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摘要

NASA's Spitzer Space Telescope's sensitive infrared detectors map out faint regions of new star formation in this pair of colliding galaxies known as Arp 107. Like a beautiful pearl necklace, young star clusters have formed along the ring-like tidal arm in this system. Spitzer images at 8 microns (second picture above) provide a clear view of these clumps of young stars. In contrast, in the shorter wavelength 3.6 micron band (first picture), the older stars in the small companion to the northeast and the bridge connecting the two galaxies are bright. The color-coded multi-band picture (third picture; red=8.0 microns, blue=3.6 microns) emphasizes this difference in stellar ages.

North is up and east is to the left on these images. The field of view is 3 arcminutes.

These Spitzer images were presented at the American Astronomical Society meeting in Minneapolis, Minnesota, on May 30, 2005. A journal article with a detailed analysis of these maps has been submitted to the Astronomical Journal.

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描述 Interacting Galaxy Pair Arp 107
日期
來源 http://gallery.spitzer.caltech.edu/Imagegallery/image.php?image_name=sig05-006
作者 NASA/JPL-Caltech/B. J. Smith (East Tennessee State University)
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see http://gallery.spitzer.caltech.edu/Imagegallery/image.php?image_name=sig05-006 High quality tif files also avaliable.

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Public domain 本作品由NASA創作,屬於公有領域。根據NASA的版權政策:“NASA的創作除非另有聲明否則不受版權保護。”(參見:Template:PD-USGov/zhNASA版權政策JPL圖像使用政策
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目前2007年7月9日 (一) 22:50於 2007年7月9日 (一) 22:50 版本的縮圖1,150 × 500(357 KB)Anzibanonzi==Summary== NASA's Spitzer Space Telescope's sensitive infrared detectors map out faint regions of new star formation in this pair of colliding galaxies known as Arp 107. Like a beautiful pearl necklace, young star clusters have formed along the ring-like

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