# Summary

Available files are:

* 2D NIR spectrum, as relevant for the kinematic analysis
* The 1D extracted spectrum including data from UVB & VIS & NIR arm, as
  relevant for the stellar population fitting.

# Individual files
## 2D NIR spectrum

This is the unbinned 2D NIR spectrum: `toft_et_al_macs2129_1_nir_2d.fits`
Based on this spectrum the pPXF fits were determined.
*  Note: we binned the spectrum for the pPXF analysis.
*  Warning: The pixels are correlated. Therefore, we corrected the
   noise-spectrum after binning before running our pPXF analysis scripts;
   see note in paper)

The fits file has four extensions.

| No. | Name        | Description                                                          | Type                         | Dimensions  | Format  |
|:----|:------------|:---------------------------------------------------------------------|:-----------------------------|:------------|:--------|
| 0   | DATA        | Flux density map [erg/s/cm2/Angstrom]                                | PrimaryHDU (with Image data) | (24750, 61) | float64 |
| 1   | SIGMA       | Noise map (standard deviation) [erg/s/cm2/Angstrom] (pipeline based) | ImageHDU                     | (24750, 61) | float64 |
| 2   | QUAL        | Quality Flag (0: good, 99: bad)                                      | ImageHDU                     | (24750, 61) | int64   |
| 3   | EFF_EXPTIME | Effective exposure time contributing to each pixel [s] (1)           | ImageHDU                     | (24750, 61) | float64 |

(1): Varies from pixel to pixel, as the individual nodding pairs were
combined as a weighted average.

## 1D spectrum (UVB + VIS + NIR)

This spectrum incorporates the data from all UVB, VIS, and NIR arm. It
was used for the stellar population fitting described in the paper. The
extracted spectrum (corrected for the wavelength depedence of slit-loss)
was scaled by a constant factor to match the CLASH broadband photometry.

Two version of the spectrum are available for download:


| filename                                    | comment                                                                                               |
|:--------------------------------------------|:------------------------------------------------------------------------------------------------------|
| toft_et_al_macs2129_1_full_9_6A.txt         | binned to 9.6A (observed; 3A rest)  (as used in stellar pop. fitting)                                 |
| toft_et_al_macs2129_1_full_adpative_bin.txt | adaptively binned in wavelength for equal S/N (used for visulization purposes only as used in Fig. 1) |