News Release Archive:

News Release 525 of 1051

December 1, 2004 12:01 AM (EST)

News Release Number: STScI-2004-35

Hubble Uncovers a Baby Galaxy in a Grown-Up Universe

Technical facts about this news release:

About the Object
Object Name: I Zwicky 18 (I Zw 18)
Object Description: Irregular Dwarf Galaxy
Position (J2000): R.A. 09h 34m 00s.9
Dec. 55° 14' 34".2
Constellation: Ursa Major
Distance: 45 million light-years (14 Megaparsecs)
Dimensions: This image is 50 arcseconds (11,000 light-years or 3.3 kiloparsecs) wide.
About the ACS Data
Data Description: The Hubble image was created from HST data from proposal 9400: T. Thuan (Univ. of Virginia) and Y. Izotov (Main Astronomical Observatory, Kyiv, UA).
Instrument: ACS/WFC
Exposure Date(s): May 26 – June 6, 2003
Exposure Time: 19 hours
Filters: F555W (V) and F814W (I)
About the NICMOS Data
Data Description: The Hubble NICMOS data are from the following HST proposals: 7461 and 7880: G. Ostlin (Stockholm Univ.), N. Bergvall, A. Hidalgo Gamez, and K. Olofsson (Uppsala Astronomical Observatory), and J. Rönnback (Uppsala Univ.). The science team is comprised of G. Ostlin of (Stockholm Observatory) and M. Mouhcine (Univ. of Nottingham).
Instrument: NICMOS
Exposure Dates: December 28, 1997; Feb 15/22, 1998
Exposure Time: 12 hours
Filters: F110W (J), F160W (H), F205W (K), F171M (1.68-1.76 µm) and F180M (1.76-1.83 µm)
About the Image
Image Credit: NASA, ESA, Y. Izotov (MAO, Kyiv, UA) and T. Thuan (Univ. of Virginia)
Release Date: December 1, 2004
Orientation: I Zwicky 18: Possibly the Youngest Galaxy Ever Seen