News Release Archive:

News Release 327 of 1051

April 30, 2009 09:00 AM (EDT)

News Release Number: STScI-2009-19

Starbursts in Dwarf Galaxies are a Global Affair

Technical facts about this news release:

About the Object
Object Name: NGC 4163 NGC 4068 IC 4662
Object Description: Starburst Galaxy Starburst Galaxy Starburst Galaxy
Position (J2000): R.A. 12h 12m 09s.16
Dec. +36° 10' 09".12
R.A. 12h 04m 00s.80
Dec. +52° 35' 17".99
R.A. 17h 47m 08s.87
Dec. -64° 38' 30".34
Constellation: Canes Venatici Ursa Major Pavo
Distance: 9.5 million light-years or 2.9 megaparsecs 14 million light-years or 4.3 megaparsecs 8 million light-years or
2.4 megaparsecs
Dimensions: 88 arcseconds (4,000 light-years or 1,200 parsecs) wide 92 arcseconds (6,300 light-
years or 1,900 parsecs) wide
83 arcseconds (3,100 light-years or 960 parsecs) wide
About the Data
Data Description:

The images were created from Hubble data from proposal 9771: I. Karachentsev (Russian Academy of Sciences, Special Astrophysical Observatory), B. Tully (University of Hawaii), V. Karachentseva (Kyiv University), A. Dolphin (Raytheon Company), S. Sakai (University of California, Los Angeles), E. Shaya (University of Maryland), and M. Sharina, L. Makarova, and D. Makarov (Russian Academy of Sciences, Special Astrophysical Observatory).

The science team comprises K. McQuinn and E. Skillman (University of Minnesota, Minneapolis), J. Cannon (Macalester College, MN), J. Dalcanton (University of Washington, Seattle), A. Dolphin (Raytheon Company), and D. Stark and D. Weisz (University of Minnesota, Minneapolis).

Instrument: ACS
Exposure Date(s): January 18, 2004; March 28, 2004; July 10, 2004
Exposure Time: 35 minutes per image
Filters: F606W (R) and F814W (I)
About the Release
Image Credit: NASA, ESA, and K. McQuinn (University of Minnesota, Minneapolis)
Release Date: April 30, 2009
Color: These images are composites of several separate exposures made by the ACS instrument on the Hubble Space Telescope. Two filters were used to sample broad wavelength ranges for each image. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are orange/yellow for the I-band (F814W) and cyan/blue for the wide V-band (F606W) filter.  The images have been further adjusted so the colors more closely resemble their true visual appearance, particularly the red hydrogen emission of the star-forming regions.
F814W (I) yellow
F606W (R) cyan
Orientation/Scale: Compass and Scale Image of Starburst Galaxies