eRASS1_Hard.v1.0.fitsContent of the page.
Catalogue table
| Name | Type | Unit | Description |
|---|---|---|---|
| IAUNAME | char[23] | None | String containing the official IAU name of the source |
| DETUID | char[32] | None | String unique detection ID |
| SKYTILE | int32 | None | Sky tile ID |
| ID_SRC | int32 | None | Source ID in each sky tile. Use SKYTILE+ID_SRC to identify the corresponding source products |
| UID | int64 | None | Integer unique detection ID. It equals CatID*10^11+SKYTILE*10^5+ID_SRC, where catID is 1 for the 1B detected Main and Supp catalogs and 2 for the 3B detected Hard catalog |
| UID_1B | int64 | None | 1B catalog UID of the source with a strong association, or -UID if the association is weak |
| ID_CLUSTER | int32 | None | Group ID of simultaneously fitted sources |
| RA | float64 | deg | Right ascension (ICRS), corrected |
| DEC | float64 | deg | Declination (ICRS), corrected |
| RA_RAW | float64 | deg | Right ascension (ICRS), uncorrected |
| DEC_RAW | float64 | deg | Declination (ICRS), uncorrected |
| RA_LOWERR | float32 | arcsec | 1-sigma lower error on RA |
| RA_UPERR | float32 | arcsec | 1-sigma upper error on RA |
| DEC_LOWERR | float32 | arcsec | 1-sigma lower error on DEC |
| DEC_UPERR | float32 | arcsec | 1-sigma upper error on DEC |
| POS_ERR | float32 | arcsec | 1-sigma positional uncertainty |
| RADEC_ERR | float32 | arcsec | Combined positional error, raw output from PSF fitting |
| LII[1] | float64 | deg | Galactic longitude |
| BII[1] | float64 | deg | Galactic latitude |
| ELON | float64 | deg | Ecliptic longitude |
| ELAT | float64 | deg | Ecliptic latitude |
| MJD | float32 | d | Modified Julian Date of the observation of the source nearest to the optical axis of the telescope |
| MJD_MIN | float32 | d | Modified Julian Date of the first observation of the source |
| MJD_MAX | float32 | d | Modified Julian Date of the last observation of the source |
| EXT | float32 | arcsec | Source Extent Parameter |
| EXT_ERR | float32 | arcsec | 1-sigma error on EXT |
| EXT_LOWERR | float32 | arcsec | 1-sigma lower error on EXT |
| EXT_UPERR | float32 | arcsec | 1-sigma upper error on EXT |
| EXT_LIKE | float32 | None | Extent likelihood |
| ML_CTS_0 | float32 | count | Source net counts in 0.2-5.0 keV band |
| ML_CTS_ERR_0 | float32 | count | 1-sigma combined counts error in 0.2-5.0 keV band |
| ML_RATE_0 | float32 | count s-1 | Source count rate in 0.2-5.0 keV band |
| ML_RATE_ERR_0 | float32 | count s-1 | 1-sigma combined count rate error in 0.2-5.0 keV band |
| ML_FLUX_0 | float32 | erg s-1 cm-2 | Source flux in 2.3-5.0 keV band |
| ML_FLUX_ERR_0 | float32 | erg s-1 cm-2 | 1-sigma combined error on flux in 0.2-5.0 keV band |
| DET_LIKE_0 | float32 | None | Detection likelihood in 0.2-5.0 keV band |
| ML_BKG_0 | float32 | arcmin-2 | Background at the source position in the 0.2-5.0 keV band |
| ML_CTS_1 | float32 | count | Source net counts in 0.2-0.6 keV band |
| ML_CTS_ERR_1 | float32 | count | 1-sigma combined counts error in 0.2-0.6 keV band |
| ML_CTS_LOWERR_1 | float32 | count | 1-sigma lower counts error in 0.2-0.6 keV band |
| ML_CTS_UPERR_1 | float32 | count | 1-sigma upper counts error in 0.2-0.6 keV band |
| ML_RATE_1 | float32 | count s-1 | Source count rate in 0.2-0.6 keV band |
| ML_RATE_ERR_1 | float32 | count s-1 | 1-sigma combined count rate error in 0.2-0.6 keV band |
| ML_RATE_LOWERR_1 | float32 | count s-1 | 1-sigma lower count rate error in 0.2-0.6 keV band |
| ML_RATE_UPERR_1 | float32 | count s-1 | 1-sigma upper count rate error in 0.2-0.6 keV band |
| ML_FLUX_1 | float32 | erg s-1 cm-2 | Source flux in 0.2-0.6 keV band |
| ML_FLUX_ERR_1 | float32 | erg s-1 cm-2 | 1-sigma combined error on flux in 0.2-0.6 keV band |
| ML_FLUX_LOWERR_1 | float32 | erg s-1 cm-2 | 1-sigma lower error on flux in 0.2-0.6 keV band |
