Common Correlations between 60, 100 and 140 um Intensities in the Galactic Plane and Magellanic Clouds

Details Common Correlations between 60, 100 and 140 um Intensities in the Galactic Plane and Magellanic Clouds Common Correlations between 60, 100 and 140 um Intensities in the Galactic Plane and Magellanic Clouds

2006-04-10

arxiv.org/abs/astro-ph/0604191v2

Astronomy and Astrophysics

Astrophysics

Accepted for publication in The Publications of the Astronomical Society of Japan. 11 pages, 9 figures

Scientific paper

We investigate 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 um, 100 um and 140 um. We analyze three regions: the Galactic plane region with the Galactic latitude |b|<5 degree, the Large Magellanic Cloud (LMC) region, and the Small Magellanic Cloud (SMC) region. Because the dust optical depth is much smaller in the far-infrared than in the visible, we may observe cumulative far-infrared radiation from regions with various interstellar radiation field (IRSF) in a line of sight. As consequence of considering such an effect, we find a common far-infrared color correlation between the 140 - 100 um and 60 - 100 um intensity ratios in all the 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.

Affiliated with

Also associated with

No associations

Rating

Common Correlations between 60, 100 and 140 um Intensities in the Galactic Plane and Magellanic Clouds does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Common Correlations between 60, 100 and 140 um Intensities in the Galactic Plane and Magellanic Clouds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Common Correlations between 60, 100 and 140 um Intensities in the Galactic Plane and Magellanic Clouds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-701338