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News Release Archive:

News Release 301 of 960

December 4, 2007 10:00 AM (EST)

News Release Number: STScI-2007-42

How White Dwarfs Get Their 'Kicks'

Technical facts about this news release:

About the Object
Object Name: NGC 6397
Object Description: Globular Cluster
Position (J2000): R.A. 17h 40m 41s.36
Dec. -53° 40' 25".3
Constellation: Ara
Distance: 8,500 light-years (2.6 kiloparsecs)
About the Data
Data Description:

This image was created from HST data from proposal 10424:

H. Richer (University of British Columbia), P. Guhathakurta (University of California, Santa Cruz), R.M. Rich (University of California, Los Angeles), J. Anderson (STScI), G. Fahlman (NRC Herzberg Institute of Astrophysics/National Research Council Canada, Saanich, British Columbia), B. Gibson (Swineburne University of Technology, Australia), B. Hansen (University of California, Los Angeles), J. Hurley (Swinburne University of Technology, Australia), J. Kalirai (University of California, Santa Cruz), I. King (University of Washington, Seattle), M. Shara (American Museum of Natural History), and P. Stetson (National Research Council/Herzberg Institute of Astrophysics, Canada).

The science team comprises H. Richer (University of British Columbia), I. King (University of Washington, Seattle), J. Anderson (STScI), J. Coffey (University of British Columbia, Vancouver), G. Fahlman (Herzberg Institute of Astrophysics/National Research Institute of Canada, British Columbia), J. Hurley (Swinburne University of Technology, Australia), and J. Kalirai (University of California, Santa Cruz).

Instrument: ACS/WFC
Exposure Date(s): March and April, 2005
Exposure Time: 4.7 days
Filters: F606W (V) and F814W (I)
About the Image
Image Credit: NASA, ESA, and H. Richer (University of British Columbia)
Release Date: December 4, 2007
Color: This image is a composite of many separate exposures made by the ACS instrument on the Hubble Space Telescope using several different filters. Three filters sample broad wavelength ranges, one isolates the light of hydrogen. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:
F814W (I) red
F606W (V) blue
Orientation: