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Planet Discoverer Interferometer (PDI) I: a potential precursor to Terrestrial Planet Finder

Woolf, N. J. and Angel, J. R. P. and Beichman, C. A. and Burge, J. and Shao, M. and Tenerelli, D. (1998) Planet Discoverer Interferometer (PDI) I: a potential precursor to Terrestrial Planet Finder. In: Astronomical Interferometry. Proceedings of SPIE. No.3350. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 683-689. ISBN 9780819427977.

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We consider a possible precursor interferometer to Terrestrial Planet Finder. The precursor called Planet Discoverer Interferometer (PDI) would search for broadband 10 μm radiation from possible terrestrial planets orbiting stars out to a distance of 8-10pc and at an angular separation of at least 0.1 arcseconds. There are about 20 stars of types A,F,G and K around which an Earth-analog might be detected. PDI would be able to confirm such planets by seeing their orbital motion. PDI would also be able to observe 5 μm radiation from the more massive and younger gas-giant planets around stars up to distances ∼ 150 pc, separated from their star by more than 0.05 arc seconds. It would also see the re-radiated thermal radiation of Jupiter-like planets at temperatures above ∼130K. The device would be a 15m long truss with four SIRTF-like telescopes. It would need to be in a SIRTF-like Earth-trailing orbit, and would be radiatively cooled. A very preliminary design suggest that PDI could fit into the shroud of a Delta II rocket. Similar preliminary calculations suggest that the total lifetime cost of such a mission would be under $300M. Detailed studies of this concept are in process.

Item Type:Book Section
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Beichman, C. A.0000-0002-5627-5471
Additional Information:© 1998 Society of Photo-Optical Instrumentation Engineers (SPIE). Support for TPF and SIM studies at the University of Arizona has been provided by JPL under contract #961268.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Subject Keywords:Extrasolar , terrestrial, planets, interferometer, Origins
Series Name:Proceedings of SPIE
Issue or Number:3350
Record Number:CaltechAUTHORS:20180801-112900767
Persistent URL:
Official Citation:Neville J. Woolf, James Roger P. Angel, Charles A. Beichman, James H. Burge, Michael Shao, Domenick J. Tenerelli, "Planet Discoverer Interferometer (PDI) I: a potential precursor to Terrestrial Planet Finder", Proc. SPIE 3350, Astronomical Interferometry, (24 July 1998); doi: 10.1117/12.317132;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88454
Deposited By: George Porter
Deposited On:01 Aug 2018 21:51
Last Modified:16 Nov 2021 00:27

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