Physics – Optics
Scientific paper
Dec 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.9305l&link_type=abstract
American Astronomical Society, 195th AAS Meeting, #93.05; Bulletin of the American Astronomical Society, Vol. 31, p.1513
Physics
Optics
Scientific paper
We have used the Keck Adaptive Optics System to observe six galaxies at resolutions close to 50 milliarcseconds in the near infrared (1.6 microns). These are the highest resolution images ever achieved on faint galaxies at these wavelengths and are sharper than Hubble Space Telescope optical images. We are able to determine accurate bulge and disk sizes and general morphologies as well as search for compact central nuclei and bright star forming regions. With a larger data set we hope to study the evolution of galaxies concentrating on: where and at what rates star formation is occurring, how common are central active nuclei and starbursts, what is the merger rate and when did large disk systems stabilize. These observations were made possible by inverting the problem of finding guide stars near target objects. Instead we have used a non-AO infrared camera to first find faint galaxies near bright guide stars at relatively high Galactic latitudes. This is very similar to the Hubble deep fields, where the telescope intentionly integrated in ``blank'' fields. These observations are preliminary to spectroscopic work that will begin later this year.
Glassman Tiffany Michelle
Lai Olivier
Larkin James E.
Wizinowich Peter
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