What is SWIRE
The Spitzer
Wide-area InfraRed Extragalactic Survey
(SWIRE) is a wide-area, high galactic
latitude, imaging survey to trace the evolution
of dusty, star-forming galaxies, evolved stellar
populations, and active galactic nuclei as a
function of environment from redshifts, z ~ 3,
when the Universe was about 2 billion years old,
to the present time. SWIRE has surveyed roughly
50 square degrees with the MIPS far-infrared
camera and the with the IRAC mid-infrared camera.
The SWIRE team
web pages have extensive project
information.
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The SWIRE Fields SWIRE Spitzer and
Ancillary data are available here from the
Spring 2005 Data Release 2 of Enhanced
Products from the Spitzer Science Center
(SSC).
SWIRE surveyed 50 square degrees distributed
over six fields specifically chosen to be
the largest contiguous areas on the sky with
minimal infrared background. The current
data release includes data from all 6
regions on the sky, known as
ELAIS-N1, ELAIS-N2,
XMM-LSS, the Lockman Hole
(LH), ELAIS-S1 and Chandra
Deep Field South (CDFS). Several of
these fields have been the subject of
previous surveys, most notably the European
Large-Area ISO Survey (ELAIS),
which surveyed 12 square degrees of the sky
using the ISO
instruments CAM and PHOT. There have also
been Spitzer Guaranteed Time Observations in
the CDFS and Lockman Hole regions. The SWIRE
survey area generally contains these
previous surveys within it's boundaries,
users should consult the SWIRE
team web pages and the
data delivery document (pdf) for
further explanation.
Back to SWIRE
data search page.
Instruments and wavelengths of
observations
The SWIRE Spitzer data include IRAC
(3.6, 4.5, 5.8 and 8.0 µm) and MIPS
(24, 70 and 160 µm), and optical Ancillary
for selected regions. This optical data in most
cases is u, b, r, i, z data and originates either
from the 2.5m Isaac Newton Telescope (INT) in La Palma,
taken in conjunction with the ELAIS survey, or
from new data originating primarily at KPNO and CTIO. Image
data are currently available here for the SWIRE
ELAIS-EN1, ELAIS-EN2, Lockman Hole
(LH) and XMM fields. IRAC 3-color
JPEG previews of each field can be found here
(and within the search results): EN1,
EN2,
Lockman,
XMM,
ES1 and
CDFS
Ancillary image and catalog data are
also available from Infrared Space
Observatory's (ISO)
ISOCAM observations in the Lockman Hole I
& II (ADS links:
ISOCAM observations in the Lockman Hole - I
(Shallow) Survey and
ISOCAM observations in the Lockman Hole - II
(Deep) Survey. The Lockman Hole Shallow
Survey, the shallowest and most extended
among the ISOCAM Guaranteed Time Extragalactic
Surveys (IGTES, Elbaz et al.1999), has been
reduced with the technique of Lari et al. (2001).
These ISOCAM 14.3 µm observations cover a
region of 0.55 square arcminutes in the direction
of the Lockman Hole. 457 sources are detected
above the 5-sigma threshold with fluxes in the
interval 0.25-19. mJy. The ISOCAM Deep
Survey is a 20 X 20 square arcmins area in
the Lockman Hole, at 14.3 µm. The catalog
contains 283 sources detected above the 5-sigma
threshold, with fluxes in the interval 0.1-8 mJy.
The catalogue is 90% complete at 1 mJy. The
positional accuracy, estimated from the
cross-correlation of infrared and optical
sources, is around 1.5 arcsec.
SWIRE catalog data are available using
IRSA's Gator Catalog
Search Engine, which allows for complex search
queries.
How to search for data
The SWIRE (released) data coverage is
represented in red as overlays on the
ISSA all-sky image
within the data
search page. There are three methods to
search for data: (1) use the Quick Search
links for each field name to get data for the
entire field (search size is ~7.0 square
degrees), (2) type in a coordinate or object name
and search size (default is 1.8 square deg) at
the bottom of the search page, or (3) click on
any red region on the allsky map to get a
close-up of the area (the map click method search
size defaults to 1.8 square degrees, but is
adjustable at the bottom search criteria
form).
Back to SWIRE
data search page.
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