Manticore
Version 2.0alpha
Physics of Molecular Clouds
|
Welcome to manticore! Manticore solves for the temperature and column density of molecular gas clouds given multi-wavelength infrared maps of the source. The data for each wavelength must be provided in a separate FITS file containing a single HDU (header-data unit), which must include at least the following keywords:
Keyword | Contents |
---|---|
BAND | band center (microns) |
BUNIT | map data units (MJy/sr) |
OBJECT | target object name |
TELESCOP | facility name |
These keywords should naturally be supplemented by coordinate system specifications CRVALn, CDELTn, etc., but these are merely copied to the output and not used during processing. Note also the following assumptions on input maps:
MJy/sr
.Manticore requires detailed knowledge of the detector bandpass response to process data, encapsulated in the Detector class. The following detectors are supported:
Adding support for a new detector requires creation of a new concrete class and updating logic in solve.cc to associate it with an input map as appropriate.
Calculations support the use of arbitrary dust opacity models, as encapsulated by the Dust class. Tabular models must be compiled into the program by adding the table to Dust.cc and updating dust::modelMap accordingly. Dust models should be specified for a gas-to-dust ratio of 100.
Manticore is a simple command line utility. To see the full list of program options, run manticore -vh
(or --verbose --help
). At the time of writing, the output was:
Manticore version 1.2, released Aug 18 2018. Usage: manticore [OPTIONS] BAND1.fits BAND2.fits BAND3.fits [...] Options: -2, --two-param Fit two parameter dust emission model (default). (Single-temperature cloud model.) -3, --three-param Fit three parameter dust emission model (default: two-param). (Two-temperature cloud model with prescribed halo temperature.) -4, --four-param Fit four parameter dust emission model (default: two-param). (Two-temperature cloud model, all parameters free.) -A, --accuracy=RELERR Maximum relative error for least-squares fit (default: 1e-2). -a, --abs-diff Output absolute differences in delta maps (default: sigma-relative). -B, --no-band-output Do not append input band data to output FITS file. -C, --check Generate comparative PACS color correction tables and exit. -c, --chi2-max=CHI2 Maximum chi^2/DOF for meaningful 2-param result (default: 1.0). -D, --dust-model=NAME Dust opacity model (default: OH5). (Available models: OH5) -e, --error-map=FILE Input FITS error map (BAND and TELESCOP keys must match parent image). -E, --error-pct=PCT Percent flux error when error map unavailable (default: 3.0). -F, --force Force overwrite of existing files. -g, --gas-to-dust=RATIO Gas-to-dust ratio (default: 100.0). -h, --help Display command line help summary and exit. -l, --log-file=FILE Redirect log output to FILE (default is stderr). -M, --model-map Replace input data with model observation grid. -m, --max-iterations=NMAX Maximum least-squares iterations per pixel (default: 25). -n, --num-bands=NMIN Minimum number of bands required for least-squares fit (default: 3). -o, --output-file=FILE Output result to FITS file FILE (default: mtcore.fits). -p, --point-source Use point source detector response (default is extended sources). -q, --quiet Quiet mode; decrement logging level (opposite of -v). (Specify multiple times for added effect.) -s, --single-temp=FILE FITS output file from the single-temperature (2-param) fit. -T, --temp0=T0 Initial guess for (halo) temperature in Kelvin (default: 16.5). -t, --threads=NTHREADS Use NTHREADS threads for processing (default: 1). -v, --verbose Verbose mode; increment logging level (opposite of -q). (Specify multiple times for added effect.) -V, --version Display program version and exit.
Doxyfile
will use it; otherwise, a web link will be used (hence requiring live web access to see equations in the documentation).To compile, just type make
and make docs
. The manticore
executable will be in the top-level directory, documentation in html/.