iSLAT: the Interactive Spectral-Line Analysis Tool for JWST and beyond
arxiv(2024)
摘要
We present iSLAT (the Interactive Spectral-Line Analysis Tool), a
python-based graphical tool that allows users to interactively explore and
manually fit line emission observed in molecular spectra. iSLAT adopts a simple
slab model that simulates emission spectra with a small set of parameters
(temperature, emitting area, column density, and line broadening) that users
can adjust in real time for multiple molecules or multiple thermal components
of a same molecule. A central feature of iSLAT is the possibility to
interactively inspect individual lines or line clusters to visualize their
properties at high resolution and identify them in the population diagram.
iSLAT provides a number of additional features, including the option to
identify lines that are not blended at the instrumental resolution, the
possibility to save custom line lists selected by the user, and to fit and
measure their properties (line flux, width, and centroid) for later analysis.
In this paper we launch the tool and demonstrate it on infrared spectra from
the James Webb Space Telescope and ground-based instruments that provide higher
resolving power. We also share curated line lists that are useful for the
analysis of the forest of water emission lines observed from protoplanetary
disks. iSLAT is shared with the community on GitHub.
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