Making high-Accuracy null depth measurements for the LBTI exozodi survey

Bertrand Mennesson, Denis Defrère, Matthias Nowak, Philip M Hinz, Rafael Millan-Gabet, Olivier Absil, Vanessa Bailey, Geoffrey Bryden, William Danchi, Grant M. Kennedy, Lindsay Marion, Aki Roberge, Eugene Serabyn, Andy J. Skemer, Karl Stapelfeldt, Alycia J. Weinberger, Mark Wyatt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

The characterization of exozodiacal light emission is both important for the understanding of planetary systems evolution and for the preparation of future space missions aiming to characterize low mass planets in the habitable zone of nearby main sequence stars. The Large Binocular Telescope Interferometer (LBTI) exozodi survey aims at providing a ten-fold improvement over current state of the art, measuring dust emission levels down to a typical accuracy of ∼12 zodis per star, for a representative ensemble of ∼30+ high priority targets. Such measurements promise to yield a final accuracy of about 2 zodis on the median exozodi level of the targets sample. Reaching a 1 σ measurement uncertainty of 12 zodis per star corresponds to measuring interferometric cancellation ("null") levels, i.e visibilities at the few 100 ppm uncertainty level. We discuss here the challenges posed by making such high accuracy mid-infrared visibility measurements from the ground and present the methodology we developed for achieving current best levels of 500 ppm or so. We also discuss current limitations and plans for enhanced exozodi observations over the next few years at LBTI.

Original languageEnglish (US)
Title of host publicationOptical and Infrared Interferometry and Imaging V
PublisherSPIE
Volume9907
ISBN (Electronic)9781510601932
DOIs
StatePublished - 2016
EventOptical and Infrared Interferometry and Imaging V - Edinburgh, United Kingdom
Duration: Jun 27 2016Jul 1 2016

Other

OtherOptical and Infrared Interferometry and Imaging V
CountryUnited Kingdom
CityEdinburgh
Period6/27/167/1/16

Fingerprint

depth measurement
Binoculars
Telescopes
Interferometer
Interferometers
Stars
Telescope
Null
Star
High Accuracy
interferometers
telescopes
Visibility
Space Missions
Target
Measurement Uncertainty
visibility
Evolution System
Light emission
Mid-infrared

Keywords

  • Direct Imaging
  • Exoplanets
  • Exozodiacal light
  • High Contrast
  • Interferometry
  • Mid-Infrared
  • Nulling

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Mennesson, B., Defrère, D., Nowak, M., Hinz, P. M., Millan-Gabet, R., Absil, O., ... Wyatt, M. (2016). Making high-Accuracy null depth measurements for the LBTI exozodi survey. In Optical and Infrared Interferometry and Imaging V (Vol. 9907). [99070X] SPIE. https://doi.org/10.1117/12.2231839

Making high-Accuracy null depth measurements for the LBTI exozodi survey. / Mennesson, Bertrand; Defrère, Denis; Nowak, Matthias; Hinz, Philip M; Millan-Gabet, Rafael; Absil, Olivier; Bailey, Vanessa; Bryden, Geoffrey; Danchi, William; Kennedy, Grant M.; Marion, Lindsay; Roberge, Aki; Serabyn, Eugene; Skemer, Andy J.; Stapelfeldt, Karl; Weinberger, Alycia J.; Wyatt, Mark.

Optical and Infrared Interferometry and Imaging V. Vol. 9907 SPIE, 2016. 99070X.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Mennesson, B, Defrère, D, Nowak, M, Hinz, PM, Millan-Gabet, R, Absil, O, Bailey, V, Bryden, G, Danchi, W, Kennedy, GM, Marion, L, Roberge, A, Serabyn, E, Skemer, AJ, Stapelfeldt, K, Weinberger, AJ & Wyatt, M 2016, Making high-Accuracy null depth measurements for the LBTI exozodi survey. in Optical and Infrared Interferometry and Imaging V. vol. 9907, 99070X, SPIE, Optical and Infrared Interferometry and Imaging V, Edinburgh, United Kingdom, 6/27/16. https://doi.org/10.1117/12.2231839
Mennesson B, Defrère D, Nowak M, Hinz PM, Millan-Gabet R, Absil O et al. Making high-Accuracy null depth measurements for the LBTI exozodi survey. In Optical and Infrared Interferometry and Imaging V. Vol. 9907. SPIE. 2016. 99070X https://doi.org/10.1117/12.2231839
Mennesson, Bertrand ; Defrère, Denis ; Nowak, Matthias ; Hinz, Philip M ; Millan-Gabet, Rafael ; Absil, Olivier ; Bailey, Vanessa ; Bryden, Geoffrey ; Danchi, William ; Kennedy, Grant M. ; Marion, Lindsay ; Roberge, Aki ; Serabyn, Eugene ; Skemer, Andy J. ; Stapelfeldt, Karl ; Weinberger, Alycia J. ; Wyatt, Mark. / Making high-Accuracy null depth measurements for the LBTI exozodi survey. Optical and Infrared Interferometry and Imaging V. Vol. 9907 SPIE, 2016.
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AU - Absil, Olivier

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