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    CLIcK: a Continuum and Line fItting Kit for circumstellar disks

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    Author
    Liu, Yao
    Pascucci, Ilaria cc
    Henning, Thomas cc
    Affiliation
    Univ Arizona, Lunar & Planetary Lab
    Issue Date
    2019-03-12
    Keywords
    protoplanetary disks
    radiative transfer
    astrochemistry
    line: formation
    
    Metadata
    Show full item record
    Publisher
    EDP SCIENCES S A
    Citation
    Liu, Y., Pascucci, I., & Henning, T. (2019). CLIcK: a Continuum and Line fItting Kit for circumstellar disks. Astronomy & Astrophysics, 623, A106.
    Journal
    ASTRONOMY & ASTROPHYSICS
    Rights
    © ESO 2019.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    Infrared spectroscopy with medium to high spectral resolution is essential to characterize the gas content of circumstellar disks. Unfortunately, conducting continuum and line radiative transfer of thermochemical disk models is too time-consuming to carry out large parameter studies. Simpler approaches using a slab model to fit continuum-subtracted spectra require the identification of either the global or local continuum. Continuum subtraction, particularly when covering a broad wavelength range, is challenging but critical in rich molecular spectra as hot (several hundreds K) molecular emission lines can also produce a pseudo continuum. In this work, we present CLIcK, a flexible tool to simultaneously fit the continuum and line emission. The continuum model presented by Dullemond, Dominik, and Natta, and a plane-parallel slab of gas in local thermodynamic equilibrium are adopted to simulate the continuum and line emission, respectively, both of them are fast enough for homogeneous studies of large disk samples. We applied CLIcK to fit the observed water spectrum of the AA Tau disk and obtained water vapor properties that are consistent with literature results. We also demonstrate that CLIcK properly retrieves the input parameters used to simulate the water spectrum of a circumstellar disk. CLIcK will be a versatile tool for the interpretation of future James Webb Space Telescope spectra.
    Note
    Open access journal.
    ISSN
    0004-6361
    1432-0746
    DOI
    10.1051/0004-6361/201834418
    Version
    Final published version
    Sponsors
    Natural Science Foundation of China [11503087]; Natural Science Foundation of Jiangsu Province of China [BK20181513]; National Aeronautics and Space Administration [NNX15AD94G]; NASA's Science Mission Directorate
    Additional Links
    https://www.aanda.org/10.1051/0004-6361/201834418
    ae974a485f413a2113503eed53cd6c53
    10.1051/0004-6361/201834418
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