The original Hubble Deep Field
offered professional astronomers a glimpse into the earliest views of that process, and with diligence and effort we may travel in that direction.
Cunow continued her work on the age and metallicity gradients and the dust extinction of disc galaxies at intermediate redshifs in the Hubble Deep Field
. She improved the measurements and presented the results at the conference in Rome in October.
Keck turned the Hubble Deep Field
from a pretty picture into a scientific treasure trove."
The hypothesized hierarchical growth of galaxies -- from stellar clumps to majestic spirals and ellipticals -- didn't become evident until the Hubble deep field
Release of the first Hubble Deep Field
. HST resolves quasar host galaxies.
The image, the result of 3.5 days of observations with the recently installed Advanced Camera for Surveys on the Hubble Space Telescope, is several times as sensitive as the Hubble Deep Field
images (SN: 3/1/03, p.
BODY OF EVIDENCE Using one of these large-format infrared cameras on a high-precision telescope in Parnal, Chile, astronomers recently examined the Hubble Deep Field
South, a patch of sky that previously had been viewed for a solid week in visible light by the Hubble Space Telescope.
However, by the mid-1990s there was still no sign of these objects, even in the Hubble Deep Field
, the deepest image that had ever been taken of the sky at visual wavelengths (July issue, page 42).
That's twice the number of background galaxies detected in a landmark set of images--the Hubble Deep Field
North--taken from a different, smaller patch of sky by WFPC-2 in 1995.
THE ORIGINAL Hubble Deep Field
image--the result of plumbing a nondescript patch of Ursa Major for 10 days and nights with the Hubble Space Telescope--changed the course of extragalactic astronomy when it was released in 1996 (see page 42).
Many astronomers have used the data compiled from that region of sky, known as the Hubble Deep Field
North, as a basis for further studies at a variety of wavelengths (SN: 1/20/96, p.
How the Hubble Deep Field
Made Astronomical History