Enhancing Science with the Hubble Legacy Archive

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Enhancing Science with the Hubble Legacy Archive

• Bologna, January 29, 2008
• Brad Whitmore
• OUTLINE
• The potential for enhanced archival science
• What is the Hubble Legacy Archive (HLA) ?
• A quick samplers pack
• Demos available in the poster room.

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Potential for Enhanced Science

• Our goal is to optimize the science return from
  the Hubble Space Telescope by providing online,
  enhanced Hubble products and advanced browsing
  capabilities.
• We take advantage of various advances in the past
  decade
• growing archives (less need to propose oneself)
• cheap disk space (so can put all data online)
• improved Hubble products (e.g., multidrizzled
  ACS and WFPC2 images, source lists, grism
  extractions, )
• Increase overall science
• make it easier to browse and download HST data
• reduce redundancy
• reach future generations of astronomers (and
  public) by
• integration into the Virtual Observatory

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Note the URL will point to our Early Data
Release until early February.
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Google-like one box
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Advanced Search Option
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Inventory View
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Footprints for easier browsing of what Hubble
data already exists
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Image View - subset of M101 images.
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Interactive Display of M101 image
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HLA source list overlay for blowup of M101 image
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• Comparison of HLA source lists with Stetson
  ground-based photometry of 47 TUC.
• offset 0.02 mag (N4)
• RMS scatter 0.007 mag (N4)

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The brighter/darker control can bring out the
full dynamic range

• The Hubble Legacy

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HLA gtgtgt
Color images are automatically produced if
observations in two or more filters are
available.
Lars Christiansen (ECF) gtgtgt
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Four out of 600 ACS and STIS images of SN1987A
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Image view of some STIS data
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Image view and interactive display of STIS
long-slit spectral data
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Image view - GHRS spectral previews
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NICMOS GRISM Extractions from ST-ECF
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The Team (partial list)

• STScI (integration, cutouts, footprints,
  associations, source lists, interfaces, )
• - Warren Miller (Acting Project Manager, Lead
  Engineer)
• - Brad Whitmore (Project Scientist, source
  lists)
• - Anton Koekemoer (Integration Scientist,
  multidrizzle pipeline, astrometry)
• - Niall Gaffney (Software Engineer)
• - Rick White (cutouts)
• - Steve Lubow, Gretchen Greene (footprints)
• - Brian McLean (astrometry)
• - Helmut Jenkner (consultant)
• - Kevin Lindsay (source lists), Matt Stankiewicz
  (quality control)
• ECF (spectra, e.g., NICMOS grism
  extractions) CADC (WFPC2 images, )
• - Richard Hook (ECF Proj. Man.) - David Schade
  (CADC Proj. Man.)
• - Wolfram Freudling (NICMOS lead) - Daniel
  Durand (WFPC2, source list)
• - Alberto Micol (pipeline meta data)
• - Martin Kuemmel (grism extraction)
• - Harald Kuntschner (science validation)