News Release Archive:

News Release 157 of 828

February 12, 2008 09:00 AM (EST)

News Release Number: STScI-2008-08

Astronomers Find One of the Youngest and Brightest Galaxies in the Early Universe

Technical facts about this news release:

About the Object

Object Name:	Abell 1689
Object Description:	Galaxy Cluster
Position (J2000):	R.A. 13h11m 34s.20 Dec. -01° 21' 56".0
Constellation:	Virgo
Distance:	The distance to the lensing cluster is 2.2 billion light-years (675 megaparsecs). The distance to the lensed galaxy is about 12.8 billion light-years.

About the Data

Science Team:	L. Bradley (The Johns Hopkins University), R. Bouwens (University of California - Santa Cruz), H. Ford (The Johns Hopkins University), G. Illingworth (University of California - Santa Cruz), M. Jee (University of California - Davis), N. Benítez (Instituto de Matemáticas y Física Fundamental), T. Broadhurst (Tel Aviv University), M. Franx (Leiden Observatory), B. Frye (Dublin City University), L. Infante (Pontificia Universidad Católica), V. Motta (Universidad de Valparaíso), P. Rosati (European Southern Observatory), R. White (Space Telescope Science Institute), and W. Zheng (The Johns Hopkins University).
Data:	Hubble ACS The ACS data used in this study was from HST proposal 9289.	Hubble NICMOS The NICMOS data used in this study was from HST proposals: 10150 and 10996.	Spitzer he archival data used in this study was from Spitzer proposal 20439.
Instrument:	ACS/WFC	NICMOS/NIC3	IRAC
Filters:	F475W (g), F625W (r), F775W (i), F850LP (z)	F110W (J), F160W (H)	IRAC 1 3.6 microns IRAC 2 4.5 microns
Exposure Date(s):	June 12-21, 2006	F110W: March 18-May 28, 2005 F160W: June 14, 2007	Feb 11-12, 2006
Exposure Time:	13.2 hours	F110W: 13.4 hours F160W: 0.7 hours	22.2 hours

About the Image

Image Credit:

NASA, ESA, L. Bradley (JHU), R. Bouwens (UCSC), H. Ford (JHU), and G. Illingworth (UCSC)

Release Date:

February 12, 2008

Color:

The color image of Abell 1689 is a composite of separate exposures made by the ACS instrument on the Hubble Space Telescope. Three filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:

F475W (g)	blue
F625W (r)	green
F850LP (z)	red

Orientation: