Ch. 4 review
... The heavy elements in the solar system were formed in an earlier generation of stars The early Universe contained only hydrogen, helium, and traces of lithium. All heavier elements were created in the core of stars as they “burned” the hydrogen and helium into carbon, oxygen, neon, calcium, magnesiu ...
... The heavy elements in the solar system were formed in an earlier generation of stars The early Universe contained only hydrogen, helium, and traces of lithium. All heavier elements were created in the core of stars as they “burned” the hydrogen and helium into carbon, oxygen, neon, calcium, magnesiu ...
The Hertzsprung – Russell Diagram Star Data Table
... a star’s absolute magnitude versus its temperature is called an HR Diagram . The HR Diagram allows astronomers to study how stars, including our sun, change over time. ...
... a star’s absolute magnitude versus its temperature is called an HR Diagram . The HR Diagram allows astronomers to study how stars, including our sun, change over time. ...
Heart of darkness: The cluster Abell 545 and its “star pile”
... at the center of a massive cluster. As an old and metal rich population, its origin is probably connected to stripping and/or disruption of dwarf (giant) galaxies passing through the clusters' center. It is an unrivaled object to test dark matter theories in cluster scales. ...
... at the center of a massive cluster. As an old and metal rich population, its origin is probably connected to stripping and/or disruption of dwarf (giant) galaxies passing through the clusters' center. It is an unrivaled object to test dark matter theories in cluster scales. ...
The MGC - St Andrews Astronomy Group
... – The Space Density of Galaxies Locally (M*, a, f*) • The Characteristic Luminosity • The Faint-end slope a j (M ) =Normalisation 0.9 ln 2.5j (*)10 ...
... – The Space Density of Galaxies Locally (M*, a, f*) • The Characteristic Luminosity • The Faint-end slope a j (M ) =Normalisation 0.9 ln 2.5j (*)10 ...
Intro to Earth science
... • Our Solar System is located in the Milky Way Galaxy • Galaxy - a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space ...
... • Our Solar System is located in the Milky Way Galaxy • Galaxy - a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space ...
Chapter 12 Worksheet
... b. neither the position nor the momentum can be measured precisely c. the position and the momentum of a particle can be measured precisely, but not at the same time d. the positon of a particle cannot be measured precisely 4. From the following list of observations, choose the one that most clearly ...
... b. neither the position nor the momentum can be measured precisely c. the position and the momentum of a particle can be measured precisely, but not at the same time d. the positon of a particle cannot be measured precisely 4. From the following list of observations, choose the one that most clearly ...
PowerPoint File
... In post-Main-Sequence evolution, what you see on the surface is not a good indicator of what is happening deep in the interior ...
... In post-Main-Sequence evolution, what you see on the surface is not a good indicator of what is happening deep in the interior ...
ASTRO OTTER (for secondary students)
... time 6:15 The differences between solar and lunar eclipses are clearly explained. Students see why we do not have a lunar eclipse every full moon and why solar eclipses occur only during a new moon. Partial, total and annular eclipses are explained. ...
... time 6:15 The differences between solar and lunar eclipses are clearly explained. Students see why we do not have a lunar eclipse every full moon and why solar eclipses occur only during a new moon. Partial, total and annular eclipses are explained. ...
Final Exam from 2005
... 23. The distances of nearer stars may be measured by observing their apparent motion as a. the Earth orbits around the Sun. b. the Earth rotates on its axis. c. the Sun orbits around the center of the Galaxy. d. the planets cross their path. 24. If two intrinsically identical stars are at different ...
... 23. The distances of nearer stars may be measured by observing their apparent motion as a. the Earth orbits around the Sun. b. the Earth rotates on its axis. c. the Sun orbits around the center of the Galaxy. d. the planets cross their path. 24. If two intrinsically identical stars are at different ...
n - Ira-Inaf
... and molecular gas. denser clouds < 0.5% of space low density HI/H2 is in cold, mixed with other molecules (CO, HCN,NH3, H2O, CH3OH...) These regions may appear dark/luminous, depending on the observing wavelength (radio to the Xrays), physical condition (SFR, SN ...