| ML_FLUX_UPERR_1 | float32 | erg s-1 cm-2 | 1-sigma upper error on flux in 0.2-0.6 keV band |
| DET_LIKE_1 | float32 | None | Detection likelihood in 0.2-0.6 keV band |
| ML_BKG_1 | float32 | arcmin-2 | Background at the source position in the 0.2-0.6 keV band |
| ML_EXP_1 | float32 | s | Vignetted exposure time at the source position in 0.2-0.6 keV band |
| ML_EEF_1 | float32 | None | Enclosed energy fraction in 0.2-0.6 keV band |
| APE_CTS_1 | int32 | count | Total counts extracted within the aperture in 0.2-0.6 keV band |
| APE_BKG_1 | float32 | count | Background counts extracted within the aperture in 0.2-0.6 keV band, excluding nearby sources using the source map |
| APE_EXP_1 | float32 | s | Exposure map value in 0.2-0.6 keV band at the given position |
| APE_RADIUS_1 | float32 | pix | Extraction radius in pixels (4'') in the 0.2-0.6 keV band |
| APE_POIS_1 | float32 | None | Poisson probability that the extracted counts (APE_CTS_1) are a background fluctuation |
| ML_CTS_2 | float32 | count | Source net counts in 0.6-2.3 keV band |
| ML_CTS_ERR_2 | float32 | count | 1-sigma combined counts error in 0.6-2.3 keV band |
| ML_CTS_LOWERR_2 | float32 | count | 1-sigma lower counts error in 0.6-2.3 keV band |
| ML_CTS_UPERR_2 | float32 | count | 1-sigma upper counts error in 0.6-2.3 keV band |
| ML_RATE_2 | float32 | count s-1 | Source count rate in 0.6-2.3 keV band |
| ML_RATE_ERR_2 | float32 | count s-1 | 1-sigma combined count rate error in 0.6-2.3 keV band |
| ML_RATE_LOWERR_2 | float32 | count s-1 | 1-sigma lower count rate error in 0.6-2.3 keV band |
| ML_RATE_UPERR_2 | float32 | count s-1 | 1-sigma upper count rate error in 0.6-2.3 keV band |
| ML_FLUX_2 | float32 | erg s-1 cm-2 | Source flux in 0.6-2.3 keV band |
| ML_FLUX_ERR_2 | float32 | erg s-1 cm-2 | 1-sigma combined error on flux in 0.6-2.3 keV band |
| ML_FLUX_LOWERR_2 | float32 | erg s-1 cm-2 | 1-sigma lower error on flux in 0.6-2.3 keV band |
| ML_FLUX_UPERR_2 | float32 | erg s-1 cm-2 | 1-sigma upper error on flux in 0.6-2.3 keV band |
| DET_LIKE_2 | float32 | None | Detection likelihood in 0.6-2.3 keV band |
| ML_BKG_2 | float32 | arcmin-2 | Background at the source position in the 0.6-2.3 keV band |
| ML_EXP_2 | float32 | s | Vignetted exposure time at the source position in 0.6-2.3 keV band |
| ML_EEF_2 | float32 | None | Enclosed energy fraction in 0.6-2.3 keV band |
| APE_CTS_2 | int32 | count | Total counts extracted within the aperture in 0.6-2.3 keV band |
| APE_BKG_2 | float32 | count | Background counts extracted within the aperture in 0.6-2.3 keV band, excluding nearby sources using the source map |
| APE_EXP_2 | float32 | s | Exposure map value in 0.6-2.3 keV band at the given position |
| APE_RADIUS_2 | float32 | pix | Extraction radius in pixels (4'') in the 0.6-2.3 keV band |
| APE_POIS_2 | float32 | None | Poisson probability that the extracted counts (APE_CTS_2) are a background fluctuation |
| ML_CTS_3 | float32 | count | Source net counts in 2.3-5.0 keV band |
| ML_CTS_ERR_3 | float32 | count | 1-sigma combined counts error in 2.3-5.0 keV band |
| ML_CTS_LOWERR_3 | float32 | count | 1-sigma lower counts error in 2.3-5.0 keV band |
| ML_CTS_UPERR_3 | float32 | count | 1-sigma upper counts error in 2.3-5.0 keV band |
| ML_RATE_3 | float32 | count s-1 | Source count rate in 2.3-5.0 keV band |
| ML_RATE_ERR_3 | float32 | count s-1 | 1-sigma combined count rate error in 2.3-5.0 keV band |
| ML_RATE_LOWERR_3 | float32 | count s-1 | 1-sigma lower count rate error in 2.3-5.0 keV band |
| ML_RATE_UPERR_3 | float32 | count s-1 | 1-sigma upper count rate error in 2.3-5.0 keV band |
| ML_FLUX_3 | float32 | erg s-1 cm-2 | Source flux in 2.3-5.0 keV band |
| ML_FLUX_ERR_3 | float32 | erg s-1 cm-2 | 1-sigma combined error on flux in 2.3-5.0 keV band |
