In:
Publications of the Astronomical Society of Japan, Oxford University Press (OUP), Vol. 58, No. 3 ( 2006-06-25), p. 509-519
Abstract:
We investigated the far-infrared SED of the Galaxy and the Magellanic Clouds by using the COBE (COsmic Background Explorer)/DIRBE (Diffuse InfraRed Background Experiment) ZSMA (Zodi-Subtracted Mission Average) maps at wavelengths of 60$\, {\mu \mathrm {m}}$, 100$\, {\mu \mathrm {m}}$, and 140$\, {\mu \mathrm {m}}$. We analyzed three regions: the galactic plane region with the galactic latitude $\vert b\vert & lt; 5^{\circ}$, the Large Magellanic Cloud region, and the Small Magellanic Cloud region. Because the dust optical depth is much smaller in the far-infrared than in the visible, we could observe cumulative far-infrared radiation from regions with various interstellar radiation field in the line of sight. As a consequence of considering such an effect, we found a common far-infrared color correlation between the 140–100$\, {\mu \mathrm {m}}$ and 100–60$\, {\mu \mathrm {m}}$ intensity ratios in all three galaxies. Although this color correlation cannot be explained by any existing model, it fits very well the far-infrared color of nearby star-forming galaxies.
Type of Medium:
Online Resource
ISSN:
2053-051X
,
0004-6264
DOI:
10.1093/pasj/58.3.509
Language:
English
Publisher:
Oxford University Press (OUP)
Publication Date:
2006
detail.hit.zdb_id:
2206640-8
detail.hit.zdb_id:
2083084-1
SSG:
16,12
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