The Life Cycle of Spiral Arm Galaxies
... As a star goes supernova, it releases a great amount of energy (light) and also ejects a massive amount of matter (galactic cosmic rays), which are charged particles such as protons and pieces of ...
... As a star goes supernova, it releases a great amount of energy (light) and also ejects a massive amount of matter (galactic cosmic rays), which are charged particles such as protons and pieces of ...
Introduction to Basic Stargazing Part I - Naples Free-Net
... are hard to find nowadays, and certainly can’t be found near a city, but do the best that you can. Most astronomy clubs know of a spot that is as dark as regional conditions allow where they hold their star parties; join one. It’s good to have company in a lonely dark place! Several millennia ago, a ...
... are hard to find nowadays, and certainly can’t be found near a city, but do the best that you can. Most astronomy clubs know of a spot that is as dark as regional conditions allow where they hold their star parties; join one. It’s good to have company in a lonely dark place! Several millennia ago, a ...
PPT - El Camino College
... What are the surrounding layers made of? What can happen if they get hot enough? For Sun, this takes hundreds of millions of years. ...
... What are the surrounding layers made of? What can happen if they get hot enough? For Sun, this takes hundreds of millions of years. ...
Turbulence Layers - Facultad de Ciencias
... fundamental goal of astronomical observing techniques, which is to record the direction, wavelength, polarization state and arrival time for every incoming photon over the largest field of view. In fact using 3D spectroscopy, the wavelength and the incoming direction in a 2D field of view are record ...
... fundamental goal of astronomical observing techniques, which is to record the direction, wavelength, polarization state and arrival time for every incoming photon over the largest field of view. In fact using 3D spectroscopy, the wavelength and the incoming direction in a 2D field of view are record ...
May 2015 - Hermanus Astronomy
... slowly painted Mercury black over billions of years. On average, Mercury is much darker than its closest airless neighbour, the Moon. Airless bodies are known to be darkened by micrometeorite impacts and bombardment of solar wind, processes that create a thin coating of dark iron nanoparticles on th ...
... slowly painted Mercury black over billions of years. On average, Mercury is much darker than its closest airless neighbour, the Moon. Airless bodies are known to be darkened by micrometeorite impacts and bombardment of solar wind, processes that create a thin coating of dark iron nanoparticles on th ...
Chapter 2 History
... two thousand years earlier by Aristarchus. As before, the proposal failed to generate meaningful interest outside of a small circle of initiates. So little in fact that Copernicus postponed publication of his ideas literally to his dying day and, not to give offence, he dedicated his work to the pope ...
... two thousand years earlier by Aristarchus. As before, the proposal failed to generate meaningful interest outside of a small circle of initiates. So little in fact that Copernicus postponed publication of his ideas literally to his dying day and, not to give offence, he dedicated his work to the pope ...
Apparent magnitude
... Newly formed and young stars in the galactic plane in circular orbits (in one year ~1 M new stars) The metallicity of young stars increases Open star clusters, interstellar matter Also an “outer” disc of hydrogen (15 000 ly away) and a large disc of warm gas ( ~10 000K) ...
... Newly formed and young stars in the galactic plane in circular orbits (in one year ~1 M new stars) The metallicity of young stars increases Open star clusters, interstellar matter Also an “outer” disc of hydrogen (15 000 ly away) and a large disc of warm gas ( ~10 000K) ...
Astronomy 122 mid Term Exam
... However, one of these stars is a 10 solar mass main sequence star while its companion is a 1 solar mass white dwarf. Explain what is odd about this system and provide a plausible explanation for this apparently paradoxical observation (note that such real systems do exist in our Galaxy. It’s odd bec ...
... However, one of these stars is a 10 solar mass main sequence star while its companion is a 1 solar mass white dwarf. Explain what is odd about this system and provide a plausible explanation for this apparently paradoxical observation (note that such real systems do exist in our Galaxy. It’s odd bec ...
LESSON 8: STARS
... In composition and size, the Sun is an average star and is in the middle of its hydrogen-burning stage. It will continue to process hydrogen for another few billion years before swelling into a red giant. Although the Sun is an averagesized star, it is still huge by Earthly standards, having a diame ...
