The Great Debate - The Story Behind The Science
... The significance of this rotational period requires understanding Shapley's size of the Milky Way. Shapley had been a supporter of the island universe idea until he determined the Milky Way to be 300,000 light-years in diameter (10x larger than the consensus estimate). He concluded this by measuring ...
... The significance of this rotational period requires understanding Shapley's size of the Milky Way. Shapley had been a supporter of the island universe idea until he determined the Milky Way to be 300,000 light-years in diameter (10x larger than the consensus estimate). He concluded this by measuring ...
The Odin satellite`s sharp eyes in space
... substances distribute themselves in the atmosphere. This will provide aeronomers – atmospheric scientists – with new knowledge about things like ozone breakdown near the poles and about the mysterious night luminous clouds that can sometimes be seen in the summer at northern latitudes. The satellite ...
... substances distribute themselves in the atmosphere. This will provide aeronomers – atmospheric scientists – with new knowledge about things like ozone breakdown near the poles and about the mysterious night luminous clouds that can sometimes be seen in the summer at northern latitudes. The satellite ...
Lecture 9
... more erratic. The triple-alpha process rate scales with T30(!). AGB stars undergo `Shell flashes’. ...
... more erratic. The triple-alpha process rate scales with T30(!). AGB stars undergo `Shell flashes’. ...
Advanced STARS - WordPress.com
... A: A fixed star (from the Latin stellae fixae) is any celestial object that does not seem to move in relation to the other stars of the night sky. Hence, a fixed star is any star except for the Sun. A nebula or other star-like object may also be called a fixed star.. ...
... A: A fixed star (from the Latin stellae fixae) is any celestial object that does not seem to move in relation to the other stars of the night sky. Hence, a fixed star is any star except for the Sun. A nebula or other star-like object may also be called a fixed star.. ...
Section 2 Movements of the Earth
... infrared radiation from objects in space after it is launched in 2011. ...
... infrared radiation from objects in space after it is launched in 2011. ...
ASTRONOMY
... They will be looking for planets in other solar systems that are in the Goldilocks Zone. It is an area which is not too hot or too cold to support life. The raw materials for life are common, and water is probably the most common molecule in the universe. Organic molecules are already known to be co ...
... They will be looking for planets in other solar systems that are in the Goldilocks Zone. It is an area which is not too hot or too cold to support life. The raw materials for life are common, and water is probably the most common molecule in the universe. Organic molecules are already known to be co ...
Lec 11 Galileo I Tel..
... Venus complete circle = farthest; crescent = closest & largest Mars should be 60 times as large in one as in another Thus: naked eye observations do not confirm Copernicanism Galileo says Copernicus was wise to maintain his view despite the disconfirming observations Galileo’s line of argu ...
... Venus complete circle = farthest; crescent = closest & largest Mars should be 60 times as large in one as in another Thus: naked eye observations do not confirm Copernicanism Galileo says Copernicus was wise to maintain his view despite the disconfirming observations Galileo’s line of argu ...
The Milky Way
... that has been ionized by young, massive, hot stars. Their light is highly red-shifted because especially the star-forming regions are moving away from us at high speed. This is the red color of interstellar dust that is present in the molecular clouds out of which stars are formed. Star forming regi ...
... that has been ionized by young, massive, hot stars. Their light is highly red-shifted because especially the star-forming regions are moving away from us at high speed. This is the red color of interstellar dust that is present in the molecular clouds out of which stars are formed. Star forming regi ...
The WSO, a world-class observatory for the ultraviolet
... to 300nm, to modern astronomy. Of particular importance has been access to high resolution R~40,000-100,000 echelle spectra providing an ability to study the dynamics of hot plasma and separate multiple stellar and interstellar absorption components. However, there are a few emerging problems with t ...
... to 300nm, to modern astronomy. Of particular importance has been access to high resolution R~40,000-100,000 echelle spectra providing an ability to study the dynamics of hot plasma and separate multiple stellar and interstellar absorption components. However, there are a few emerging problems with t ...
Highlights of the Poster Session - Indico
... the universe since the Big Bang. They are flashes of gamma rays coming from seemingly random places in deep space at random times. GRBs last from milliseconds to minutes, often followed by an afterglow emission at longer wavelengths (X-ray, UV, optical, IR, and radio). Gamma-ray bursts are detected ...
