poll_questions
... They are extremely cold They are blackbodies Their escape velocity exceeds light speed They are theoretical objects that have never been seen ...
... They are extremely cold They are blackbodies Their escape velocity exceeds light speed They are theoretical objects that have never been seen ...
cifutielu`s Astronomy Test 2014
... 8. Which variable will, within a few million years, expel its outer envelope as a planetary nebula and become a white dwarf? 9. Which variable is found mainly in globular clusters? ...
... 8. Which variable will, within a few million years, expel its outer envelope as a planetary nebula and become a white dwarf? 9. Which variable is found mainly in globular clusters? ...
mam.mwism
... The Interstellar Medium (ISM) The space between the stars is not completely empty, but filled with very dilute gas and dust, producing some of the most beautiful objects in the sky. We are interested in the ISM because a) dense interstellar clouds are the birth places of stars b) dark clouds alter ...
... The Interstellar Medium (ISM) The space between the stars is not completely empty, but filled with very dilute gas and dust, producing some of the most beautiful objects in the sky. We are interested in the ISM because a) dense interstellar clouds are the birth places of stars b) dark clouds alter ...
Hubble Deep Field Academy
... 2. Click on the arrow in the lower right. “The Universe: Estimating the number of objects in the entire universe” ____________ x ___________ = __________________ write the number in scientific notation: ___________________ 1. Why did you multiply by 30 million?_______________________________________ ...
... 2. Click on the arrow in the lower right. “The Universe: Estimating the number of objects in the entire universe” ____________ x ___________ = __________________ write the number in scientific notation: ___________________ 1. Why did you multiply by 30 million?_______________________________________ ...
www.astro.org.uk www.facebook.com/Stra ordAstro www.twi er.com
... Magellanic Cloud immediately reduces the inaccuracy in current measurements of cosmological distances. The astronomers worked out the distance to the Large Magellanic Cloud by observing rare close pairs of stars, known as eclipsing binaries . As these stars orbit each other they pass in front of eac ...
... Magellanic Cloud immediately reduces the inaccuracy in current measurements of cosmological distances. The astronomers worked out the distance to the Large Magellanic Cloud by observing rare close pairs of stars, known as eclipsing binaries . As these stars orbit each other they pass in front of eac ...
Physical Science Content Standards
... 3. Elements have distinct properties and atomic structure. All matter is comprised of one or more of over 100 elements. As a basis for understanding this concept, students know: a. the structure of the atom and how it is composed of protons, neutrons, and electrons. b. compounds are formed by combin ...
... 3. Elements have distinct properties and atomic structure. All matter is comprised of one or more of over 100 elements. As a basis for understanding this concept, students know: a. the structure of the atom and how it is composed of protons, neutrons, and electrons. b. compounds are formed by combin ...
The Hidden Lives of Galaxies NSTA 2001
... A stellar region is just a small portion of a galaxy. A galaxy is a massive collection of stars, gas, and dust held together by its own gravity. Galaxies can range in size from 6,000 to 350,000 lightyears across. Our own galaxy, the Milky Way, is about 105,000 light-years in diameter. The galaxy pi ...
... A stellar region is just a small portion of a galaxy. A galaxy is a massive collection of stars, gas, and dust held together by its own gravity. Galaxies can range in size from 6,000 to 350,000 lightyears across. Our own galaxy, the Milky Way, is about 105,000 light-years in diameter. The galaxy pi ...
telescopes and sites
... • Not all sources that exhibit continuous spectra are thermal, meaning that their temperature does not determine how their apparent brightness changes with wavelength. => non-thermal sources • The most important source of non-thermal radiation is synchrotron emission, which is emitted when very fast ...
... • Not all sources that exhibit continuous spectra are thermal, meaning that their temperature does not determine how their apparent brightness changes with wavelength. => non-thermal sources • The most important source of non-thermal radiation is synchrotron emission, which is emitted when very fast ...
