rosetta - The Institute of Mathematical Sciences
... lander smashed straight onto the comet Tempel. As you see in the picture, a large and bright dust cloud was seen on the comet from the spacecraft, but not much else! NASA used amateur astronomers to observe the comet from Earth. For example, school students in Hawaii, working with other scientists, ...
... lander smashed straight onto the comet Tempel. As you see in the picture, a large and bright dust cloud was seen on the comet from the spacecraft, but not much else! NASA used amateur astronomers to observe the comet from Earth. For example, school students in Hawaii, working with other scientists, ...
Finding the Most Distant Quasars Using Bayesian Selection Methods
... been almost completely ionised, as the first generations of stars—and quasars—emitted sufficient ultraviolet radiation to separate electrons from protons. The rest-frame wavelength of the break is at 0.1216 µm, but the wavelength of all light is increased by the cosmological expansion; the Universe ...
... been almost completely ionised, as the first generations of stars—and quasars—emitted sufficient ultraviolet radiation to separate electrons from protons. The rest-frame wavelength of the break is at 0.1216 µm, but the wavelength of all light is increased by the cosmological expansion; the Universe ...
HH 222: A Giant Herbig-Haro Flow from the
... 5: Landessternwarte Heidelberg, Königstuhl 12, D-69117 Heidelberg, Germany [email protected] 6: Center for Astrophysics and Space Science, University of California San Diego, La Jolla, CA 92093, USA [email protected] ...
... 5: Landessternwarte Heidelberg, Königstuhl 12, D-69117 Heidelberg, Germany [email protected] 6: Center for Astrophysics and Space Science, University of California San Diego, La Jolla, CA 92093, USA [email protected] ...
24.1 Hubble`s Galaxy Classification
... Elliptical galaxies have no spiral arms and no disk. They come in many sizes, from giant ellipticals of trillions of stars, down to dwarf ellipticals of less than a million stars. Ellipticals also contain very little, if any, cool gas and dust, and they show no evidence of ongoing star formation. Ma ...
... Elliptical galaxies have no spiral arms and no disk. They come in many sizes, from giant ellipticals of trillions of stars, down to dwarf ellipticals of less than a million stars. Ellipticals also contain very little, if any, cool gas and dust, and they show no evidence of ongoing star formation. Ma ...
Spectroscopic variability of two Oe stars
... phenomenon towards higher stellar temperatures. Indeed, these stars display emission lines of the H i Balmer series, as well as of other elements, such as He i and Fe ii, but do not exhibit conventional Of emission lines, such as He ii λ 4686 and N iii λ 4634-40. Negueruela et al. (2004) note that p ...
... phenomenon towards higher stellar temperatures. Indeed, these stars display emission lines of the H i Balmer series, as well as of other elements, such as He i and Fe ii, but do not exhibit conventional Of emission lines, such as He ii λ 4686 and N iii λ 4634-40. Negueruela et al. (2004) note that p ...
3. Daylight Mapping
... For CUP1 the ODER offset is set to the value obtained for laboratory mapping and it is not tracking for FoV rotation. This operation can be done also in daylight provided that the position of the star on the IR detector obtained with 25” North (Sect 2.5.1, step 3) and 25” East (Sect 2.5.2, step 2) o ...
... For CUP1 the ODER offset is set to the value obtained for laboratory mapping and it is not tracking for FoV rotation. This operation can be done also in daylight provided that the position of the star on the IR detector obtained with 25” North (Sect 2.5.1, step 3) and 25” East (Sect 2.5.2, step 2) o ...
Curiosities of the Sky
... dazzling vistas ending at the fathomless sea of pure darkness which encloses all. The Galaxy, or Milky Way, surrounds the borders of our island in space like a stellar garland, and when openings appear in it they are, by contrast, far more impressive than the general darkness of the interstellar exp ...
... dazzling vistas ending at the fathomless sea of pure darkness which encloses all. The Galaxy, or Milky Way, surrounds the borders of our island in space like a stellar garland, and when openings appear in it they are, by contrast, far more impressive than the general darkness of the interstellar exp ...
