News Release Archive:

News Release 27 of 71

October 24, 2006 10:00 AM (EDT)

News Release Number: STScI-2006-33

Hubble Yields Direct Proof of Stellar Sorting in a Globular Cluster

Technical facts about this news release:

About the Object
Object Name: 47 Tucanae, NGC 104
Object Description: Globular Cluster
Position (J2000): R.A. 00h 24m 05s.67
Dec. -72° 04' 52".6
Constellation: Tucana
Distance: This obejct is roughly 15,000 light-years (4,600 parsecs) away.
Dimensions: This image is 1 arcminute (4.6 light-years or 1.4 parsecs) wide.
About the Data
Data Description:

This image was created from HST data from the following proposals:

5912, 6467, and 7503: G. Meylan (Ecole Polytechnique Federale de Lausanne), D. Minniti (Universidad Catolica de Chile), S. Phinney (California Institute of Technology), C. Pryor (Rutgers University), B. Sams (Mediateam, Germany), and C. Tinney (Anglo-Australian Observatory)

8267: R. Gilliland (STScI), D. Naef (Observatoire de Geneve), A. Sarajedini (University of Florida), S. Sigurdsson (Pennsylvania State University), D. VandenBerg (University of Victoria), T. Brown (University Corporation For Atmospheric Research), A. Burrows (University of Arizona), W. Cochran (University of Texas, Austin), P. Edmonds (Harvard University), S. Frandsen (Aarhus University), S. Vogt, P. GuhaThakurta, and D. Lin (University of California, Santa Cruz), G. Marcy (University of California, Berkeley), M. Mayor (Observatoire de Geneve), and E. Milone (University of Calgary)

9019: R. Bohlin (STScI), G. De Marchi (ESA/STScI), and R. Gilliland (STScI)

9266: R. Gilliland, K. Sahu, and P. Goudfrooij (STScI)

9028: G. Meurer and H. Tran (Johns Hopkins University)

9443: I. King (University of Washington) and J. Anderson (Rice University)

The international team was made of the following scientists: D.E. McLaughlin (University of Leicester), J. Anderson (Rice University), G. Meylan (Ecole Polytechnique Federale de Lausanne), K. Gebhardt (University of Texas, Austin), C. Pryor (Rutgers University), D. Minniti (Pontifica Universidad Catolica), and S. Phinney (Caltech).

Instrument: WFPC2, ACS/WFC, and ACS/HRC
Exposure Date(s): October 1995, Noviber 1997, July 1999, October 1999, July 2001, April 2002, July 2002
Filters: F300W (Wide U), F336W (U), F475W (SDSS g)
[For image: F475W (SDSS g), F555W (V), and F814W (I)]
About the Image
Image Credit: NASA, ESA, and G. Meylan (Ecole Polytechnique Federale de Lausanne)
Release Date: October 24, 2006

This image is a composite of many separate exposures made by the ACS instrument on the Hubble Space Telescope using three different filters 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 blue
F555W green
F814W red

Orientation: Hubble Space Telescope (ACS) Image of 47 Tucanae