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Galaxy HUDF-JD2 – Infrared

Galaxy HUDF-JD2 – Infrared
The Spitzer Infrared Array Camera (IRAC), easily detected the galaxy at longer infrared wavelengths. Spitzer's IRAC is sensitive to the light from older, redder stars which should make up most of the mass in a galaxy. The brightness of the infrared galaxy suggests that it is quite massive.

About the Object

  • R.A. Position
    R.A. PositionRight ascension – analogous to longitude – is one component of an object's position.
    3h 32m 28s.74s
  • Dec. Position
    Dec. PositionDeclination – analogous to latitude – is one component of an object's position.
    -27° 48' 39".9
  • Constellation
    ConstellationOne of 88 recognized regions of the celestial sphere in which the object appears.
    Fornax
  • Distance
    DistanceThe physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs.
    This galaxy has a redshift of z = 6.5.

About the Data

  • Data Description
    Data DescriptionProposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
    Science Team: The astronomers who planned the observations and analyzed the data. "PI" refers to the Principal Investigator.
    The HUDF image was created from HST data from proposal 9978: S. Beckwith, S. Malhotra, M. Giavalisco, N. Panagia, J. Rhoads, M. Stiavelli, R. Somerville, S. Casertano, B. Margon, C. Blades, J. Caldwell, and M. Clampin (STScI), M. Corbin (CSC), M. Dickinson, H. Ferguson, and A. Fruchter (STScI), R. Hook (STScI/ECF), S. Jogee, A. Koekemoer, R. Lucas, M. Sosey and L. Bergeron (STScI). The NICMOS HUDF image was created from HST data from proposal: 9803: R. Thompson (U. Arizona), G. Illingworth and R. Bouwens (UCSC), M. Dickinson (STScI), D. Eisenstein and X. Fan (U. Arizona), M. Franx (U. Leiden), M. Rieke (U. of Arizona) , A. Riess (STScI) , P. van Dokkum (Yale U.). The science team for HUDF-JD2 includes: B. Mobasher (STScI/ESA); M. Dickinson (NOAO); H.C. Ferguson and M. Giavalisco (STScI); T. Wiklind (STScI/ESA); D. Stark and R.S. Ellis (Caltech); M. Fall (STScI); N. A. Grogin (JHU); L. Moustakas (STScI); N. Panagia (STScI/ESA); M. Sosey, M. Stiavelli, E. Bergeron, and S. Casertano (STScI); P. Ingram (Gemini Obs.); A. Koekemoer (STScI); I. Labbe (Carnegie Obs.); M. Livio (STScI); B. Rogers (Gemini Obs.); C. Scarlata (Inst. for Astronomy, Zurich, Switzerland); J. Venet, A. Renzini and P. Rosati (ESO); H. Kuntschner, M. Kummel, and J.R. Walsh (STECF/ESO). The Spitzer science team includes: H. Yan (SSC, Caltech), M Dickinson (NOAO), D Stern (JPL), P.R.M. Eisenhardt (JPL), R.-R. Chary (SSC, Caltech), M. Giavalisco (STScI), H.C. Ferguson (STScI), S. Casertano (STScI), C.J. Conselice (Caltech), C. Papovich (Steward), W.T. Reach (SSC, Caltech), N. Grogin (STScI), L.A. Moustakas (JPL), M. Ouchi (STScI).
  • Instrument
    InstrumentThe science instrument used to produce the data.
    SST>IRAC
  • Exposure Dates
    Exposure DatesThe date(s) that the telescope made its observations and the total exposure time.
    February 2004, Exposure Time: 5 days
  • Filters
    FiltersThe camera filters that were used in the science observations.
    IRAC: 3.6 microns, 4.5 microns, 5.8 microns, and 8.0 microns
  • Object Name
    Object NameA name or catalog number that astronomers use to identify an astronomical object.
    Hubble Ultra Deep Field; HUDF, HUDF-JD2, UDF033238.74-274839.9
  • Object Description
    Object DescriptionThe type of astronomical object.
    High-Redshift Galaxy in the Hubble Ultra Deep Field
  • Release Date
    September 27, 2005
  • Science Release
    Spitzer and Hubble Team Up to Find “Big Baby” Galaxies in the Newborn Universe
    Read the release
  • Credit
    NASA, ESA, B. Mobasher (STScI/ESA) and M. Dickinson (Spitzer Science Center)

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Related Images & Videos

Galaxy HUDF-JD2 in the Hubble Ultra Deep Field

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Galaxy HUDF-JD2 From the Hubble Ultra Deep Field

Galaxy HUDF-JD2 From the Hubble Ultra Deep Field

A blow-up of one small area of the Hubble Ultra Deep Field used to identify where the distant galaxy is located. The galaxy's visible light has been absorbed by traveling billions of light-years through intervening hydrogen.

Galaxy HUDF-JD2 - Near Infrared

Galaxy HUDF-JD2 - Near Infrared

The galaxy was detected using Hubble's Near Infrared Camera and Multi-Object Spectrometer (NICMOS). But at near infrared wavelengths, it is very faint and red.

Galaxy HUDF-JD2 in Visible and Infrared Light

Galaxy HUDF-JD2 in Visible and Infrared Light

Composite of visible-light (Hubble) and infrared (Spitzer) images of the distant galaxy HUDF-JD2 in the Hubble Ultra Deep Field.

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Details

Last Updated
Mar 28, 2025
Contact
Media

Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov

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