pyspeckit: A spectroscopic analysis and plotting package

Abstract

pyspeckit is a toolkit and library for spectroscopic analysis in Python. We describe the pyspeckit package and highlight some of its capabilities, such as interactively fitting a model to data, akin to the historically widely-used splot function in IRAF. pyspeckit employs the Levenberg-Marquardt optimization method via the mpfit and lmfit implementations, and important assumptions regarding error estimation are described here. Wrappers to use pymc and emcee as optimizers are provided. A parallelized wrapper to fit lines in spectral cubes is included. As part of the astropy affiliated package ecosystem, pyspeckit is open source and open development and welcomes input and collaboration from the community.

arXiv commentVersion 1.0 of pyspeckit is released alongside this paper; https://pyspeckit.readthedocs.io/en/latest/

References in corpus (15)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• Array Programming with NumPy
• Astropy: A Community Python Package for Astronomy
• emcee: The MCMC Hammer
• The NumPy array: a structure for efficient numerical computation
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• astroquery: An Astronomical Web-Querying Package in Python
• How to Calculate Molecular Column Density
• Molecular gas kinematics within the central 250 pc of the Milky Way
• The Green Bank Ammonia Survey (GAS): First Results of NH3 mapping the Gould Belt
• eXtended CASA Line Analysis Software Suite (XCLASS)
• 'The Brick' is not a brick: A comprehensive study of the structure and dynamics of the Central Molecular Zone cloud G0.253+0.016
• Representations of spectral coordinates in FITS
• Probabilistic detection of spectral line components
• The Orion fingers: Near-IR spectral imaging of an explosive outflow

Cited by in corpus (35)

• Mother of Dragons: A Massive, quiescent core in the dragon cloud (IRDC G028.37+00.07)
• The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). VI. The core-scale CO-depletion
• Flow of gas detected from beyond the filaments to protostellar scales in Barnard 5
• The ALMA Survey of 70 $\mu \mathrm{m}$ Dark High-mass Clumps in Early Stages (ASHES). VII: Chemistry of Embedded Dense Cores
• Kinematics and stability of high-mass protostellar disk candidates at sub-arcsecond resolution -- Insights from the IRAM NOEMA large program CORE
• ALMA-IMF. VII. First release of the full spectral line cubes: Core kinematics traced by DCN J=(3-2)
• Salt-bearing disk candidates around high-mass young stellar objects
• ALMA-IMF XIII: N${}_2$H${}^{+}$ kinematic analysis on the intermediate protocluster G353.41
• High-energy spectra of LTT 1445A and GJ 486 reveal flares and activity
• Nitrogen fractionation in ammonia and its insights on nitrogen chemistry
• PRODIGE -- envelope to disk with NOEMA. IV. An infalling gas bridge surrounding two Class 0/I systems in L1448N
• Similar levels of deuteration in the pre-stellar core L1544 and the protostellar core HH211
• Turbulence and Accretion: a High-resolution Study of the B5 Filaments
• ALMA-IMF XVIII: The assembly of a star cluster: Dense N${}_2$H${}^{+}$ (1-0) kinematics in the massive G351.77 protocluster
• JWST reveals widespread CO ice and gas absorption in the Galactic Center cloud G0.253+0.016
• Intermediate-Mass Black Holes in Green Pea Galaxies (IMBH-GP) I: a Candidate Sample from LAMOST and SDSS
• FAUST X: Formaldehyde in the Protobinary System [BHB2007] 11: Small Scale Deuteration
• Cosmic-ray ionisation rate in low-mass cores: the role of the environment
• Evidence for an interaction between the Galactic Center clouds M0.10-0.08 and M0.11-0.11
• Core Revelations: the Star Formation and AGN Connection at the Heart of NGC 7469
• Nascent chemical complexity in prestellar core IRAS 16293E: complex organics and deuterated methanol
• Mapping Synthetic Observations to Prestellar Core Models: An Interpretable Machine Learning Approach
• ANTIHEROES-PRODIGE: Quantifying the connection from envelope to disk with the IRAM 30m telescope and NOEMA I. Attack of the streamers: L1448N's fight for order in the chaos
• Physical Conditions of the Ionized Superwind in NGC 253 with VLT/MUSE
• Massive dusty multiphase outflow in local merger shows no sign of slowing on kiloparsec scales
• H$\alpha$ emission line sources from VLT-MUSE in a low-metallicity star forming region -- Dolidze 25
• Deuterium fractionation in cold dense cores in the low-mass star forming region L1688
• Asymmetric accretion through a streamer onto the pre-stellar core H-MM1
• First Detections of PN, PO, and PO+ toward a Shocked Low-mass Starless Core
• The Nearby Evolved Stars Survey III: First data release of JCMT CO-line observations
• A persistent bow shock in a diskless magnetised accreting white dwarf
• SPAN: A cross-platform Python GUI software for optical and near-infrared spectral analysis
• c-C3H2 deuteration towards prestellar and starless cores in the Perseus Molecular Cloud
• Higher resolution optical spectra of $M_{\ast }<10^{10}{M}_{\odot }$ galaxies reveal outflow signatures unresolved by the SDSS
• Deuterium fractionation and CO depletion in Barnard 5