News Release Archive:

News Release 397 of 1051

October 16, 2007 10:00 AM (EDT)

News Release Number: STScI-2007-35

Hubble Finds 'Dorian Gray' Galaxy

Technical facts about this news release:

About the Object
Object Name: I Zwicky 18, I Zw 18
Object Description: Galaxy
Position (J2000): R.A. 09h 34m 1s.90
Dec. +55° 14' 26 ".00
Constellation: Ursa Major
Distance: Approximately 60 million light-years (18 Megaparsecs) away.
Dimensions: This image is roughly 1.7 arcminutes (29,000 light-years or 9 kiloparsecs) wide.
About the Data
Data Description: The Hubble image was created from HST data from proposal 10586: A. Aloisi (STScI/ESA), G. Clementini (Astronomical Observatory of Bologna), M. Marconi and I. Musella (Astronomical Observatory of Capodimonte, Italy), A. Saha (National Optical Astronomy Observatories/AURA), M. Sirianni (STScI/ESA), M. Tosi (Astronomical Observatory of Bologna), and R. van der Marel (STScI).

The science team comprises A. Aloisi and M. Sirianni (STScI/ESA), F. Annibali, J. Mack, and R. van der Marel (STScI), A. Saha (National Optical Astronomy Observatories/AURA), and G. Clementini, R. Contreras, G. Fiorentino, M. Marconi, I. Musella, and M. Tosi (Italian National Astrophysics Institutes in Bologna and Naples).
Instrument: ACS/WFC
Exposure Date(s): October 2005 - January 2006
Exposure Time: 15 hours
Filters: F660W (V) and F814W (I)
About the Image
Image Credit: NASA, ESA, and A. Aloisi (STScI/ESA)
Release Date: October 16, 2007

This image is a composite of many separate exposures made by the ACS instrument on the Hubble Space Telescope. Two filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:

F660W (V) cyan
F814W (I) orange
Orientation/Scale: Hubble Finds Mature Galaxy Masquerading as Toddler