diskfit implements procedures for fitting non-axisymmetries in either kinematic or photometric data, as first described in Spekkens & Sellwood (2007) for velocity fields and Reese et al. (2007, SS07) for images. DiskFit supercedes velfit 2.0 in that it implements a refined version of that code to fit kinematics, and corresponds to the first public release of the image fitting code described in R07. DiskFit improves upon the functionality of velfit described in SS07 and Sellwood & Zanmar Sanches (2010) as well as that for image fitting described in R07, by carrying out an optional seeing correction for both kinematic and photometric fits.
Radial (m=0) flow can be fitted by setting flags(4) , whereas bisymmetric (m=2) or lobsided (m=1) flow with flags(5) (see flags= below). The code is usually not well converging when fitting both. For more details and a full explanation of the parameters, Spekkens and Sellwood (2007ApJ...664..204S) and the Users Guide on the DISKFIT website.
The current frontend is under development, the only reliably way to run the examples is via the inp= keyword.
ex 1a: rundiskfit inp=EXAMPLE/PHOT/phot_disk.inp ex 1b: rundiskfit inp=EXAMPLE/PHOT/phot_full.inp ex 2a: rundiskfit inp=EXAMPLE/VELS/FITS/velsf_disk.inp ex 2b: rundiskfit inp=EXAMPLE/VELS/FITS/velsf_bi.inp ex 3 : rundiskfit inp=EXAMPLE/VELS/TEXT/velst_err.inp
Note you have to run them from a directory where EXAMPLE is a subdirectory.
CPU/speed test1a test1b test2a test2b test3a core2d T7300 @ 2.0 GHz 4.3 220.6 15.4 7.6 45.2 "2007 linux laptop [v1.0]" i7/870 @ 2.93 GHz 2.1 463.7 8.6 4.8 27.9 "2010? linux desktop" i7/3770 @ 3.50 GHz 1.7 77.6 7.3 4.1 26.5 "2012 linux desktop" i7? mac @ x.x GHz 2.7 124.9 9.7 5.2 36.4 "2010? mac desktop" i7-3630QM @ 2.40GHz 2.3 144.5 1.0 6.0 29.2 "2014 linux laptop [v1.1]"
2007ApJ...664..204S (Spekkens & Sellwood, 2007) 2007AJ....133.2846R (Reese, Williams, Sellwood, Barnes & Powell 2007) 2012MNRAS..... (Kuzio de Naray, Arsenault, Spekkens, Sellwood, McDonald, Simon, Teuben 2012) WEBSITE: http://www.physics.rutgers.edu/~spekkens/velfit/ WEBSITE: https://www.physics.queensu.ca/Astro/people/Kristine_Spekkens/diskfit/
NEMO/usr/spekkens/velfit - original SS07 code/examples (see their WEBSITE) NEMOBIN/velfitss07 - SS07 executable (see also exe=) NEMO/src/image/rotcur - NEMO frontends
13-sep-2012 V1.0 : frontend for diskfit V1.0 (July/Aug 2012) PJT 7-aug-2014 V1.1 : various updates for V1.1 (May 2013) PJT
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