Read an Excerpt!
... said these worlds were leftovers from the birth of the solar system. In 1951, American astronomer Gerard Kuiper suggested the same idea. For many years, however, no one knew if the Edgeworth-Kuiper belt really existed. Then, in 1992, astronomers found an object beyond Pluto. It was just a hundred mi ...
... said these worlds were leftovers from the birth of the solar system. In 1951, American astronomer Gerard Kuiper suggested the same idea. For many years, however, no one knew if the Edgeworth-Kuiper belt really existed. Then, in 1992, astronomers found an object beyond Pluto. It was just a hundred mi ...
lec09_14oct2011
... not seen before w/IRAS. But, only the young ones (age < 3 to 6 MYr) The ages are uncertain due to models, but ~half the young wTTs lack disks (even at 0.8 to 1.5 Myr). Thus, time is NOT the only variable. How might disks ...
... not seen before w/IRAS. But, only the young ones (age < 3 to 6 MYr) The ages are uncertain due to models, but ~half the young wTTs lack disks (even at 0.8 to 1.5 Myr). Thus, time is NOT the only variable. How might disks ...
The astrobiological case for our cosmic ancestry
... Organic polymers and bacterial dust As evidence accumulated in support of the carbon-dust theory, the list of organic molecules found in space began to expand as well – the list now including some molecules that may have been precursors of amino acids and other biochemicals (Hoyle & Wickramasinghe 1 ...
... Organic polymers and bacterial dust As evidence accumulated in support of the carbon-dust theory, the list of organic molecules found in space began to expand as well – the list now including some molecules that may have been precursors of amino acids and other biochemicals (Hoyle & Wickramasinghe 1 ...
ISA_lecture01 - School of Physics
... forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit. A “dwarf planet” is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a ...
... forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit. A “dwarf planet” is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a ...
Proposal - ESA Science
... a huge range of masses, sizes and orbits: from rocky Earth-like planets to large gas giants grazing the surface of their host star. However, the essential nature of these exoplanets remains largely mysterious: there is no known, discernible pattern linking the presence, size, or orbital parameters o ...
... a huge range of masses, sizes and orbits: from rocky Earth-like planets to large gas giants grazing the surface of their host star. However, the essential nature of these exoplanets remains largely mysterious: there is no known, discernible pattern linking the presence, size, or orbital parameters o ...
Cuesta College Eclipsing Binary Project Briefing
... maximum changes in the light-travel time effect are apparent when the Sun and Jupiter are in direct alignment with the observer; the trick here is to somehow measure this change in light-travel time. This is where our eclipsing binary stars comes into play. With no significant outside influences on ...
... maximum changes in the light-travel time effect are apparent when the Sun and Jupiter are in direct alignment with the observer; the trick here is to somehow measure this change in light-travel time. This is where our eclipsing binary stars comes into play. With no significant outside influences on ...
Lecture 12: Evolution of the Galaxy
... • As a result of SN, mean heavy element content of ISM slowly increases. • New stars which form therefore have higher values of heavy element mass fraction, Z, at the time of their birth. The youngest stars are therefore the most heavy-element rich, and the oldest ones (Population II stars) are the ...
... • As a result of SN, mean heavy element content of ISM slowly increases. • New stars which form therefore have higher values of heavy element mass fraction, Z, at the time of their birth. The youngest stars are therefore the most heavy-element rich, and the oldest ones (Population II stars) are the ...
Skyscraper How to Color the Universe by Kim Arcand the
... great circles, the ecliptic - the Sun's apparent path through the zodiacal constellations - and the celestial equator - ours continued upward into the sky - intersect as the Sun, which has been below the celestial equator, will appear to rise that day directly eastward, travel across the sky, then s ...
... great circles, the ecliptic - the Sun's apparent path through the zodiacal constellations - and the celestial equator - ours continued upward into the sky - intersect as the Sun, which has been below the celestial equator, will appear to rise that day directly eastward, travel across the sky, then s ...
