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Detection of circular polarization in light scattered from photosynthetic microbes
(2009-05)
The identification of a universal biosignature that could be sensed remotely is critical to the prospects for success in the search for life elsewhere in the universe. A candidate universal biosignature is homochirality, ...
Circular polarization in scattered light as a possible biomarker
(2009)
Biological molecules exhibit homochirality and are optically active. Therefore, it is possible that the scattering of light by biological molecules might result in a macroscopic signature in the form of circular polarization. ...
An atlas of Hubble Space Telescope spectra and images of nearby spiral galaxies
(2003)
We have observed 54 nearby spiral galaxies with the Space Telescope Imaging Spectrograph (STIS) on the Hubble Space Telescope to obtain optical long-slit spectra of nuclear gas disks and STIS optical ( R band) images of ...