ASTR 1050: Survey of Astronomy
... 25. A main sequence type A star has about twice the surface temperature of our sun (a type G star). Assuming the stars are about the same physical size (i.e., same radius), how much more luminous is the type A star? a. Twice as luminous. b. Four times as luminous. c. Eight times as luminous. d. Sixt ...
... 25. A main sequence type A star has about twice the surface temperature of our sun (a type G star). Assuming the stars are about the same physical size (i.e., same radius), how much more luminous is the type A star? a. Twice as luminous. b. Four times as luminous. c. Eight times as luminous. d. Sixt ...
P10263v1.2 Lab 8 Text
... The gas and dust itself has many interesting properties worth exploring. Photometry and spectroscopy of these clouds of gas and dust and varying wavelengths reveals properties such as mass, size, temperature, composition and motion. Often, the ...
... The gas and dust itself has many interesting properties worth exploring. Photometry and spectroscopy of these clouds of gas and dust and varying wavelengths reveals properties such as mass, size, temperature, composition and motion. Often, the ...
printer-friendly version of benchmark
... 3. Students incorrectly believe the closest stars are nearer to Earth than is the Sun. This mistaken belief stems both from visual misperception (the stars appear to be about as close to Earth as is the Moon and students know the Moon is closer than the Sun) as well as a vague understanding of the r ...
... 3. Students incorrectly believe the closest stars are nearer to Earth than is the Sun. This mistaken belief stems both from visual misperception (the stars appear to be about as close to Earth as is the Moon and students know the Moon is closer than the Sun) as well as a vague understanding of the r ...
lecture18
... Recall that the pressure inside a white dwarf (a hot ball of carbon) is mainly due to degenerate electrons – the unfriendly electrons that don’t like to get close to each other. When the mass of the white dwarf member of the binary grows to 1.4 solar masses (called the Chandrasekhar limit), the weig ...
... Recall that the pressure inside a white dwarf (a hot ball of carbon) is mainly due to degenerate electrons – the unfriendly electrons that don’t like to get close to each other. When the mass of the white dwarf member of the binary grows to 1.4 solar masses (called the Chandrasekhar limit), the weig ...
PPT
... • sky background and image saturation • attitude rate errors and sky scanning • on-board detection probability • on-ground location estimation (centroid to 0.001 pixel in hardest case) • error margin of 20 per cent included ...
... • sky background and image saturation • attitude rate errors and sky scanning • on-board detection probability • on-ground location estimation (centroid to 0.001 pixel in hardest case) • error margin of 20 per cent included ...
STEPHAN`S QUINTET
... Stephan's Quintet in the constellation Pegasus is al grouping of five galaxies of which four form the first compact galaxy group ever discovered. The group was discovered by Édouard Stephan in 1877 at Marseilles Observatory. These galaxies are of interest because of their violent collisions. Four of ...
... Stephan's Quintet in the constellation Pegasus is al grouping of five galaxies of which four form the first compact galaxy group ever discovered. The group was discovered by Édouard Stephan in 1877 at Marseilles Observatory. These galaxies are of interest because of their violent collisions. Four of ...
document
... Planetary nebula, NGC 2392 (The Eskimo Nebula) The word “nebula” refers to any cloud of interstellar gas and dust. Through small telescopes, these objects looked like the planets Uranus and Neptune, and so early astronomers called them “planetary” nebulae. Astronomers now know that they have nothin ...
... Planetary nebula, NGC 2392 (The Eskimo Nebula) The word “nebula” refers to any cloud of interstellar gas and dust. Through small telescopes, these objects looked like the planets Uranus and Neptune, and so early astronomers called them “planetary” nebulae. Astronomers now know that they have nothin ...
The Life Cycle of Spiral Arm Galaxies
... explode into supernovas, they leave behind the carcasses of black holes. This means that the central bar contains an extremely dense region of black holes. Fast spinning black holes produce strong ...
... explode into supernovas, they leave behind the carcasses of black holes. This means that the central bar contains an extremely dense region of black holes. Fast spinning black holes produce strong ...
