Sökning: WFRF:(Christiaens Olivier) >
VIP: Vortex Image P...
VIP: Vortex Image Processing Package for High-contrast Direct Imaging
-
- Gonzalez, Carlos Alberto Gomez (författare)
- Univ Liege, Space Sci Technol & Astrophys Res STAR Inst, Allee Six Aout 19c, B-4000 Liege, Belgium
-
- Wertz, Olivier (författare)
- Univ Liege, Space Sci Technol & Astrophys Res STAR Inst, Allee Six Aout 19c, B-4000 Liege, Belgium
-
- Absil, Olivier (författare)
- Univ Liege, Space Sci Technol & Astrophys Res STAR Inst, Allee Six Aout 19c, B-4000 Liege, Belgium
-
visa fler...
-
- Christiaens, Valentin (författare)
- Univ Liege, Space Sci Technol & Astrophys Res STAR Inst, Allee Six Aout 19c, B-4000 Liege, Belgium.; Univ Chile, Dept Astron, Santiago, Chile.; Millennium Nucleus Protoplanetary Disks, Santiago, Chile
-
- Defrère, Denis (författare)
- Univ Liege, Space Sci Technol & Astrophys Res STAR Inst, Allee Six Aout 19c, B-4000 Liege, Belgium
-
- Mawet, Dimitri (författare)
- CALTECH, Dept Astron, Pasadena, CA 91125 USA.; Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA
-
- Milli, Julien (författare)
- European Southern Observ, Santiago, Chile
-
- Absil, Pierre-Antoine (författare)
- Catholic Univ Louvain, Dept Math Engn, B-1348 Louvain La Neuve, Belgium
-
- Van Droogenbroeck, Marc (författare)
- Univ Liege, Inst Montefiore, B-4000 Liege, Belgium
-
- Cantalloube, Faustine (författare)
- CNRS, IPAG, F-38000 Grenoble, France.; Off Natl Etud & Rech Aerosp, Opt Dept, BP 72, F-92322 Chatillon, France
-
- Hinz, Philip (författare)
- Univ Arizona, Dept Astron, Steward Observ, 933 N Cherry Ave, Tucson, AZ 85721 USA
-
- Skemer, Andrew (författare)
- Univ Calif Santa Cruz, 1156 High St, Santa Cruz, CA 95064 USA
-
- Karlsson, Mikael (författare)
- Uppsala universitet,Tillämpad materialvetenskap
-
- Surdej, Jean (författare)
- Univ Liege, Space Sci Technol & Astrophys Res STAR Inst, Allee Six Aout 19c, B-4000 Liege, Belgium
-
visa färre...
-
Univ Liege, Space Sci Technol & Astrophys Res STAR Inst, Allee Six Aout 19c, B-4000 Liege, Belgium Univ Liege, Space Sci Technol & Astrophys Res STAR Inst, Allee Six Aout 19c, B-4000 Liege, Belgium; Univ Chile, Dept Astron, Santiago, Chile.; Millennium Nucleus Protoplanetary Disks, Santiago, Chile (creator_code:org_t)
- 2017-06-12
- 2017
- Engelska.
-
Ingår i: Astronomical Journal. - : American Astronomical Society. - 0004-6256 .- 1538-3881. ; 154:1
- Relaterad länk:
-
https://repository.a...
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.3...
-
visa färre...
Abstract
Ämnesord
Stäng
- We present the Vortex Image Processing (VIP) library, a python package dedicated to astronomical high-contrast imaging. Our package relies on the extensive python stack of scientific libraries and aims to provide a flexible framework for high-contrast data and image processing. In this paper, we describe the capabilities of VIP related to processing image sequences acquired using the angular differential imaging (ADI) observing technique. VIP implements functionalities for building high-contrast data processing pipelines, encompassing pre- and post-processing algorithms, potential source. position and flux estimation, and sensitivity curve. generation. Among the reference point-spread. function subtraction techniques for ADI post-processing, VIP includes several flavors of principal component analysis (PCA) based algorithms, such as annular PCA and incremental PCA algorithms capable of processing big datacubes (of several gigabytes) on a computer with limited memory. Also, we present a novel ADI algorithm based on non-negative matrix factorization, which comes from the same family of low-rank matrix approximations as PCA and provides fairly similar results. We showcase the ADI capabilities of the VIP library using a deep sequence on HR 8799 taken with the LBTI/LMIRCam and its recently commissioned L-band vortex coronagraph. Using VIP, we investigated the presence of additional companions around HR 8799 and did not find any significant additional point source beyond the four known planets. VIP is available at http://github. com/vortex-exoplanet/VIP and is accompanied with Jupyter notebook tutorials illustrating the main functionalities of the library.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
Gonzalez, Carlos ...
-
Wertz, Olivier
-
Absil, Olivier
-
Christiaens, Val ...
-
Defrère, Denis
-
Mawet, Dimitri
-
visa fler...
-
Milli, Julien
-
Absil, Pierre-An ...
-
Van Droogenbroec ...
-
Cantalloube, Fau ...
-
Hinz, Philip
-
Skemer, Andrew
-
Karlsson, Mikael
-
Surdej, Jean
-
visa färre...
- Om ämnet
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Fysik
-
och Astronomi astrof ...
- Artiklar i publikationen
-
Astronomical Jou ...
- Av lärosätet
-
Uppsala universitet