Archival legacy investigations of circumstellar environments: Overview and first results

Élodie Choquet, Laurent Pueyo, J. Brendan Hagan, Elena Gofas-Salas, Abhijith Rajan, Christine Chen, Marshall D. Perrin, John Debes, David Golimowski, Dean C. Hines, Mamadou N'Diaye, Glenn Schneider, Dimitri Mawet, Christian Marois, Rémi Soummer

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

23 Scopus citations

Abstract

We are currently conducting a comprehensive and consistent re-processing of archival HST-NICMOS coronagraphic surveys using advanced PSF subtraction methods, entitled the Archival Legacy Investigations of Circumstellar Environments program (ALICE, HST/AR 12652). This virtual campaign of about 400 targets has already produced numerous new detections of previously unidentified point sources and circumstellar structures. We present five newly spatially resolved debris disks revealed in scattered light by our analysis of the archival data. These images provide new views of material around young solar-type stars at ages corresponding to the period of terrestrial planet formation in our solar system. We have also detected several new candidate substellar companions, for which there are ongoing followup campaigns (HST/WFC3 and VLT/SINFONI in ADI mode). Since the methods developed as part of ALICE are directly applicable to future missions (JWST, AFTA coronagraph) we emphasize the importance of devising optimal PSF subtraction methods for upcoming coronagraphic imaging missions. We describe efforts in defining direct imaging high-level science products (HLSP) standards that can be applicable to other coronagraphic campaigns, including ground-based (e.g., Gemini Planet Imager), and future space instruments (e.g., JWST). ALICE will deliver a first release of HLSPs to the community through the MAST archive at STScI in 2014.

Original languageEnglish (US)
Title of host publicationSpace Telescopes and Instrumentation 2014
Subtitle of host publicationOptical, Infrared, and Millimeter Wave
EditorsJacobus M. Oschmann, Mark Clampin, Howard A. MacEwen, Giovanni G. Fazio
PublisherSPIE
ISBN (Electronic)9780819496119
DOIs
StatePublished - 2014
Externally publishedYes
EventSpace Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave - Montreal, Canada
Duration: Jun 22 2014Jun 27 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9143
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherSpace Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave
Country/TerritoryCanada
CityMontreal
Period6/22/146/27/14

Keywords

  • Coronagraphy
  • Debris disks
  • Exoplanets
  • HST
  • NICMOS
  • Post-processing

ASJC Scopus subject areas

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

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