The infrared universe

Details The infrared universe The infrared universe

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984spwd....2....4d&link_type=abstract

Space World (ISSN 0038-6332), vol. U-2-242, Feb. 1984, p. 4-7.

Astronomy and Astrophysics

Astronomy

Cosmic Dust, Infrared Astronomy, Infrared Astronomy Satellite, Spaceborne Astronomy, Orion Constellation

Scientific paper

Data from the Infrared Astronomical Satellite (IRAS) are discussed. Images made from sensor data show two rings of dust representing the lower and upper limits of dust particles in orbit in the asteroid belts; infrared 'cirrus' clouds composed of carbon dust particles, and galaxies which emit 50 times more radiation in infrared than in visible light. Three 'shells' of dust were found extending four light years from one side of the decaying star Betelgeuse, suggesting that as the star moves, it leaves the shells behind. Infrared emissions from young stars hidden behind a gas cloud identified as Bernard Five were seen to diminish after 100,000 years. An object identified as 1983 TB is found to have an orbit matching that of the Geminid meteors, approaching to within nine million miles of the sun. The satellite was equipped with four arrays of infrared detectors (12, 25, 50, 100-micron wavelengths) cooled by superfluid liquid helium to -455 F, and travelled in a 500 mile high sun-synchronous orbit from January to November, 1983.

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