... the universe since the Big Bang. They are flashes of gamma rays coming from seemingly random places in deep space at random times. GRBs last from milliseconds to minutes, often followed by an afterglow emission at longer wavelengths (X-ray, UV, optical, IR, and radio). Gamma-ray bursts are detected ...
Terrestrial Planets
... members of the system, eventually grinding a significant amount of material into dust grains distributed in a so-called debris disk. Because the grains have larger surface area per unit mass compared to larger bodies, they (re)radiate more energy and therefore are more easily detected in the infrare ...
... members of the system, eventually grinding a significant amount of material into dust grains distributed in a so-called debris disk. Because the grains have larger surface area per unit mass compared to larger bodies, they (re)radiate more energy and therefore are more easily detected in the infrare ...
DOBSONIAN TELESCOPE
... When viewing through the telescope, the image will appear to be upside-down and inverted. This is normal and is a result of the optical system design. It can be corrected by using an erecting prism when viewing, but it is not necessary to do so. Using your finderscope will help you locate celestial ...
... When viewing through the telescope, the image will appear to be upside-down and inverted. This is normal and is a result of the optical system design. It can be corrected by using an erecting prism when viewing, but it is not necessary to do so. Using your finderscope will help you locate celestial ...
Word - Lyon College
... is something that's intermediate between a true terrestrial planet like the Earth and a hot version of the ice giants Uranus and Neptune." A paper detailing the team's results has been submitted to The Astrophysical Journal. Coauthors on the paper are Steven Vogt and Gregory Laughlin of the Lick Obs ...
... is something that's intermediate between a true terrestrial planet like the Earth and a hot version of the ice giants Uranus and Neptune." A paper detailing the team's results has been submitted to The Astrophysical Journal. Coauthors on the paper are Steven Vogt and Gregory Laughlin of the Lick Obs ...
class slides for Chapter 3
... Much can be learned from observing the same astronomical object at many wavelengths. Here, the Milky Way. © 2013 Pearson Education, Inc. ...
... Much can be learned from observing the same astronomical object at many wavelengths. Here, the Milky Way. © 2013 Pearson Education, Inc. ...
Standing in Awe - Auckland Astronomical Society
... Libra lies prominently in the June sky, preceding the Scorpion across the sky. At 538° square in size, Libra is one of the larger constellations, though its stars are poorly shown, the brightest attaining magnitude 2.6. In fact, Libra is one of the poorer adorned constellations, there being only 2.4 ...
... Libra lies prominently in the June sky, preceding the Scorpion across the sky. At 538° square in size, Libra is one of the larger constellations, though its stars are poorly shown, the brightest attaining magnitude 2.6. In fact, Libra is one of the poorer adorned constellations, there being only 2.4 ...
Chapter 15
... the hydrogen fuel in its core to make helium. The helium is basically just sitting there, so it's not producing any energy. Instead, the core is shrinking and getting hotter. Before long, it'll get hot enough to ignite the helium, which will begin fusing together to make heavier elements. When that ...
... the hydrogen fuel in its core to make helium. The helium is basically just sitting there, so it's not producing any energy. Instead, the core is shrinking and getting hotter. Before long, it'll get hot enough to ignite the helium, which will begin fusing together to make heavier elements. When that ...
Planetary Science. - Nmsu - New Mexico State University
... At the center of the cloud, the collection of gas becomes very dense, and nuclear fusion sets in…A STAR IS BORN ! Dust within the disk, which is rotating around the new star, begins to lump together forming large objects (some destined to become Planets)… far from the Sun, these ‘clumps’ can also gr ...
... At the center of the cloud, the collection of gas becomes very dense, and nuclear fusion sets in…A STAR IS BORN ! Dust within the disk, which is rotating around the new star, begins to lump together forming large objects (some destined to become Planets)… far from the Sun, these ‘clumps’ can also gr ...
Test #4
... a) too many stars, b) glowing interstellar gas, c) interstellar dust, d) planetary nebulae 13. The mass of the galaxy has been found by a) counting the stars it contains, b) determining its gravitational force on nearby galaxies c) estimating the number of interstellar clouds, d) applying Kepler’s 3 ...
... a) too many stars, b) glowing interstellar gas, c) interstellar dust, d) planetary nebulae 13. The mass of the galaxy has been found by a) counting the stars it contains, b) determining its gravitational force on nearby galaxies c) estimating the number of interstellar clouds, d) applying Kepler’s 3 ...
