Brightness map of the zodiacal emission from the AKARI IRC All-Sky Survey

J. Pyo, M. Ueno, S. M. Kwon, S. S. Hong, D. Ishihara, M. Ishiguro, F. Usui, T. Ootsubo, T. Mukai

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The first Japanese infrared space mission AKARI successfully scanned the whole sky with its two main instruments, the Infrared Camera (IRC) and the Far-Infrared Surveyor (FIS). The AKARI All-Sky Survey provides us with an invaluable opportunity to examine the zodiacal emission (ZE) over the entire sky in the leading as well as the trailing direction of the Earth's motion. We describe our efforts to reduce the ZE brightness map from the AKARI's survey in the 9 μm waveband. Compared with the interplanetary dust cloud model of Kelsall et al. (1998), the map requires an increase of the contribution of the resonance ring component to the ZE brightness by about 20%. We paid special attention to the north and south ecliptic pole brightnesses. The symmetry plane's inclination and longitude of ascending node need to be modified from those in Kelsall et al. (1998) to reach a best fit to the observed pole brightness difference.

Original languageEnglish
Article numberA53
JournalAstronomy and Astrophysics
Volume523
Issue number3
DOIs
Publication statusPublished - 2010 Nov 16
Externally publishedYes

Keywords

  • infrared: diffuse background
  • interplanetary medium
  • surveys

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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