February 18, 2014
KINGFISH and S4G Data Releases
The Key Insights on Nearby Galaxies: A Far-Infrared Survey with Herschel (KINGFISH) open time key program is an imaging and spectroscopic survey of 61 nearby (d<30 Mpc) galaxies, chosen to cover a wide range of galaxy properties and local interstellar medium (ISM) environments found in the nearby universe. Its broad goals are to characterize the ISM of present-day galaxies, the heating and cooling of their gaseous and dust components, and to better understand the physical processes linking star formation and the ISM. Herschel PACS and SPIRE images of the KINGFISH sample are now available.
The Spitzer Survey of Stellar Structure in Galaxies (S4G) exploration science program consists of a sample of 2,352 nearby galaxies, which have been mapped with IRAC channels 1 and 2 (3.6 and 4.5 microns). Galfit models are now available for all galaxies in S4G.
January 3, 2014
Spitzer Heritage Archive Update
A new version of the Spitzer Heritage Archive user interface is now available, featuring:
- Access to new versions of the Spitzer Enhanced Imaging Products, and the ability to plot SEDs of objects in the Source List.
- Improved ability to create XY plots of quantities derived from catalog columns.
- Precovery of archival observations of moving objects.
This 2MASS Atlas Image Mosaic shows the heart of the Virgo Cluster
of galaxies. This famous galaxy cluster, seen toward the constellation Virgo and covering in total more
than 7 degrees on the sky, is the closest large cluster to us, at a distance of about 17 Mpc. This
50' by 50' field includes M86 and M84 (center right).