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Proceedings Paper

Can we really go for direct exo-planet detection from the ground?
Author(s): Markus Feldt; Thomas F. E. Henning; Stefan Hippler; Robert Weiss; M. Turatto; Ralph Neuhauser; Artie P. Hatzes; Hans Martin Schmid; Rens Waters; Elena Puga; Joana Costa
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Paper Abstract

We are currently investigating the possibilities for a high-contrast, adaptive optics assisted instrument to be placed as a 2nd-generation instrument on ESO's VLT. This instrument will consist of an 'extreme-ao' system capable of producing very high Strehl ratios, a contrast-enhancing device and two differential imaging detection systems. It will be designed to collect photons directly coming from the surface of substellar companions - ideally down to planetary masses - to bright, nearby stars and disentangle them from the stellar photons. We will present our current design study for such an instrument and discuss the various ways to tell stellar from companion photons. These ways include the use of polarimetric and/or spectroscopic information as well as making use of knowledge about photon statistics. Results of our latest simulations regarding the instrument will be presented and the expected performance discussed. Derived from the simulated performance we will also give details about the expected science impact of the planet finder. This will comprise the chances of finding different types of exo-planets - notably the dilemma of going for hot planets marginally separated from their parent stars or cold, far-away plamnets delivering very little radiation, the scientific return of such detections and follow-up examinations, as well as other topics like star-formation, debris disks, and planetary nebulae where a high-resolution, high-contrast system will trigger new break-throughs.

Paper Details

Date Published: 3 March 2003
PDF: 12 pages
Proc. SPIE 4860, High-Contrast Imaging for Exo-Planet Detection, (3 March 2003); doi: 10.1117/12.457656
Show Author Affiliations
Markus Feldt, Max-Planck-Institut für Astronomie (Germany)
Thomas F. E. Henning, Max-Planck-Institut für Astronomie (Germany)
Stefan Hippler, Max-Planck-Institut für Astronomie (Germany)
Robert Weiss, Max-Planck-Institut für Astronomie (Germany)
M. Turatto, Osservatorio di Padova (Italy)
Ralph Neuhauser, Max-Planck-Institut für extraterrestrische Physik (Germany)
Artie P. Hatzes, State Observatory of Thuringen (Germany)
Hans Martin Schmid, ETH Zurich (Switzerland)
Rens Waters, Univ. van Amsterdam (Netherlands)
Elena Puga, Max-Planck-Institut für Astronomie (Germany)
Joana Costa, Max-Planck-Institut für Astronomie (Germany)

Published in SPIE Proceedings Vol. 4860:
High-Contrast Imaging for Exo-Planet Detection
Alfred B. Schultz; Richard G. Lyon, Editor(s)

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