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Archival Legacy Investigations of Circumstellar Environments: Overview and First Results

Choquet, Élodie and Pueyo, Laurent and Hagan, J. Brendan and Gofas-Salas, Elena and Rajan, Abhijith and Chen, Christine and Perrin, Marshall D. and Debes, John and Golimowski, David and Hines, Dean C. and N'Diaye, Mamadou and Schneider, Glenn and Mawet, Dimitri and Marois, Christian and Soummer, Rémi (2014) Archival Legacy Investigations of Circumstellar Environments: Overview and First Results. In: Space Telescopes and Instrumentation 2014. Proceedings of SPIE. No.9143. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 914357. ISBN 97808194961.

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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.

Item Type:Book Section
Related URLs:
URLURL TypeDescription Paper
Choquet, Élodie0000-0002-9173-0740
Pueyo, Laurent0000-0003-3818-408X
Perrin, Marshall D.0000-0002-3191-8151
Debes, John0000-0002-1783-8817
Hines, Dean C.0000-0003-4653-6161
N'Diaye, Mamadou0000-0002-1721-3294
Schneider, Glenn0000-0002-4511-5966
Mawet, Dimitri0000-0002-8895-4735
Marois, Christian0000-0002-4164-4182
Soummer, Rémi0000-0003-2753-2819
Additional Information:© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE). Date Published: 4 September 2014. This project was made possible by the Mikulski Archive for Space Telescopes (MAST) at STScI. Support was provided by NASA through grants HST-AR-12652.01 (PI: R. Soummer), HST-GO-11136.09-A (PI: D. Golimowski), and by STScI Director’s Discretionary Research funds, from STScI, which is operated by AURA under NASA contract NAS5- 26555. The input images to ALICE processing are from the recalibrated NICMOS data products produced by the Legacy Archive project, “A Legacy Archive PSF Library And Circumstellar Environments (LAPLACE) Investigation,” (HST-AR- 11279, PI: G. Schneider). Pueyo was supported in part under contract with the California Institute of Technology (Caltech) funded by NASA through the Sagan Fellowship Program executed by the NASA Exoplanet Science Institute. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France.
Funding AgencyGrant Number
NASANAS5- 26555
NASA Sagan Fellowship ProgramUNSPECIFIED
Subject Keywords:HST, NICMOS, Coronagraphy, Post-processing, debris disks, exoplanets
Series Name:Proceedings of SPIE
Issue or Number:9143
Record Number:CaltechAUTHORS:20150520-104945736
Persistent URL:
Official Citation:Élodie Choquet ; Laurent Pueyo ; J. Brendan Hagan ; Elena Gofas-Salas ; Abhijith Rajan, et al. " Archival legacy investigations of circumstellar environments: overview and first results ", Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 914357 (August 2, 2014); doi:10.1117/12.2056672;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57705
Deposited By: Ruth Sustaita
Deposited On:20 May 2015 18:35
Last Modified:10 Nov 2021 21:54

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