Cold dust and its heating sources in M 33

Shinya Komugi, Tomoka Tosaki, Kotaro Kohno, Takashi Tsukagoshi, Yoichi Tamura, Rie Miura, Sachiko Onodera, Nario Kuno, Ryohei Kawabe, Koichiro Nakanishi, Tsuyoshi Sawada, Hajime Ezawa, Grant W. Wilson, Min S. Yun, Kimberly S. Scott, David H. Hughes, Itziar Aretxaga, Thushara A. Perera, Jason E. Austermann, Kunihiko TanakaKazuyuki Muraoka, Fumi Egusa

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We have mapped the nearby face-on spiral galaxy M 33 in the 1.1 mm dust continuum using AzTEC on Atacama Submillimeter Telescope Experiment (ASTE). The preliminary results are presented here. The observed dust has a characteristic temperature of ∼ 21 K in the central kpc, radially declining down to ∼ 13 K at the edge of the star forming disk. We compare the dust temperatures with KS band flux and star formation tracers. Our results imply that cold dust heating may be driven by long-lived stars even nearby star forming regions.

Original languageEnglish
Title of host publicationTracing the Ancestry of Galaxies
Subtitle of host publicationOn the Land of our Ancestors
EditorsClaude Carignan, Claude Carignan, Francoise Combes, Ken Freeman
Number of pages4
Publication statusPublished - 2010 Dec

Publication series

NameProceedings of the International Astronomical Union
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221


  • (ISM:) dust
  • galaxies: ISM

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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