SAGE IRAC Matched Epoch Archive Virtual Observatory Resource

Authors
  1. SAGE team
  2. Published by
    NASA/IPAC Infrared Science Archive
Abstract
The Spitzer Space Telescope Survey of the Large Magellanic Cloud Legacy Project Surveying the Agents of a Galaxy's Evolution (SAGE) traces the life cycle of observable matter that drives the evolution of a galaxy's appearance. SAGE has revealed over 6 million sources including ~150,000 evolved stars, ~50,000 young stellar objects and the diffuse interstellar medium with column densities > 1.2×1021 cm -2. The data will provide fundamental insights into the physical processes of the interstellar medium, the formation of new stars and the injection of mass by evolved stars and their relationships on the galaxy-wide scale of the Large Magellanic Cloud.

In comparison to the catalog, the archive has more source fluxes (fewer nulled wavelengths) and some more sources but these additions have more uncertainty associated with them. For the catalog, the S/N must be greater than [6, 6, 6, 10] for IRAC bands [3.6um], [4.5um], [5.8um] and [8.0um] for the flux to appear in the corresponding wavelength column. Whereas for the archive, the S/N must be greater than [5, 5, 5, 5] for IRAC bands [3.6um], [4.5um], [5.8um] and [8.0um]. For the catalog, sources with neighbors within a 2" radius are excluded (culled). For the archive, sources within a 0.5" radius are excluded. The difference in criteria for the catalog and archive creation is more complex and described in Section 5.2 of the SAGE Data Delivery Document.

This archive contains multi-epoch IRAC data for all the sources detected in both epochs of the IRAC Archive. Averaged fluxes and the variability indices are provided for each IRAC band.
Keywords
  1. Large Magellanic Cloud
See also HTML
https://irsa.ipac.caltech.edu/data/SPITZER/SAGE/doc/SAGEIRACMatchv3_descriptions.html
IVOA Identifier IVOID
ivo://irsa.ipac/Spitzer/Catalog/SAGE/SAGEI-MatchAr

Access

IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://irsa.ipac.caltech.edu/SCS?table=sage_ar_irac_match&
IVOA Table Access TAP
https://irsa.ipac.caltech.edu/TAP
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
Web browser access HTML
https://irsa.ipac.caltech.edu/cgi-bin/Gator/nph-dd?catalog=sage_ar_irac_match

History

2015-01-14T02:45:00Z
Resource record created
2010-11-04
update

Contact

Name
IRSA Support Team
Postal Address
E-Mail
irsasupport@ipac.caltech.edu
Telephone