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About the Image

Date
2005-09-27
ID
ssc2005-19a3
Type
Observation
Credit
NASA, ESA/JPL-Caltech/B. Mobasher (STScI/ESA)

About the Object

Name
HUDF-JD2 • UDF033238.74-274839.9
Type
Galaxy > Size > Giant
Distance
12,800,000,000 Light Years
Redshift
6.5

Color Mapping

Band Wavelength Telescope
Optical 440 nm Hubble ACS
Optical 700 nm Hubble ACS
Infrared 2.2 µm Hubble NICMOS
Notes
Colors are approximate

About the Color Mapping Table

Astrometrics

Position (undefined)
RA = 3h 32m 28.7s
Dec = -26° 11' 20.1"
Field of View
0.0 x 0.0 arcminutes
Orientation
North is up
Constellation
Fornax

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09.27.05

Hubble Visible-Light and Near-Infrared View of a "Baby" Galaxy in the Distant Universe

NASA's Spitzer and Hubble Space Telescopes combined forces to uncover one of the most distant galaxies ever seen. The faraway galaxy, named HUDF-JD2 is not seen in the Hubble visible-light image, but was detected using Hubble's near infrared camera and multi-object spectrometer, and appears even brighter at the longer infrared wavelengths, as revealed by the Spitzer infrared camera in a separate image.

At visible wavelengths, the light from the galaxy is absorbed by intervening hydrogen gas, and so the galaxy appears faint in the Hubble visible and near-infrared images. The surprise is how bright is appears to Spitzer in the infrared, suggesting a very massive and distant galaxy.

This image is a false-color composite of Hubble/ACS visible-light data and Hubble/NICMOS near-infrared data, with B-band light represented by blue, R-band light as green and K-band light as red.