*Description*:> Holland Ford, Professor of Physics and Astronomy at John Hopkins University, discussing the results to be published at the AAS Meeting and the science behind Gravitational Lensing. Technical facts about this news release: About the Object Object Name: Abell 1689 Object Description: Galaxy Cluster, Gravitational Lens Position (J2000): R.A. 13h 11m 34.20s Dec. -01° 21' 56.0" Constellation: Virgo Distance: The distance to the lensing cluster is 2.2 billion light-years (675 megaparsecs). Dimensions: The ACS image is roughly 3.2 arcminutes (2 million light-years or 630 kiloparsecs) in width. About the Data Instrument: ACS/WFC Exposure Date(s): June, 2002 Exposure Time: 13.2 hours Filters: F475W ("g"), F625W ("r"), F775W ("i"), F850LP ("z") Principal Astronomers: ACS science team: H.C. Ford (JHU), G.D. Illingworth (UCO/Lick Observatory), N. Benitez (JHU), M. Clampin (STScI), G.F. Hartig (STScI), D.R. Ardila (JHU), F. Bartko (Bartko Science & Technology), J.P. Blakeslee (JHU), R.J. Bouwens (UCO/Lick Obs.), T.J. Broadhurst (Racah Institute of Physics, The Hebrew University), R.A. Brown (STScI), C.J. Burrows (STScI), E.S. Cheng (NASA-GSFC), N.J.G. Cross (JHU), P.D. Feldman (JHU), M. Franx (Leiden Observatory), D.A.Golimowski (JHU), C. Gronwall (PSU), L. Infante (Pontificia Universidad Catolica de Chile), R.A. Kimble (NASA GSFC), J.E. Krist (STScI), M.P. Lesser (Steward Obs.), A.R. Martel (JHU), F. Menanteau (JHU), G.R. Meurer (JHU), G.K. Miley (Leiden Obs.), M. Postman (STScI), P. Rosati (ESO), M. Sirianni (JHU), W.B. Sparks (STScI), H.D. Tran (JHU), Z.I. Tsvetanov (JHU), R.L. White (STScI/JHU), and W. Zheng (JHU) About the Image Image Credit: NASA, N. Benitez (JHU), T. Broadhurst (The Hebrew University), H. Ford (JHU), M. Clampin (STScI), G. Hartig (STScI), G. Illingworth (UCO/Lick Observatory), the ACS Science Team and ESA Release Date: January 7, 2003 Orientation: Galaxy Abell 1689's [ http://imgsrc.hubblesite.org/hu/db/2003/01/images/a/formats/compass_large_web.jpg ] What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. Back to top [ #top ] *News Release Number:*: STScI-2003-01f