... and molecular gas. denser clouds < 0.5% of space low density HI/H2 is in cold, mixed with other molecules (CO, HCN,NH3, H2O, CH3OH...) These regions may appear dark/luminous, depending on the observing wavelength (radio to the Xrays), physical condition (SFR, SN ...
bYTEBoss lesson 3 life of star
... The end of the life cycle of really massive stars is different to that of massive stars. After a really massive red giant collapses in a supernova explosion, it leaves a star so dense that not even light can escape its gravitational pull. This is called a black hole! Some scientists believe that the ...
... The end of the life cycle of really massive stars is different to that of massive stars. After a really massive red giant collapses in a supernova explosion, it leaves a star so dense that not even light can escape its gravitational pull. This is called a black hole! Some scientists believe that the ...
Stellar populations and dynamics in the Milky Way galaxy
... radiative de-excitation. Clearly, particles with small crosssection per unit mass for collisions, such as stars, will not dissipate their random kinetic energy efficiently, so that dissipation must occur prior to star formation, while the galaxy is still gaseous. The virial temperature of a typical ...
... radiative de-excitation. Clearly, particles with small crosssection per unit mass for collisions, such as stars, will not dissipate their random kinetic energy efficiently, so that dissipation must occur prior to star formation, while the galaxy is still gaseous. The virial temperature of a typical ...
Atomic Structure Review Part 1
... _____________12. Find the wavelength in nanometers of light whose frequency is 7.00 x 1016 Hz. _____________13. Is the light in # 12 visible? _____________14. How many Joules of energy are there in one photon of yellow light whose wavelength is 630 nm? _____________15. Find the color of light whose ...
... _____________12. Find the wavelength in nanometers of light whose frequency is 7.00 x 1016 Hz. _____________13. Is the light in # 12 visible? _____________14. How many Joules of energy are there in one photon of yellow light whose wavelength is 630 nm? _____________15. Find the color of light whose ...
Atomic Structure
... dental radiographs while the patient listens to a radio station (l = 325 cm) and looks out the window at the blue sky (l= 473 nm). What is the frequency (in s-1) of the electromagnetic radiation from each source? (Assume that the radiation travels at the speed of light, 3.00x108 m/s.) ...
... dental radiographs while the patient listens to a radio station (l = 325 cm) and looks out the window at the blue sky (l= 473 nm). What is the frequency (in s-1) of the electromagnetic radiation from each source? (Assume that the radiation travels at the speed of light, 3.00x108 m/s.) ...
Life and fate of a star
... became so high that the nuclear aims at achieving controlled nuclear fusion for the first time. Its completion fusion reactions started. But is expected around 2027 these reactions slowly drain the available hydrogen reservoir. In ● At the end of the red giant phase of the Sun, nuclear fusion reacti ...
... became so high that the nuclear aims at achieving controlled nuclear fusion for the first time. Its completion fusion reactions started. But is expected around 2027 these reactions slowly drain the available hydrogen reservoir. In ● At the end of the red giant phase of the Sun, nuclear fusion reacti ...
Part 2: Solar System Formation
... • Our Milky Way Galaxy is filled with cold, dark clouds of gas and dust. • These clouds are mostly hydrogen and helium with dust containing mostly iron, rock, and ice. • The Solar System is thought to have formed from a huge, slowly rotating cloud about 4.5 billion years ago • A nearby passing star ...
... • Our Milky Way Galaxy is filled with cold, dark clouds of gas and dust. • These clouds are mostly hydrogen and helium with dust containing mostly iron, rock, and ice. • The Solar System is thought to have formed from a huge, slowly rotating cloud about 4.5 billion years ago • A nearby passing star ...
Lecture 1
... Observational astronomers refer to any massive component too dim to be detected (stellar remnants such as white dwarfs, neutron stars, and black holes) as dark matter. A more stringent definition is any massive component of the universe which doesn’t emit, absorb, or scatter light at all. The usual ...
... Observational astronomers refer to any massive component too dim to be detected (stellar remnants such as white dwarfs, neutron stars, and black holes) as dark matter. A more stringent definition is any massive component of the universe which doesn’t emit, absorb, or scatter light at all. The usual ...
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.