AKARI IRC survey of the Large Magellanic Cloud: A new feature in the infrared color-magnitude diagram

Yoshifusa Ita, Takashi Onaka, Daisuke Kato

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We observed an area of 10 deg of the Large Magellanic Cloud using the Infrared Camera on board AKARI. The observations were carried out using five imaging filters (3, 7, 11, 15, and 24μm) and a dispersion prism (2 - 5μm, λ/Δλ ∼ 20) equipped in the IRC. The 11 and 15μm data, which are unique to AKARI IRC, allow us to construct color-magnitude diagrams that are useful to identify stars with circumstellar dust. We found a new sequence in the color-magnitude diagram, which is attributed to red giants with luminosity fainter than that of the tip of the first red giant branch. We suggest that this sequence is likely to be related to the broad emission feature of aluminium oxide at 11.5μm.

Original languageEnglish
Pages (from-to)9-13
Number of pages5
JournalProceedings of the International Astronomical Union
Volume4
Issue numberS256
DOIs
Publication statusPublished - 2008 Jul 1
Externally publishedYes

Keywords

  • Circumstellar matter
  • Galaxies: individual (LMC)
  • Magellanic Clouds
  • Stars: AGB and post-AGB
  • Stars: mass loss

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

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