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Proceedings Paper

Keck Interferometer Nuller science highlights
Author(s): Bertrand Mennesson; Rafael Millan-Gabet; M. M. Colavita; E. Serabyn; P. Hinz; M. Kuchner; W. Liu; R. Barry; C. Stark; S. Ragland; J. Woillez; W. Traub; O. Absil; Denis Defrère; J. C. Augereau; J. Lebreton
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Paper Abstract

We report here on some of the major astronomical observations obtained by the Keck Interferometer Nuller (KIN), the high dynamic range instrument recombining the Keck Telescopes at wavelengths of 8 to 13 microns. A few science targets were observed during the commissioning phase (2004-2007). These early observations aimed at demonstrating the KIN’s ability to spatially resolve and characterize circumstellar dust emission around a variety of targets, ranging from evolved stars to young debris disks. Science operations started then in 2008 with the more demanding KIN exozodi key science programs, augmented by observations of YSOs and hot debris disks between 2009 and 2011. The last KIN observations were gathered in 2011B, and the interpretation of some of the results depicted here is still preliminary (exo-zodi survey) or pending (complicated behavior observed in YSOs). We discuss in particular the initial results of the KIN’s exo-zodi observations, which targeted a total of 40 nearby main sequence single stars. We look for trends in this sample, searching for possible correlations between the measured KIN excesses and basic stellar properties such as spectral type or the presence of dust inferred from separate observations.

Paper Details

Date Published: 12 September 2012
PDF: 12 pages
Proc. SPIE 8445, Optical and Infrared Interferometry III, 844507 (12 September 2012); doi: 10.1117/12.926548
Show Author Affiliations
Bertrand Mennesson, Jet Propulsion Lab. (United States)
Rafael Millan-Gabet, NASA Exoplanet Science Institute (United States)
M. M. Colavita, Jet Propulsion Lab. (United States)
E. Serabyn, Jet Propulsion Lab. (United States)
P. Hinz, Steward Observatory, The Univ. of Arizona (United States)
M. Kuchner, NASA Goddard Space Flight Ctr., Exoplanets and Stellar Astrophysics Lab. (United States)
W. Liu, California Institute of Technology (United States)
R. Barry, NASA Goddard Space Flight Ctr., Exoplanets and Stellar Astrophysics Lab. (United States)
C. Stark, Carnegie Institution for Science (United States)
S. Ragland, W. M. Keck Observatory (United States)
J. Woillez, W. M. Keck Observatory (United States)
W. Traub, Jet Propulsion Lab. (United States)
O. Absil, Univ. de Liège (France)
Denis Defrère, Max-Planck-Institut für Radioastronomie (Germany)
J. C. Augereau, Institut de Planétologie et d’Astrophysique de Grenoble (France)
J. Lebreton, Institut de Planétologie et d’Astrophysique de Grenoble (France)

Published in SPIE Proceedings Vol. 8445:
Optical and Infrared Interferometry III
Françoise Delplancke; Jayadev K. Rajagopal; Fabien Malbet, Editor(s)

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