Media Information

 
 
 
Collection:
NASA Spitzer Space Telescope Collection
Title:
Mysterious Blob Galaxies Revealed
Description:
This image composite shows a giant galactic blob (red, left) and the three merging galaxies NASA's Spitzer Space Telescope discovered within it (yellow, right).

Blobs are intensely glowing clouds of hot hydrogen gas that envelop faraway galaxies. They are about 10 times as large as the galaxies they surround. Visible-light images like the one shown here (left), reveal the vast extent of blobs, but don't provide much information about their host galaxies.

Using its heat-seeking infrared eyes, Spitzer was able to see the dusty galaxies tucked inside one well-known blob located 11 billion light-years away. The findings reveal three monstrously bright galaxies, trillions of times brighter than the Sun, in the process of merging together (right).

Spitzer also observed three other blobs located in the same cosmic neighborhood, all of which were found to be glaringly bright. One of these blobs is also known to be a galactic merger, only between two galaxies instead of three. It remains to be seen whether the final two blobs studied also contain mergers.

The Spitzer data were acquired by its multiband imaging photometer. The visible-light image was taken by the Blanco Telescope at the Cerro Tololo Inter-American Observatory, Chile.
Release Date:
2005/01/11
Press Release:
New Clues Found in Ongoing Mystery of Giant Galactic Blobs [ http://www.spitzer.…]
Release Credit:
NASA/JPL-Caltech/H. Teplitz (SSC/Caltech)
Image Credit:
NASA/JPL-Caltech/H. Teplitz (SSC/Caltech)
Object name:
High Redshift Galaxy Cluster J2143-4423
Object type:
Interacting galaxies
Position (J2000):
*RA: *21h42m42.73s *Dec: *-44d30m10.20s
Distance:
19210 Mpc
Constellation:
Grus (the Crane)
Wavelength:
24 microns
Image scale:
30x30 arcsec
Observers:
H. Teplitz (SSC/Caltech)
P. Francis (The Australian National University)
P. Palunas (University of Texas at Austin)
G. Williger (Johns Hopkins University)
B. E. Woodgate (Goddard Space Flight Center)
Instrument:
MIPS
Exposure Date:
October 18, November 4, & November 5, 2004
Exposure Time:
9 hours total
Orientation:
North is up
note:
*Visible-Light Image* Screen-Resolution (450x450): JPEG [ http://ipac.jpl.nas…ssc2005-03a1_small.j pg ]
High-Resolution (1188x1188): JPEG | Mac TIFF | PC TIFF
Credit: CTIO/P. Palunas
note:
*Spitzer Image* Screen-Resolution (450x450): JPEG [ http://ipac.jpl.nas…ssc2005-03a2_small.j pg ]
High-Resolution (1188x1188): JPEG | Mac TIFF | PC TIFF
Credit: NASA/JPL-Caltech/H. Teplitz (SSC/Caltech)
facet_what:
Spitzer Space Telescope
facet_what:
Sun
facet_what:
MIPS
facet_what:
Grus
facet_what:
galaxies
facet_where:
Austin
facet_where:
Texas
facet_where:
Chile
facet_where:
Jet Propulsion Laboratory (JPL)
facet_where:
Washington, D.C.
facet_where:
Goddard Space Flight Center (GSFC)
facet_where:
Stennis Space Center (SSC)
facet_when:
November 5, 2004
facet_when_year:
2004
Image #:
ssc2005-03a
original url:
UID:
SPD-SPITZ-ssc2005-03 a

Mysterious Blob Galaxies Revealed