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 data

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).