... In composition and size, the Sun is an average star and is in the middle of its hydrogen-burning stage. It will continue to process hydrogen for another few billion years before swelling into a red giant. Although the Sun is an averagesized star, it is still huge by Earthly standards, having a diame ...
E8B6_CRT_CR_MSTIPS_Final
... C. the Milky Way Galaxy is a barred-spiral galaxy which has several tentacle-like arms. D. dense regions of dust and gas block light from stars in portions of the Milky Way Galaxy. ...
... C. the Milky Way Galaxy is a barred-spiral galaxy which has several tentacle-like arms. D. dense regions of dust and gas block light from stars in portions of the Milky Way Galaxy. ...
G W ORIONIS, A 20000 YEARS OLD T TAURI STAR? 1\/"", _ 0.14
... The purpose of the present note is LO poi m out that G W Orionis, a T Tauri star, is also a ver y young object with an age comparable to that 01' Lhe Orion nebula ami LO the mean age 01' Lhe sLars at the vertices of comeLary nebulae. The reasoning underlying the case 01' G W Orionis -which is ver y ...
... The purpose of the present note is LO poi m out that G W Orionis, a T Tauri star, is also a ver y young object with an age comparable to that 01' Lhe Orion nebula ami LO the mean age 01' Lhe sLars at the vertices of comeLary nebulae. The reasoning underlying the case 01' G W Orionis -which is ver y ...
Pulsating variable stars and the Hertzsprung
... stars in different stages of their evolution. It is a plot showing a relationship between luminosity (or absolute magnitude) and stars' surface temperature (or spectral type). The bottom scale is ranging from high-temperature blue-white stars (left side of the diagram) to low-temperature red stars ( ...
... stars in different stages of their evolution. It is a plot showing a relationship between luminosity (or absolute magnitude) and stars' surface temperature (or spectral type). The bottom scale is ranging from high-temperature blue-white stars (left side of the diagram) to low-temperature red stars ( ...
Distances to the Stars in Leo
... Celsius). The light from a star can be analysed using a spectrum diagram on the next page: ...
... Celsius). The light from a star can be analysed using a spectrum diagram on the next page: ...
Lecture 15, PPT version
... Collapse starts to slow, but overshoots and outer layers of star are driven out into space (perhaps by “bounce” off the neutron core) in a massive explosion ...
... Collapse starts to slow, but overshoots and outer layers of star are driven out into space (perhaps by “bounce” off the neutron core) in a massive explosion ...
Distance Between Stars - cK-12
... focusing on your finger, close one eye and then the other. Alternate back and forth between eyes, and pay attention to how your finger appears to move. The shift in position of your finger is an example of parallax. Now try moving your finger closer to your eyes, and repeat the experiment. Do you no ...
... focusing on your finger, close one eye and then the other. Alternate back and forth between eyes, and pay attention to how your finger appears to move. The shift in position of your finger is an example of parallax. Now try moving your finger closer to your eyes, and repeat the experiment. Do you no ...
Planisphere
... 6. (Planisphere doesn't need to be set to Feb. 6 at 9pm for this.) Cygnus, Aquila, and Lyra each contain one very bright star. During the summer months, these three stars form the “Summer Triangle.” What are the names of these stars? 7. In the summer, you can use Cygnus to find the Milky Way. But Cy ...
... 6. (Planisphere doesn't need to be set to Feb. 6 at 9pm for this.) Cygnus, Aquila, and Lyra each contain one very bright star. During the summer months, these three stars form the “Summer Triangle.” What are the names of these stars? 7. In the summer, you can use Cygnus to find the Milky Way. But Cy ...
Document
... Peculiar stars such as post AGB stars and l Boo stars have iron abundances as low as [Fe/H] ~ –5. These are thought to be due to the separation of gas and dust beyond the stellar surface followed by an accretion of the dust-depleted gas. Thus the iron abundances are artifically low, but the Carbon, ...
... Peculiar stars such as post AGB stars and l Boo stars have iron abundances as low as [Fe/H] ~ –5. These are thought to be due to the separation of gas and dust beyond the stellar surface followed by an accretion of the dust-depleted gas. Thus the iron abundances are artifically low, but the Carbon, ...