AKARI ASTROF

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AKARI (ASTRO-F)
ltStructuregt

• What is AKARI?
• An infrared-ray astronomical satellite from the
  ISAS of the JAXA.
• Purpose
• An understanding of the formation and evolution
  of galaxies.
• Perform an all-sky survey and map the entire sky
  in six infrared bands from 9 to 180 micron.
• Launch Date
• at 628 a.m. on February 22, 2006 (Japan Standard
  Time, JST) from the Uchinoura Space Center (USC).

The telescope is cooled to a temperature of minus
367 Celsius degrees by super-fluid liquid and the
mechanical cooler. The cooled telescope will
enable us to observe the infrared light to very
high sensitivity
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Far-Infrared image of the Large Magellanic Cloud
this infrared emission indicates that a great
number of stars are currently being formed in
this galaxy.
(better sensitivity, spatial resolution and wider
wavelength coverage)
Tarantula Nebula
By AKARI (65,90,140 µm)
By IRAS
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The death of a star
detects a shell like dust cloud surrounding this
star at a distance of about 0.3 light years from
the central star

• AKARI commenced the mission's All-Sky Survey
  observations in May, 2006 and will finish its
  first coverage of the entire sky in November. The
  estimated completeness of the coverage at the
  finish of the first coverage will be about 70
  percent, which is what was expected, since some
  areas were known not to be presently observable
  due to disturbances by the Moon and other
  reasons.

This implies that a short and violent ejection of
mass took place in the star some 10,000 years
ago!!