Technical facts about this news release:
| About the Object |
| Object Name: |
Arp 87 |
| Object Description: |
Interacting Galaxy Pair |
| Position (J2000): |
R.A. 11h 40m 46s.12
Dec. +22° 26' 44".80 |
| Constellation: |
Leo |
| Distance: |
Approximately 300 million light-years (92 million parsecs) away. |
| Dimensions: |
This image is roughly 2.3 arcminutes (203,000 light-years or 62 kiloparsecs) wide. |
|
| About the Data |
| Data Description: |
The Hubble image was created from HST data from proposal 11092: K. Noll, H. Bond, C. Christian. L. Frattare, F. Hamilton, Z. Levay, M. Mutchler, W. Januszewski (Hubble Heritage Team/STScI). |
| Instrument: |
WFPC2 |
| Exposure Date(s): |
February 2007 |
| Exposure Time: |
6.3 hours |
| Filters: |
F450W (B), F555W (V), F656N (Halpha + [N II]), and F814 (I) |
|
| About the Image |
| Image Credit: |
NASA, ESA, and the Hubble Heritage Team (STScI/AURA) |
| Release Date: |
October 30, 2007 |
| Color: |
This image is a composite of many separate exposures made by the WFPC2 instrument on the Hubble Space Telescope. Three filters were used to sample broad wavelength ranges, while one filter was used to sample a narrow wavelength band. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:
| F450W (B) |
blue |
| F555W (V) |
green |
| F656N (Halpha + [N II]) and F814 (I) |
red |
|
| Orientation/Scale: |
 |
|