| ML_FLUX_LOWERR_3 | float32 | erg s-1 cm-2 | 1-sigma lower error on flux in 2.3-5.0 keV band |
| ML_FLUX_UPERR_3 | float32 | erg s-1 cm-2 | 1-sigma upper error on flux in 2.3-5.0 keV band |
| DET_LIKE_3 | float32 | None | Detection likelihood in 2.3-5.0 keV band |
| ML_BKG_3 | float32 | arcmin-2 | Background at the source position in the 2.3-5.0 keV band |
| ML_EXP_3 | float32 | s | Vignetted exposure time at the source position in 2.3-5.0 keV band |
| ML_EEF_3 | float32 | None | Enclosed energy fraction in 2.3-5.0 keV band |
| APE_CTS_3 | int32 | count | Total counts extracted within the aperture in 2.3-5.0 keV band |
| APE_BKG_3 | float32 | count | Background counts extracted within the aperture in 2.3-5.0 keV band, excluding nearby sources using the source map |
| APE_EXP_3 | float32 | s | Exposure map value in 2.3-5.0 keV band at the given position |
| APE_RADIUS_3 | float32 | pix | Extraction radius in pixels (4'') in the 2.3-5.0 keV band |
| APE_POIS_3 | float32 | None | Poisson probability that the extracted counts (APE_CTS_3) are a background fluctuation |
| FLAG_SP_SNR | int16 | None | Source may lie within an overdense region near a supernova remnant |
| FLAG_SP_BPS | int16 | None | Source may lie within an overdense region near a bright point source |
| FLAG_SP_SCL | int16 | None | Source may lie within an overdense region near a stellar cluste |
| FLAG_SP_LGA | int16 | None | Source may lie within an overdense region near a local large galaxy |
| FLAG_SP_GC_CONS | int16 | None | Source may lie within an overdense region near a galaxy cluster |
| FLAG_NO_RADEC_ERR | int16 | None | Source contained no RADEC_ERR in the pre-processed version of the catalogue |
| FLAG_NO_EXT_ERR | int16 | None | Source contained no EXT_ERR in the pre-processed version of the catalogue |
| FLAG_NO_CTS_ERR | int16 | None | Source contained no CTS_ERR in the pre-processed version of the catalogue |
| FLAG_OPT | int16 | None | Source matched within 15'' with a bright optical star, likely contaminated by optical loading |
[1] The Galactic coordinates (LII and BII) are based on the raw right ascension and declination coordinates (RA_RAW and DEC_RAW). The routine used for such conversion has been found to be faulty, and therefore, the Galactic coordinates displayed in the catalogs need to be corrected by a few arcseconds. Users are encouraged to use their own coordinate conversion tools to extract corrected Galactic coordinates based on the right ascension and declination coordinates (RA and DEC), which are correct.
This work is based on data from eROSITA, the soft X-ray instrument aboard SRG, a joint Russian-German science mission supported by the Russian Space Agency (Roskosmos), in the interests of the Russian Academy of Sciences represented by its Space Research Institute (IKI), and the Deutsches Zentrum für Luft- und Raumfahrt (DLR). The SRG spacecraft was built by Lavochkin Association (NPOL) and its subcontractors, and is operated by NPOL with support from the Max Planck Institute for Extraterrestrial Physics (MPE). The development and construction of the eROSITA X-ray instrument was led by MPE, with contributions from the Dr. Karl Remeis Observatory Bamberg & ECAP (FAU Erlangen-Nuernberg), the University of Hamburg Observatory, the Leibniz Institute for Astrophysics Potsdam (AIP), and the Institute for Astronomy and Astrophysics of the University of Tübingen, with the support of DLR and the Max Planck Society. The Argelander Institute for Astronomy of the University of Bonn and the Ludwig Maximilians Universität Munich also participated in the science preparation for eROSITA.The eROSITA data shown here were processed using the eSASS/NRTA software system developed by the German eROSITA consortium