history of astro outline 2014
... Mars, Jupiter and Saturn, since they appear high in the night sky, have orbits outside the Earth’s orbit. The configuration (or orbit) of each planet. The measurement of each planet’s sideral and synodic period. The calculated distance of each planet to the Sun. 1576 AD ...
... Mars, Jupiter and Saturn, since they appear high in the night sky, have orbits outside the Earth’s orbit. The configuration (or orbit) of each planet. The measurement of each planet’s sideral and synodic period. The calculated distance of each planet to the Sun. 1576 AD ...
Low mass star formation
... Large population of brown dwarfs & even “free-floating planets” being discovered/inferred. Formation mechanisms unclear but one relatively overlooked is gravoturbulent fragmentation (Padoan & Nordlund 2004) - can overcome the stringent density requirement for Jeans-type collapse Needs sensitive cont ...
... Large population of brown dwarfs & even “free-floating planets” being discovered/inferred. Formation mechanisms unclear but one relatively overlooked is gravoturbulent fragmentation (Padoan & Nordlund 2004) - can overcome the stringent density requirement for Jeans-type collapse Needs sensitive cont ...
Chapter 7
... Up until the mid 1990’s the only planets known were those in our solar system. As a result, the theories we developed to explain the formation of a solar system fit our system. Since the 1990’s we have discovered hundreds of extrasolar planets. How does our theory match these newly discovered worlds ...
... Up until the mid 1990’s the only planets known were those in our solar system. As a result, the theories we developed to explain the formation of a solar system fit our system. Since the 1990’s we have discovered hundreds of extrasolar planets. How does our theory match these newly discovered worlds ...
Slide 1
... – Calculate a function from the defocus data to determine the defocus needed at flight temperatures. – Using these results we will cool the telescope to flight temperature and test the defocus stability. ...
... – Calculate a function from the defocus data to determine the defocus needed at flight temperatures. – Using these results we will cool the telescope to flight temperature and test the defocus stability. ...
Use of 3D virtual environments in Teaching Astronomy and Physics
... beginning of each observing session the students must align the telescope with a known star in order to allow the coordinates indicated on the telescope’s computer handset to coincide with the actual coordinates that the telescope is physically pointing at. Without this alignment (commonly known as ...
... beginning of each observing session the students must align the telescope with a known star in order to allow the coordinates indicated on the telescope’s computer handset to coincide with the actual coordinates that the telescope is physically pointing at. Without this alignment (commonly known as ...
Methods Of Discovering Extra solar Planets.
... • Hot jupiters are gas giants that is close to the star and very hot. • The average temperature of this hot giants range from 1,700 to 1,200 degrees F. • The hot Jupiters can orbit the wrong way. What it means the star will be going one way while the planet goes the other way. • To make thing even w ...
... • Hot jupiters are gas giants that is close to the star and very hot. • The average temperature of this hot giants range from 1,700 to 1,200 degrees F. • The hot Jupiters can orbit the wrong way. What it means the star will be going one way while the planet goes the other way. • To make thing even w ...
The myopia in the Hubble space telescope
... The primary and secondary mirrors have a hyperboloidal shape in order to eliminate the spherical aberration as well as another important aberration called coma. When during the construction of the optical surface, the light source cannot be located near the centre of curvature as is traditional in t ...
... The primary and secondary mirrors have a hyperboloidal shape in order to eliminate the spherical aberration as well as another important aberration called coma. When during the construction of the optical surface, the light source cannot be located near the centre of curvature as is traditional in t ...
Cosmic Distance Ladder
... • Refraction caused by the atmosphere limits the accuracy to 0.01 arcseconds. • d=1/p|d|=|p|/p2 • Reliable measurements, those with errors of 10% or less, can only be achieved at stellar distances of no more than about 100 pc. • Space-based telescopes are not limited by this effect and can accura ...
... • Refraction caused by the atmosphere limits the accuracy to 0.01 arcseconds. • d=1/p|d|=|p|/p2 • Reliable measurements, those with errors of 10% or less, can only be achieved at stellar distances of no more than about 100 pc. • Space-based telescopes are not limited by this effect and can accura ...
Report Sheet
... 33. What will happen ultimately to all the atoms that now make up your body (be specific and accurate) Hint: the answer requires more than just step 77 to answer- _________________________________________________________ _______________________________________________________________________________ ...
... 33. What will happen ultimately to all the atoms that now make up your body (be specific and accurate) Hint: the answer requires more than just step 77 to answer- _________________________________________________________ _______________________________________________________________________________ ...
