The LBTI Hunt for Observable Signatures of Terrestrial Systems (HOSTS) survey: A key NASA science program on the road to exoplanet imaging missions

W. Danchi, V. Bailey, G. Bryden, D. Defrère, C. Haniff, P. Hinz, G. Kennedy, B. Mennesson, R. Millan-Gabet, G. Rieke, A. Roberge, E. Serabyn, A. Skemer, K. Stapelfeldt, A. Weinberger, M. Wyatt

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

  • 8 Citations

Abstract

The Hunt for Observable Signatures of Terrestrial planetary Systems (HOSTS) program on the Large Binocular Telescope Interferometer (LBTI) will survey nearby stars for faint exozodiacal dust (exozodi). This warm circumstellar dust, analogous to the interplanetary dust found in the vicinity of the Earth in our own system, is produced in comet breakups and asteroid collisions. Emission and/or scattered light from the exozodi will be the major source of astrophysical noise for a future space telescope aimed at direct imaging and spectroscopy of terrestrial planets (exo-Earths) around nearby stars. About 20% of nearby field stars have cold dust coming from planetesimals at large distances from the stars (Eiroa et al. 2013, A&A, 555, A11; Siercho et al. 2014, ApJ, 785, 33). Much less is known about exozodi; current detection limits for individual stars are at best ~ 500 times our solar system's level (aka. 500 zodi). LBTI-HOSTS will be the first survey capable of measuring exozodi at the 10 zodi level (3σ). Detections of warm dust will also reveal new information about planetary system architectures and evolution. We will describe the motivation for the survey and progress on target selection, not only the actual stars likely to be observed by such a mission but also those whose observation will enable sensible extrapolations for stars that will not be observed with LBTI. We briefly describe the detection of the debris disk around η Crv, which is the first scientific result from the LBTI coming from the commissioning of the instrument in December 2013, shortly after the first time the fringes were stabilized.

LanguageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume9146
ISBN (Print)9780819496140
DOIs
StatePublished - 2014
EventOptical and Infrared Interferometry IV - Montreal, Canada
Duration: Jun 23 2014Jun 27 2014

Other

OtherOptical and Infrared Interferometry IV
CountryCanada
CityMontreal
Period6/23/146/27/14

Fingerprint

Exoplanets
Binoculars
extrasolar planets
NASA
roads
Telescopes
Interferometer
Interferometers
Telescope
Dust
Star
Signature
Stars
interferometers
dust
Imaging
signatures
telescopes
Imaging techniques
stars

Keywords

  • debris disks
  • exoplanet detection
  • exozodiacal dust
  • infrared astronomy
  • nulling interferometry
  • stellar interferometry

ASJC Scopus subject areas

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

Cite this

Danchi, W., Bailey, V., Bryden, G., Defrère, D., Haniff, C., Hinz, P., ... Wyatt, M. (2014). The LBTI Hunt for Observable Signatures of Terrestrial Systems (HOSTS) survey: A key NASA science program on the road to exoplanet imaging missions. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 9146). [914607] SPIE. DOI: 10.1117/12.2056681

The LBTI Hunt for Observable Signatures of Terrestrial Systems (HOSTS) survey : A key NASA science program on the road to exoplanet imaging missions. / Danchi, W.; Bailey, V.; Bryden, G.; Defrère, D.; Haniff, C.; Hinz, P.; Kennedy, G.; Mennesson, B.; Millan-Gabet, R.; Rieke, G.; Roberge, A.; Serabyn, E.; Skemer, A.; Stapelfeldt, K.; Weinberger, A.; Wyatt, M.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9146 SPIE, 2014. 914607.

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

Danchi, W, Bailey, V, Bryden, G, Defrère, D, Haniff, C, Hinz, P, Kennedy, G, Mennesson, B, Millan-Gabet, R, Rieke, G, Roberge, A, Serabyn, E, Skemer, A, Stapelfeldt, K, Weinberger, A & Wyatt, M 2014, The LBTI Hunt for Observable Signatures of Terrestrial Systems (HOSTS) survey: A key NASA science program on the road to exoplanet imaging missions. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 9146, 914607, SPIE, Optical and Infrared Interferometry IV, Montreal, Canada, 6/23/14. DOI: 10.1117/12.2056681
Danchi W, Bailey V, Bryden G, Defrère D, Haniff C, Hinz P et al. The LBTI Hunt for Observable Signatures of Terrestrial Systems (HOSTS) survey: A key NASA science program on the road to exoplanet imaging missions. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9146. SPIE. 2014. 914607. Available from, DOI: 10.1117/12.2056681
Danchi, W. ; Bailey, V. ; Bryden, G. ; Defrère, D. ; Haniff, C. ; Hinz, P. ; Kennedy, G. ; Mennesson, B. ; Millan-Gabet, R. ; Rieke, G. ; Roberge, A. ; Serabyn, E. ; Skemer, A. ; Stapelfeldt, K. ; Weinberger, A. ; Wyatt, M./ The LBTI Hunt for Observable Signatures of Terrestrial Systems (HOSTS) survey : A key NASA science program on the road to exoplanet imaging missions. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9146 SPIE, 2014.
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abstract = "The Hunt for Observable Signatures of Terrestrial planetary Systems (HOSTS) program on the Large Binocular Telescope Interferometer (LBTI) will survey nearby stars for faint exozodiacal dust (exozodi). This warm circumstellar dust, analogous to the interplanetary dust found in the vicinity of the Earth in our own system, is produced in comet breakups and asteroid collisions. Emission and/or scattered light from the exozodi will be the major source of astrophysical noise for a future space telescope aimed at direct imaging and spectroscopy of terrestrial planets (exo-Earths) around nearby stars. About 20{\%} of nearby field stars have cold dust coming from planetesimals at large distances from the stars (Eiroa et al. 2013, A&A, 555, A11; Siercho et al. 2014, ApJ, 785, 33). Much less is known about exozodi; current detection limits for individual stars are at best ~ 500 times our solar system's level (aka. 500 zodi). LBTI-HOSTS will be the first survey capable of measuring exozodi at the 10 zodi level (3σ). Detections of warm dust will also reveal new information about planetary system architectures and evolution. We will describe the motivation for the survey and progress on target selection, not only the actual stars likely to be observed by such a mission but also those whose observation will enable sensible extrapolations for stars that will not be observed with LBTI. We briefly describe the detection of the debris disk around η Crv, which is the first scientific result from the LBTI coming from the commissioning of the instrument in December 2013, shortly after the first time the fringes were stabilized.",
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