 |
About
this Object
Object Name: |
Westerlund 2 and Gum 29 |
Object Description: |
Cluster and Emission Nebula/Star-forming Region |
Position (J2000):
|
R.A. 10h 23m 58.10s
Dec. -57° 45' 48.96" |
Constellation: |
Carina |
Distance: |
20,000 light-years (6,130 parsecs) |
Dimensions: |
This image is 7.4 arcminutes (43.2 light-years or 13.4 parsecs) wide. |
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About
the Data
Data Description: |
Data of Westerlund 2 were obtained from the HST proposals 13038: A. Nota (ESA/STScI), E. Sabbi and C. Christian (STScI), E. Grebel and P. Zeidler (Astronomisches Rechen-Institut Heidelberg), M. Tosi (INAF, Osservatorio Astronomico di Bologna), A. Bonanos (National Observatory of Athens, Astronomical Institute), and S. de Mink (University of Amsterdam); and 14039: Z. Levay, M. Mutchler, J. Mack, L. Frattare, S. Meyett, M. Livio, and C. Christian (STScI/AURA), K. Noll (NASA/GSFC), A. Nota (STScI/ESA), and E. Sabbi (STScI). |
| Instruments, Filters, Exposure Dates, and Times: |
| Instrument |
Filter |
Exposure Date |
Exposure Time |
| ACS/WFC |
F555W (V) |
September 2013 - November 2014 |
9531 seconds |
| ACS/WFC |
F814W (I) |
9755 seconds |
| WFC3/IR |
F125W (J) |
November 2014 |
3788 seconds |
|
|
About
this Image
Credit: |
NASA, ESA, the Hubble Heritage Team (STScI/AURA), A. Nota (ESA/STScI), and the Westerlund 2 Science Team |
Release Date: |
April 23, 2015 |
Colors: |
These images are composites of separate exposures acquired by the ACS and the WFC3 instruments on the Hubble Space Telescope. Several filters were used to sample broad and narrow wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are:
| Edge/Nebula |
ACS/WFC: F555W (V)
|
blue |
ACS/WFC: F555W (V) and F814W (I)
|
green |
ACS/WFC: F814W (I)
|
red |
| Central portion of Westerlund 2 Cluster |
| ACS/WFC: F555W (V) |
blue |
ACS/WFC: F814W (I)
|
green |
| WFC3/IR: F125W (J) |
red |
|
Orientation/Scale: |
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