Sample exam 2
... 12. What are the conditions necessary to initiate star formation? Give at least three different characteristics, and how each leads to (or is needed for) star formation. 13. Suppose you are looking at the emission spectrum of gaseous helium. You dutifully write down the wavelengths of emission. You ...
... 12. What are the conditions necessary to initiate star formation? Give at least three different characteristics, and how each leads to (or is needed for) star formation. 13. Suppose you are looking at the emission spectrum of gaseous helium. You dutifully write down the wavelengths of emission. You ...
The Life of a Star
... shells being ejected into space (a planetary nebula) the red super giant tears itself apart in an unbelievably violent explosion called a supernova. As the radiation and debris clear, a neutron star emerges. This tiny object, about 20 km in diameter, is all that’s left of the massive super giant. It ...
... shells being ejected into space (a planetary nebula) the red super giant tears itself apart in an unbelievably violent explosion called a supernova. As the radiation and debris clear, a neutron star emerges. This tiny object, about 20 km in diameter, is all that’s left of the massive super giant. It ...
Stellar Parallax Problems
... 6. A. The European Space Agency sent an exact copy of the Gaia mission to orbit Saturn and take parallax measurements, what would be the largest distance to a star that the Gaia spacecraft could measure from that orbit? ...
... 6. A. The European Space Agency sent an exact copy of the Gaia mission to orbit Saturn and take parallax measurements, what would be the largest distance to a star that the Gaia spacecraft could measure from that orbit? ...
Quo Vadis
... • How can one find, independent on satellites and/or any other space or ground-based detectors, operating at different wavelengths, many VHE gamma ray sources ? • A sensitive sky survay instrument can do it! 22 February 2006 ...
... • How can one find, independent on satellites and/or any other space or ground-based detectors, operating at different wavelengths, many VHE gamma ray sources ? • A sensitive sky survay instrument can do it! 22 February 2006 ...
Abstract Molecules are important tools to unveil the history, the
... In this thesis I underline the importance of high resolution spectroscopy in the laboratory and in space, and the symbiotic bond between laboratory spectroscopy and radioastronomy. My work is divided in two parts. The first part concerns high resolution spectroscopy of unstable molecules in the labo ...
... In this thesis I underline the importance of high resolution spectroscopy in the laboratory and in space, and the symbiotic bond between laboratory spectroscopy and radioastronomy. My work is divided in two parts. The first part concerns high resolution spectroscopy of unstable molecules in the labo ...
Grade 9 Applied Science
... long…). To make memorizing these terms easier, you may wish to do only one page at a time. Learn all the terms, go away, two hours later try and do the page again by testing your recall. If you can do Page 1 correctly, go to Page 2. Repeat this process for all pages. As well, come back and do Page 1 ...
... long…). To make memorizing these terms easier, you may wish to do only one page at a time. Learn all the terms, go away, two hours later try and do the page again by testing your recall. If you can do Page 1 correctly, go to Page 2. Repeat this process for all pages. As well, come back and do Page 1 ...
ES11_Ch23_Lecture
... • Refracting telescope • Uses a lens (called the objective) to bend (refract) the light to produce an image • Light converges at an area called the focus • Distance between the lens and the focus is called the focal length • The eyepiece is a second lens used to examine the image directly • Have an ...
... • Refracting telescope • Uses a lens (called the objective) to bend (refract) the light to produce an image • Light converges at an area called the focus • Distance between the lens and the focus is called the focal length • The eyepiece is a second lens used to examine the image directly • Have an ...
spring_2002_final - University of Maryland Astronomy
... E. supermassive black holes will gradually devour their host galaxies. 26. Why does heliocentric parallax only work as a reliable distance method for relatively nearby stars? A. Spectra can only be taken for the brightest stars that are relatively nearby. B. As distance increases, the parallax angle ...
... E. supermassive black holes will gradually devour their host galaxies. 26. Why does heliocentric parallax only work as a reliable distance method for relatively nearby stars? A. Spectra can only be taken for the brightest stars that are relatively nearby. B. As distance increases, the parallax angle ...
Scattering (and the blue sky)
... More accurately, a gas cloud is only opaque within spectral lines, while a star is opaque at all wavelengths. The brightness of each depends on the usual T4 relation. If, as is usually the case, the cloud is colder than the star (or the star’s atmosphere is colder than its surface), then an absorpti ...
... More accurately, a gas cloud is only opaque within spectral lines, while a star is opaque at all wavelengths. The brightness of each depends on the usual T4 relation. If, as is usually the case, the cloud is colder than the star (or the star’s atmosphere is colder than its surface), then an absorpti ...
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.