Solar System Star The Milky Way Galaxy The Universe
... • Grouping of stars and interstellar maQer linked together by gravitaCon; each galaxy comprises an average of 100 billion stars. • Extra credit: What was the first “other” galaxy discovered, when was it found, and where? M31, the Andr ...
... • Grouping of stars and interstellar maQer linked together by gravitaCon; each galaxy comprises an average of 100 billion stars. • Extra credit: What was the first “other” galaxy discovered, when was it found, and where? M31, the Andr ...
Galaxy Formation and Evolution Open Problems
... • moderately old stars with low specific angular momentum. • Wide range of metallicity • Triaxial shape (central bar) • Central supermassive BH Stellar Halo • 109 old and metal poor stars (Pop.II) • 150 globular clusters (13 Gyr) • <0.2% Galaxy mass, 2% of the light •Dark Halo ...
... • moderately old stars with low specific angular momentum. • Wide range of metallicity • Triaxial shape (central bar) • Central supermassive BH Stellar Halo • 109 old and metal poor stars (Pop.II) • 150 globular clusters (13 Gyr) • <0.2% Galaxy mass, 2% of the light •Dark Halo ...
globular cluster - Harding University
... distances to a number of these galaxies using Cepheid variable stars and noticed a correlation between the distance to the galaxies and the observed red–shift of the spectrum. He found that the farther away a galaxy was, the greater the red-shift. ...
... distances to a number of these galaxies using Cepheid variable stars and noticed a correlation between the distance to the galaxies and the observed red–shift of the spectrum. He found that the farther away a galaxy was, the greater the red-shift. ...
How do stars appear to move to an observer on the
... This is how bright the star would be if it was 32.6 light years away from the earth If we take the sun with an apparent magnitude of -26.8 and moved it 32.6 light years away, it would have an absolute magnitude of +5 So if the apparent is less (-26.8) then the absolute (+5) the star is closer then 3 ...
... This is how bright the star would be if it was 32.6 light years away from the earth If we take the sun with an apparent magnitude of -26.8 and moved it 32.6 light years away, it would have an absolute magnitude of +5 So if the apparent is less (-26.8) then the absolute (+5) the star is closer then 3 ...
Spitzer Space Telescope
The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space observatory launched in 2003. It is the fourth and final of the NASA Great Observatories program.The planned mission period was to be 2.5 years with a pre-launch expectation that the mission could extend to five or slightly more years until the onboard liquid helium supply was exhausted. This occurred on 15 May 2009. Without liquid helium to cool the telescope to the very low temperatures needed to operate, most of the instruments are no longer usable. However, the two shortest-wavelength modules of the IRAC camera are still operable with the same sensitivity as before the cryogen was exhausted, and will continue to be used in the Spitzer Warm Mission. All Spitzer data, from both the primary and warm phases, are archived at the Infrared Science Archive (IRSA).In keeping with NASA tradition, the telescope was renamed after its successful demonstration of operation, on 18 December 2003. Unlike most telescopes that are named after famous deceased astronomers by a board of scientists, the new name for SIRTF was obtained from a contest open to the general public.The contest led to the telescope being named in honor of astronomer Lyman Spitzer, who had promoted the concept of space telescopes in the 1940s. Spitzer wrote a 1946 report for RAND Corporation describing the advantages of an extraterrestrial observatory and how it could be realized with available or upcoming technology. He has been cited for his pioneering contributions to rocketry and astronomy, as well as ""his vision and leadership in articulating the advantages and benefits to be realized from the Space Telescope Program.""The US$800 million Spitzer was launched from Cape Canaveral Air Force Station, on a Delta II 7920H ELV rocket, Monday, 25 August 2003 at 13:35:39 UTC-5 (EDT).It follows a heliocentric instead of geocentric orbit, trailing and drifting away from Earth's orbit at approximately 0.1 astronomical unit per year (a so-called ""earth-trailing"" orbit). The primary mirror is 85 centimeters (33 in) in diameter, f/12, made of beryllium and is cooled to 5.5 K (−449.77 °F). The satellite contains three instruments that allow it to perform astronomical imaging and photometry from 3 to 180 micrometers, spectroscopy from 5 to 40 micrometers, and spectrophotometry from 5 to 100 micrometers.