News Release Archive:

News Release 10 of 50

June 3, 2008 10:40 AM (EDT)

News Release Number: STScI-2008-21

White Dwarf Lost in Planetary Nebula

Technical facts about this news release:

About the Object
Object Name: SuWt 2
Object Description: Planetary Nebula
Position (J2000): R.A. 13h 55m 43s.23
Dec. -59° 22' 40".03
Constellation: Centaurus
Distance: 6,500 light-years or 2,000 parsecs
Dimensions: The image is approximately 9 arcminutes (17 light-years or 5 parsecs) wide.
About the Data
Data Description: The science team comprises K. Exter and H. Bond (STScI), K. Stassun (Vanderbilt University, Tenn.), P. Maxted and B. Smalley (Keele University, UK), and D. Pollacco (Queen’s University, UK).
Telescope Cerro Tololo Inter-American Observatory (CTIO)/NOAO 1.5m telescope
Exposure Date(s): January 31, 1995
About the Image
Credit: Science Credit: NASA, ESA, NOAO, ESO, NRF, H. Bond and K. Exter (STScI/AURA)
Image Credit: NASA, NOAO, H. Bond and K. Exter (STScI/AURA)
Release Date: June 3, 2008

The image is a composite of separate exposures made by the CTIO 1.5m data. Two filters were used to sample narrow wavelength ranges matching the emission of specific chemical elements. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:

Hα+[O III] green
[O III] blue


Orientation: Ring-Like Planetary Nebula SuWt 2