Science Across Disciplines
... The discovery of extra-solar planets is one of the greatest achievements of modern astronomy. There are now more than two hundred such objects known, and the recent detection of planets with masses approximately 5 times that of Earth demonstrates that extra-solar planets of low mass exist. In additi ...
... The discovery of extra-solar planets is one of the greatest achievements of modern astronomy. There are now more than two hundred such objects known, and the recent detection of planets with masses approximately 5 times that of Earth demonstrates that extra-solar planets of low mass exist. In additi ...
The STIS CCD Spectroscopic Line Spread Functions
... future, we hope that software will be developed to enable all users to take full advantage of the remarkable rejection that STIS provides off axis. More importantly, we hope that this information on the realized performance of STIS will provide insights for improved instrument performance of future g ...
... future, we hope that software will be developed to enable all users to take full advantage of the remarkable rejection that STIS provides off axis. More importantly, we hope that this information on the realized performance of STIS will provide insights for improved instrument performance of future g ...
comet panstarrs
... On the night of June 5, 2011, the Pan-STAR R S (Panoramic Survey Telescope And Rapid Response System) 1 telescope on Haleakala, Maui, spotted a dim, moving ball of frozen gases and dust. Researchers confirmed the object was officially a comet, and named it PANSTARRS for the telescope that discover ...
... On the night of June 5, 2011, the Pan-STAR R S (Panoramic Survey Telescope And Rapid Response System) 1 telescope on Haleakala, Maui, spotted a dim, moving ball of frozen gases and dust. Researchers confirmed the object was officially a comet, and named it PANSTARRS for the telescope that discover ...
Next Generation VLA Science White Paper
... brightest set of interesting diagnostic lines beyond CO (e.g., HCN, HCO+ , CS, CN) are ∼ 10–30 times fainter than CO, so that a similar quality map targeting these diagnostics would require an impossible 20,000–200,000 hours on the previous generation of forefront facilities. In very bright regions ...
... brightest set of interesting diagnostic lines beyond CO (e.g., HCN, HCO+ , CS, CN) are ∼ 10–30 times fainter than CO, so that a similar quality map targeting these diagnostics would require an impossible 20,000–200,000 hours on the previous generation of forefront facilities. In very bright regions ...
Extrasolar Kuiper Belt Dust Disks
... between 5 µm and 500 µm. This thermal emission dust was observed by the IRAS and COBE space telescopes, and the interplanetary dust particles (IDPs) were detected in situ by dust detectors on the Pioneer 10 and 11, Voyager, Galileo, and Ulysses spacecrafts. Its fractional luminosity is estimated to ...
... between 5 µm and 500 µm. This thermal emission dust was observed by the IRAS and COBE space telescopes, and the interplanetary dust particles (IDPs) were detected in situ by dust detectors on the Pioneer 10 and 11, Voyager, Galileo, and Ulysses spacecrafts. Its fractional luminosity is estimated to ...
Stellar Metamorphosis as Alternative to Nebular Hypothesis
... of tons of star shrapnel known as asteroids, meteorites and small moon-like objects that are undifferentiated. [26] Therefore TYC 8241 2652 is not evidence of star/planet formation but star/planet destruction caused by objects clearing their path for more stable orbits. [27] Mainstream has this proc ...
... of tons of star shrapnel known as asteroids, meteorites and small moon-like objects that are undifferentiated. [26] Therefore TYC 8241 2652 is not evidence of star/planet formation but star/planet destruction caused by objects clearing their path for more stable orbits. [27] Mainstream has this proc ...
Catch an Asteroid - Odysseus Contest
... missions to asteroids. In the project “Catch an Asteroid” we present our look at a silicate asteroid, our telescopic observations of this object and the results of the processing of the images. We tracked the movement of this asteroid one night and measured its equatorial coordinates. We sent these ...
... missions to asteroids. In the project “Catch an Asteroid” we present our look at a silicate asteroid, our telescopic observations of this object and the results of the processing of the images. We tracked the movement of this asteroid one night and measured its equatorial coordinates. We sent these ...
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.