Open Access
Table 3
Description of the Columns in the Primary Cluster Catalog FITS File.
| Column | Units | Description |
|---|---|---|
| The primary galaxy clusters and groups catalog | ||
| DETUID | Unique X-ray detection no. This column should be used for matching sources with the main eRASS1 X-ray catalog by Merloni et al. (2024) | |
| Name | Cluster Name in the IAU format | |
| RA | degrees (J2000) | RA of the X-ray detection |
| Dec | degrees (J2000) | Dec of the X-ray detection |
| RA_XFIT | degrees (J2000) | RA of the cluster after the image is fit with MBProj2D |
| Dec_XFIT | degrees (J2000) | Dec in degrees (J2000) of cluster after the image is fit with MBProj2D |
| 𝓛ext | Extent likelihood of the X-ray detection by ermldet | |
| 𝓛det | Detection likelihood of the X-ray detection by ermldet | |
| Exp. | Average exposure in seconds | |
| zbest | Best available cluster redshift. Spectroscopic, or photometric, or literature values (see Kluge et al. 2024, for details) | |
| Pcont | Probability of the detection being contamination assigned by the mixture model | |
| CR [300 kpc, R500] | Counts s−1 | Count rate in 0.2–2.3 keV within 300 kpc and R500 |
| CTS [300 kpc, R500] | Counts | Total X-ray counts in 0.2–2.3 keV within 300 kpc and R500 |
| FX [300 kpc, R500] | ergs s−1 cm−2 | X-ray flux in 0.2–2.3 keV within 300 kpc and R500 |
| LX [300 kpc, R500] | ergs s−1 | Integrated X-ray luminosity in 0.2–2.3 keV within 300 kpc and R500 |
| CR0520 [300 kpc, R500] | Counts s−1 | Count Rate in 0.5–2.0 keV within 300 kpc and R500 |
| CTS0520 [300 kpc, R500] | Counts | Total X-ray counts in 0.5–2.0 keV within 300 kpc and R500 |
| F0520 [300 kpc, R500] | ergs s−1 cm−2 | X-ray Flux in 0.5–2.0 keV within 300 kpc and R500 |
| L0520 [300 kpc, R500] | ergs s−1 | Integrated X-ray LUMINOSITY in 0.5–2.0 keV within 300 kpc and R500 |
| Lbol [R500] | ergs s−1 | Bolometric luminosity within R500 |
| kT | keV | ICM temperature |
 |
Msun | Calibrated cluster gas mass within R500 |
 |
Msun× keV | The mass proxy in R500 |
| M500 | Msun | Cluster total mass |
| M500_PDF_array | Msun | PDF of cluster total mass |
| fgas,500 | Cluster gas mass fraction | |
| R500 | kpc | Overdensity radius |
| Match name | Name of the cluster if matched to a known confirmed source within 2′ radius | |
| The cosmology sample | ||
| zλ | Photometric redshift of the cluster based on the LS DR10 data | |
| CR | Counts s−1 | Count rate measured at zΛ |
| LX | ergs s−1 | Integrated X-ray luminosity within R500 at zΛ |
| kT | keV | ICM temperature at zΛ |
| Mgas | Msun | Cluster gas mass within R500 at zλ |
| YX | Msun× keV | The mass proxy in R500 at zλ |
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