National Aeronautics and Space Administration University of Maryland Ball Aerospace & Technologies Corp. Jet Propulsion Laboratory California Institute of Technology Credits & Awards Contact Us Privacy Statement
spacer image
spacer
UMD ASTRONOMY spacer STUDENT INFO spacer UMD OBSERVATORY spacer PDS-SBN spacer BIMA
spacer
Deep Impact
Deep Impact
Home Search Sitemap Frequently Asked Questions Contact Us spacer
Deep Impact Mission Science Technology Mission Results Gallery Education Discovery Zone Your Community Press Gallery - Images

Maps and Spectra of Ice-rich Areas

Maps and Spectra of Ice-rich Areas
Hi-Res JPEG (88.9 KB)

Maps and spectra of ice-rich areas relative to non-ice regions of the nucleus. a) and b) HRI visible (16 m/pixel); c and d) MRI visible (82 m/pixel); e and f) IR (120 m/pixel) data. Note the IR scan at the highest resolution (e and f) only covers the upper half of the nucleus, as shown. The ice-rich areas are mapped in the visible images as combinations of high 450/750 nm (or 387/750 nm for MRI) and low 950/750 nm, and in the infrared by the strength of absorptions at 2.0 µm. The visible spectra are scaled to a value of 1.0 at 750 nm, while the IR spectra are scaled at the same value at 2.0 µm. To facilitate detection of these subtle variations, all data are scaled to the same broad smooth area of the nucleus, indicated by the red boxes. IR spectra from each of the three ice rich regions include distinct absorptions due to water ice (f).

CREDIT: NASA/UM/SAIC J. M. Sunshine et al., Science 311, 1453 (2006); published online 2 February 2006 (10.1126/science.1123632). Reprinted with permission from AAAS. Permission to reproduce.

 

redbar-bottom
spacer
spacer spacer spacer spacer spacer spacer
spacer FirstGov - Your First Click to the U.S. Government   NASA Home Page spacer
Web Curator: Maura Rountree-Brown
Webmaster: Elizabeth Warner
Last Updated: Thursday September 01, 2011
Clearance No. CL 01-0944
spacer spacer spacer spacer spacer spacer