Harold W. Yorke

Publications (3)0 Total impact

• Conference Proceeding: Characterizing Extrasolar Planetary Systems

  David Leisawitz, John Carpenter, William C. Danchi, John Debes, Marc Kuchner, William D. Langer, Lee G. Mundy, Joan Najita, David Neufeld, Stephen Rinehart, Aki Roberge, Eugene Serabyn, Sachindev Shenoy, Chris Stark, Mark R. Swain, Stephen C. Unwin, Edward Wright, Harold W. Yorke
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  ABSTRACT: Not Available
  astro2010: The Astronomy and Astrophysics Decadal Survey; 01/2009
• Source

  Available from: David Leisawitz

  Article: ExoPTF Science Uniquely Enabled by Far-IR Interferometry: Probing the Formation of Planetary Systems, and Finding and Characterizing Exoplanets

  David Leisawitz, Tom Armstrong, Chad Bender, Dominic Benford, Daniella Calzetti, John Carpenter, William C. Danchi, Michel Fich, Dale Fixsen, Daniel Y. Gezari, [......], Aki Roberge, Eugene Serabyn, Sachindev Shenoy, Hiroshi Shibai, Robert Silverberg, Johannes Staguhn, Mark R. Swain, Stephen C. Unwin, Edward Wright, Harold W. Yorke
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  ABSTRACT: By providing sensitive sub-arcsecond images and integral field spectroscopy in the 25 - 400 micron wavelength range, a far-IR interferometer will revolutionize our understanding of planetary system formation, reveal otherwise-undetectable planets through the disk perturbations they induce, and spectroscopically probe the atmospheres of extrasolar giant planets in orbits typical of most of the planets in our solar system. The technical challenges associated with interferometry in the far-IR are greatly relaxed relative to those encountered at shorter wavelengths or when starlight nulling is required. A structurally connected far-IR interferometer with a maximum baseline length of 36 m can resolve the interesting spatial structures in nascent and developed exoplanetary systems and measure exozodiacal emission at a sensitivity level critical to TPF-I mission planning. The Space Infrared Interferometric Telescope was recommended in the Community Plan for Far-IR/Submillimeter Space Astronomy, studied as a Probe-class mission, and estimated to cost 800M dollars. The scientific communities in Europe, Japan, and Canada have also demonstrated a keen interest in far-IR interferometry through mission planning workshops and technology research, suggesting the possibility of an international collaborative effort.
  08/2007;
• Article: Astronomical Telescopes and Instrumentation

  David T. Leisawitz, William C. Danchi, Michael J. DiPirro, Lee D. Feinberg, Daniel Y. Gezari, Mike Hagopian, William D. Langer, John C. Mather, Jr. Samuel H. Moseley, Michael Shao, Robert F. Silverberg, Johannes G. Staguhn, Mark R. Swain, Harold W. Yorke, Xiaolei Zhang
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  ABSTRACT: Far infrared interferometers in space would enable extraordinary measurements of the early universe, the formation of galaxies, stars, and planets, and would have great discovery potential. Since half the luminosity of the universe and 98% of the photons released since the Big Bang are now observable at far IR wavelengths (40 - 500 micrometers ), and the Earth's atmosphere prevents sensitive observations from the ground, this is one of the last unexplored frontiers of space astronomy. We present the engineering and technology requirements that stem from a set of compelling scientific goals and discuss possible configurations for two proposed NASA missions, the Space Infrared Interferometric Telescope and the Submillimeter Probe of the Evolution of Cosmic Structure.© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
  07/2000;