solution. Then the equations of motion are solved for the next time-step. Each time-step consists of several computational phases. • Values are set up. • A system of equations is solved. All phases sweep through all points of the arrays and m ...
Chem 4631 - UNT Chemistry
... When radiation passes through a solid, liquid or gas, certain frequencies may be selectively removed. Absorption – process in which electromagnetic energy is transferred to the atoms, ion, or molecules of the sample. Absorption promotes these particles from ground state to one or more higher excited ...
... When radiation passes through a solid, liquid or gas, certain frequencies may be selectively removed. Absorption – process in which electromagnetic energy is transferred to the atoms, ion, or molecules of the sample. Absorption promotes these particles from ground state to one or more higher excited ...
Exploring and Observing the Sun and Stars
... Science Kindergarten Unit 06 Exemplar Lesson 03: Exploring and Observing the Sun and Stars This lesson is one approach to teaching the State Standards associated with this unit. Districts are encouraged to customize this lesson by supplementing with district-approved resources, materials, and activi ...
... Science Kindergarten Unit 06 Exemplar Lesson 03: Exploring and Observing the Sun and Stars This lesson is one approach to teaching the State Standards associated with this unit. Districts are encouraged to customize this lesson by supplementing with district-approved resources, materials, and activi ...
Paper
... Yukio Sakurai, a Japanese amateur astronomer, was looking for comets when he noticed an object in the constellation Sagittarius. At first, Yukio Sakurai reported the object to be a nova, but a closer look at its size revealed that it was a giant star that had been born again. It has been reported th ...
... Yukio Sakurai, a Japanese amateur astronomer, was looking for comets when he noticed an object in the constellation Sagittarius. At first, Yukio Sakurai reported the object to be a nova, but a closer look at its size revealed that it was a giant star that had been born again. It has been reported th ...
CHAPTER 3 Optical Components of Spectrometers
... • Velocity of all electromagnetic waves in free space, c, depends upon the electric permittivity,and permeability, , of free space • Thus, c= 3 x 108 m s-1. • absolute index of refraction, The ratio of the speed of an electromagnetic wave in vacuum to that in matter ...
... • Velocity of all electromagnetic waves in free space, c, depends upon the electric permittivity,and permeability, , of free space • Thus, c= 3 x 108 m s-1. • absolute index of refraction, The ratio of the speed of an electromagnetic wave in vacuum to that in matter ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.