News Release Archive: Entire Collection

News Release 32 of 734

November 20, 2008 09:00 AM (EST)

News Release Number: STScI-2008-38

Hubble Resolves Puzzle about Loner Starburst Galaxy

Technical facts about this news release:

About the Object

Object Name:	NGC 1569
Object Description:	Dwarf Irregular Galaxy
Position (J2000):	R.A. 04h 30m 49s Dec. +64° 50' 52"
Constellation:	Camelopardalis
Distance:	11 million light-years (3.4 megaparsecs)
Dimensions:	This image is roughly 2.7 arcminutes (8,700 light-years or 2,700 parsecs) wide.

About the Data

Science Team:	This image was created from HST data from proposals 8133: P. Shopbell (Caltech), R. Dufour (Rice University), D. Walter (South Carolina State University), and A. Wilson (University of Maryland); and 10885: A. Aloisi (STScI/ESA) et al. The science team includes: A. Aloisi (STScI/ESA), L. Angeretti (Astronomical Observatory of Bologna/INAF), F. Annibali and L. Greggio (Astronomical Observatory of Padua/INAF), A. Grocholski (STScI), E. Held (Astronomical Observatory of Padua/INAF), J. Mack (STScI), D. Romano (Astronomical Observatory of Bologna/INAF), M. Sirianni (STScI/ESA), M. Tosi (Astronomical Observatory of Bologna/INAF), and R. van der Marel (STScI).
Instruments/Filters:	ACS: F658N (H-alpha+[N II]) and F606W (wide V) WFPC2: F502N ([O III]) and F487N (H-beta)
Exposure Date(s):	September 1999, November 2006, and January 2007

About the Release

Release Credit:

NASA, ESA, the Hubble Heritage Team (STScI/AURA), and A. Aloisi (STScI/ESA)

Release Date:

November 20, 2008

Color:

The image is a composite of separate exposures made by the ACS and WFPC2 instruments on the Hubble Space Telescope. Three filters were used to sample narrow-wavelength ranges. One filter was used to sample broad wavelengths. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:

ACS	F658N (H-alpha + [N II])	red
ACS	F606W (wide V)	green/cyan
WFPC2	F502N ([O III])	cyan
WFPC2	F487 (H-beta)	blue

Orientation: