News Release Archive:

News Release 91 of 884

May 25, 2011 02:00 PM (EDT)

News Release Number: STScI-2011-16

NASA's Hubble Finds Rare Blue Straggler Stars in the Milky Way's Hub

Technical facts about this news release:

About the Object

Object Name:	SWEEPS fields
Object Description:	Stellar Field Near the Galactic Bulge
Position (J2000):	R.A. 17h 59m 00s Dec. -29 ° 12' 00"
Constellation:	Sagittarius

About the Data

Data Description:	This image was created from HST data from proposal 9750: K. Sahu, R. Gilliland, H. Bond, S. Casertano, M. Livio, and N. Panagia (STScI), T. Brown (University Corporation for Atmospheric Research), D. Minniti (Catholic University of Chile), A. Renzini (Astronomical Observatory of Padova, Italy), R. Rich (University of California, Los Angeles), and M. Zoccali (Catholic University of Chile). The science findings also include data taken with the HST proposal 10466: K. Sahu (STScI) et al. Additional members of the science team include W. Clarkson (Indiana University and UCLA), and T. Brown, E. Smith, and J. Anderson (STScI).
Instrument:	ACS/WFC
Exposure Date(s):	February 22 - 29, 2004
Exposure Time:	49 hours
Filters:	F606W (R) and F814W (I)

About the Image

Image Credit:

NASA, ESA, W. Clarkson (Indiana University and UCLA), and K. Sahu (STScI)

Release Date:

May 25, 2011

Colors:

This image is a composite of many separate exposures made by the ACS instrument on the Hubble Space Telescope using two different filters. Two 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:

F606W V	blue
F606W+F814W	green
F814W I	red

Orientation:

Compass and Scale Image of Hubble SWEEPS Field