SPAM Help Document

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Opening a File

The program requires two files to be able to run. One is the photometry catalog of all the sources in the field being examined which can be found in that fields data directory (~/images/$fielddirectory) It should have the name phot_2MASS.all. This file must be in working directory. The second file is the list of YSOs and their best model fits. This file is created from the "generic_ex2.f90" provided in the SED fitter package. To open both these file, go to the file menu and select open. You will need to select the file with all the YSOs and their best fits (phot_2MASS.all will open automatically at this point).

Picking and Displaying a Source

The left display panel shows the positional relationship between all YSOs. In order to display the model fit data for a given source on the right display panel, simply click on the source of interest in the left panel. Information about this source will be provided directly underneath.

Displaying Model Parameters is 1,2,3 and 4-D.

There are four data axes: x, y, z and color. 2,3 and 4-D viewing can be done by selecting each axis radio button then selecting the parameter to be displayed on that axis from the list of parameters on the right side. In order to view the z axis, right-click and drag the mouse to rotate the viewing angle. In order to view a histogram (1-D) set the parameter on the axis to the one of interest then select show histogram in the options menu.


The user may also choose to do a clustering analysis on the model parameters for any given source. In order to do this, simply select the color axis and select the "Cluster" parameter option. A k-means clustering algorithm will then be performed on the PCA (principle component analysis) processed data and each cluster will be shown in a different color. The user may also select the number of clusters to be used.

Spatial Relationships of Parameters

This option can be used to see spatial relationships such as mass and luminosity segregation in the cluster. The default setting for this option is to show the distribution of the mass of the central source (MASSC). In order to view a different parameter, select the Spatial radio button from the axis options, then select the parameter to display from the list of parameters. This analysis picks the average value of the parameter from all the fits and displays it as a color in the left display window.