Test 4 Review
... color in the name space of the scantron form. Write out and bubble your Banner ID in the ID space. • Draw simple sketches to help visualize problems • Solve numerical problems in the margin • Come up with your answer first, then look for it in the choices • If you can’t find the answer, try process ...
... color in the name space of the scantron form. Write out and bubble your Banner ID in the ID space. • Draw simple sketches to help visualize problems • Solve numerical problems in the margin • Come up with your answer first, then look for it in the choices • If you can’t find the answer, try process ...
Chapter 30 Review
... What method allows astronomers to locate the structures circled in the diagram? 1. recording radio waves 2. observing RR Lyrae variables 3. measuring infrared radiation 4. observing hydrogen emission spectra ...
... What method allows astronomers to locate the structures circled in the diagram? 1. recording radio waves 2. observing RR Lyrae variables 3. measuring infrared radiation 4. observing hydrogen emission spectra ...
Hubble`s Law and the Expansion Rate of the Universe
... our standard ruler. So, since we are working with spiral galaxies, we choose nearby galaxies such as Andromeda, Triangulum, Messier 81, and others to which we have found an accurate distance measure using variable stars or other reliable distance indicator. We find that, on average, the actual size ...
... our standard ruler. So, since we are working with spiral galaxies, we choose nearby galaxies such as Andromeda, Triangulum, Messier 81, and others to which we have found an accurate distance measure using variable stars or other reliable distance indicator. We find that, on average, the actual size ...
ISP 205: Visions of the Universe
... in the local Solar neighborhood… • at typical relative speeds of more than 70,000 km/hr. • but stars are so far away that we cannot easily notice ...
... in the local Solar neighborhood… • at typical relative speeds of more than 70,000 km/hr. • but stars are so far away that we cannot easily notice ...
Jeopardy
... It’s not possible to physically measure the long distances between stars . For these reasons, astronomers use a number of techniques to measure distances indirectly. Two such techniques have been used for thousands of years to determine distances on Earth: triangulation and parallax. ...
... It’s not possible to physically measure the long distances between stars . For these reasons, astronomers use a number of techniques to measure distances indirectly. Two such techniques have been used for thousands of years to determine distances on Earth: triangulation and parallax. ...
Quantum Well Electron Gain Structures and Infrared
... for life, then there is a limited volume of any stellar system where that might exist – the Habitable Zone • If we assume temperature is dominated by sun/starlight, then the HZ can be calculated for any given star • Likely star types for life are F, G, and K stars (bigger stars die fast; M stars hav ...
... for life, then there is a limited volume of any stellar system where that might exist – the Habitable Zone • If we assume temperature is dominated by sun/starlight, then the HZ can be calculated for any given star • Likely star types for life are F, G, and K stars (bigger stars die fast; M stars hav ...
Week 9A
... Galaxy mass measurements show that galaxies need between 3 and 10 times more mass than can ...
... Galaxy mass measurements show that galaxies need between 3 and 10 times more mass than can ...
High velocity clouds (v > 90 km/s), up to 108 M_sun in total Seen at
... HI profile caused by several, distinct clouds along line of sight.! ...
... HI profile caused by several, distinct clouds along line of sight.! ...
Astronomy Rough Notes
... Picture/rank the size of the following objects: our Moon, Earth, Sun (or a star), our solar system, the Milky Way galaxy (our galaxy), the universe. Picture/rank the distances to the following objects: our Moon, Earth, Sun (or a star), our solar system, the Milky Way galaxy (our galaxy), the Androme ...
... Picture/rank the size of the following objects: our Moon, Earth, Sun (or a star), our solar system, the Milky Way galaxy (our galaxy), the universe. Picture/rank the distances to the following objects: our Moon, Earth, Sun (or a star), our solar system, the Milky Way galaxy (our galaxy), the Androme ...
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are ""close enough"" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances and methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung.