News Release Archive:

News Release 1 of 4

October 27, 2011 09:00 AM (EDT)

News Release Number: STScI-2011-30

Astronomers Pin Down Galaxy Collision Rate

Technical facts about this news release:

About these Object

Object Description:	Merging Galaxies from the All-Wavelength Extended Groth Strip International Survey (AEGIS)
Position (J2000):	R.A. 14h 17m Dec. +52° 30'
Constellation:	Boötes

About the Data

Notes:

The science team for this release comprises: J. Lotz (STScI), P. Jonsson (Harvard-Smithsonian Center for Astrophysics), T. J. Cox (Carnegie Observatories), D. Croton (Centre for Astrophysics and Supercomputing/Swinburne University), J. Primack (University of California, Santa Cruz), R. Somerville (STScI/JHU), and K. Stewart (NASA/JPL).

The surveys used in this study include: COSMOS (HST; PI: N. Scoville; HST Archival Data), GEMS (PI: H.-W. Rix; HST Archival Data), GOODS (PI: M. Giavalisco; HST Archival Data), AEGIS (PI: M. Davis; HST Archival Data), HUDF (PI: S. Beckwith; HST Archival Data), and DEEP2 (PI: M. Davis; Keck Survey).

Data Description:

The images released with this science finding were created from HST data from proposal 10134: M. Davis (University of California, Berkeley).

Instrument:

ACS/WFC

Exposure Date(s):

June 2004 – March 2005

Filters:

F555W (V) + F814W (I)

Colors:

This image is a composite of many separate exposures made by the ACS/WFC instrument on the Hubble Space Telescope using two different filters that isolate broad wavelengths. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:

F555W (V)	blue
F555W (V) + F814W (I)	green
F814W (I)	red

About the Release

Credit:	NASA, ESA, and J. Lotz (STScI)
Release Date:	October 27, 2011
Orientation: