2.4 Tools

The tools section hosts several tools that can work with the spectroscopic data of selected species [see Selection]. Output generated by these tools are collated in the Results section. Running a tool will automatically forward users there. The tools section is organized into several groups, which are discussed in turn. A screenshot of the tools section is shown below.

Screenshot of the Tools section

2.4.1 General

The general group contains controls that are applicable to most tools. These include setting the desired spectral range using either frequency or wavelength units, the line profile used for convolving the bands and the emission model to use, if any. Clicking Set defaults returns the setting back to their original values.

2.4.2 Co-add

Co-add sums the spectra of the selected species [see Selection] together into a single spectrum using a weighting scheme that can be set using the drop down menu. Clicking Co-add executes the tool and automatically forwards the user to the Results section.

2.4.3 Stack

The stack tool will vertically stack the spectra of at most 10 selected species [see Selection]. Clicking Stack executes the tool and automatically forwards the user to the Results section.

2.4.4 Spectral fit

Spectral fit performs a non-negative least-squares fit to the provided spectrum using the spectra of the selected species [see Selection]. Acceptable input file formats are two-column ASCII (wavelength, flux), VOTABLE, and ISO/Spitzer-YAAR. The user can set the amount to shift the database spectra to the red, which can help mimic some anharmonic effects. Clicking Fit executes the tool and automatically forwards the user to the Results section.

2.4.5 Temperature stack

Temperature stack stacks the spectra of a single species modeled at up to five different temperatures. The drop down menu is used to set the species and the text boxes are used to set the temperatures. Clicking Stack executes the tool and automatically forwards the user to the Results section.