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... , to study selected galactic and extragalactic sources, and to map extended sources. For infrared astronomy, IRAS represented as great an improvement over ground-based telescopes as the Palomar 200-in. telescope ... 's telescope. Because fewer than 1,000 infrared sources were cataloged before the IRAS launch, the sensitivity of IRAS produced a survey of a large unexplored area in the electromagnetic spectrum. The ...

... ''' '''VOLUME 36 No. 1 JANUARY 1983''' - P. E. CLEGG SCIENTIFIC OBJECTIVES OF IRAS 3 - R. C. VAN HOLTZ THE IRAS PROJECT ORGANISATION AND MISSION OPERATIONS 6 - H. C BEVAN P. H. McPHERSON ... SCIENCE ANAYLYSIS AT THE OCC 38 - JOHN H. DUXBURY U.S. DATA PROCESSING FOR THE IRAS PROJECT 43 - - '''SPACE CHRONICLE''' '''EDITOR: A. WILSON''' '''VOLUME 36 No. 2 FEBRUARY 1983''' - NICHOLAS L ...

... and intensities of more than 200,000 infrared objects. During its 300 days of observations, IRAS carried out the first complete survey of the infrared sky and made many discoveries, including ... cannot exist any other way." In addition, NASA announced that same day that astronomers studying IRAS data at the University of Groningen, the Netherlands, had discovered three giant dust shells that ...

... previously. Dr. James Houck of Cornell University, one of 18 astronomers on the three-nation IRAS science team, said at JPL that only 20 small galaxies outside the Milky Way were ... Magellanic Cloud, galaxy closest to the Milky Way, than ever discovered by Earth telescopes. The IRAS telescope, cooled by liquid helium to 2.5 ° above absolute zero to offset any stray ... ," seeing cooler objects in greater detail than astronomers thought possible. Over its 12-month lifetime, IRAS could survey 95% of the sky in the infrared, never attempted from the ground. Infrared ...

... the first hardware-a thermal-model tape recorder-for the earth-orbiting infrared astronomical satellite IRAS to their counterparts in the Netherlands for testing, before delivering the actual flight recorder in ... Netherlands, where the spacecraft was being built. After completing construction and installation of the telescope, IRAS would return to the U.S. for tests at JPL . ( JPL Universe, June 23/78 ...

... was the first evidence of large solid objects orbiting a star other than the Sun. IRAS scientists Dr. H.H. Aumann of JPL and Dr. Fred Gillett of Kitt Peak National ... as a standard for measuring other stars' brightness and spectra) as a source for calibrating IRAS . "To their surprise," Science magazine said that Vega's image in the 20-, 60-, and ... similar stars or than expected from an A-type star. The heat-sensitive telescope on IRAS was measuring infrared radiation extending out as far as 80 astronomical units (about 7.4 ...

... the large infrared luminosity. The third and most mysterious class of extragalactic objects discovered by IRAS was the extremely luminous infrared galaxies corresponding to very faint optical galaxies. Such galaxies produced ... is, galaxies that were undergoing a collision or near collision with a neighboring galaxy. The IRAS survey demonstrated the profound effect such collisions had on galaxies, and it could well be ...

... joint endeavor of NASA, Netherlands Aerospace Agency, and U.K. Science and Engineering Research Council, IRAS , was a 2,360-pound spacecraft carrying a 22-inch Cassegrain telescope cryogenically cooled by ... very little information," according to Dr. Dale Compton, telescope manager at Ames Research Center (ARC). IRAS was designed to cover about 95% of the sky over the next sixth months and ...

... , N.J., for examination. (NY Times, Dec 15/83, A-1) JPL announced that the IRAS had found a ring of planets being born around Fomalhaut, one of the most studied ... substantial size exist around a star that is not our sun," said Dr. Gerry Neugebuer, IRAS program scientist at JPL . "These objects could be a solar system in a different stage ... our own or the one that we found to be circling Vega," he added. The IRAS detected the two extraterrestrial solar systems by measuring the temperature of the bodies circling the ...

... of 96% of the entire sky, was completed by the international science team of the IRAS . This was a milestone in the history of astronomy and would provide a wealth of ... a wavelength region that was nearly impossible to study from the Earth's surface. The IRAS catalogs printed nearly a quarter-million infrared sources-stars, galaxies, and newly forming stars-in ... were also available on microfiche (24 cards) and magnetic tape comprising 60 megabytes of data. IRAS was a joint project of the space agencies of the United States, United Kingdom, and ...

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