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Data Model: erass1cl_cosmology_v1.1

General description
The cluster catalog of 5,259 optically confirmed galaxy groups and clusters detected in the 0.2-2.3 keV as extended X-ray sources in a 12791 square degree region in the western Galactic hemisphere of the sky. The clusters in the sample span the photometric redshift range from 0.1 to 0.8. See Bulbul et al. (2024) for further details. This catalog is used in the eRASS1 cosmology analysis presented in Ghirardini et al. (2024) .


Filename:
erass1cl_cosmology_v1.1.fits

Approximate size
1 MB

File type
FITS

Sections

Content of the page (HDU means "Header Data Unit" of a fits file).

HDU0: PRIMARY

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HDU Type
IMAGE
HDU Size
0 bytes

HDU1: Joined

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HDU Type
BINARY TABLE
HDU Size
1 MB
Binary Table Caption for HDU1
NameTypeUnitDescription
DETUID char[32] None Unique source ID
NAME char[23] None Source name 1eRASS JHHMMSS.s+DDMMSS
RA float64 deg Right ascension (J2000)
DEC float64 deg Declination (J2000)
Z_LAMBDA float32 None Photometric redshift
Z_LAMBDA_E float32 None 1 sigma error on Z_LAMBDA
KT float64 keV Temperature measured by MBProj2D
KT_L float64 keV 1sigma lower limit of KT
KT_H float64 keV 1sigma upper limit of KT
L500 float64 10**42 erg s-1 0.2-2.3keV luminosity within R500
L500_L float64 10**42 erg s-1 1sigma lower limit of L500
L500_H float64 10**42 erg s-1 1sigma upper limit of L500
CR500 float64 s-1 Count rate within R500 (CR500)
CR500_L float64 s-1 1sigma lower limit of CR500
CR500_H float64 s-1 1sigma upper limit of CR500
CR500_NH0 float64 s-1 Unabsorbed count rate within R500
CR500_L_NH0 float64 s-1 1sigma lower limit of CR500_NH0
CR500_H_NH0 float64 s-1 1sigma upper limit of CR500_NH0
MGAS500 float64 10**11 solMass Gas Mass within R500
MGAS500_L float64 10**11 solMass 1sigma lower limit of MGAS500
MGAS500_H float64 10**11 solMass 1sigma upper limit of MGAS500
YX500 float64 10**11 keV solMass The mass proxy Yx within R500
YX500_L float64 10**11 keV solMass 1sigma lower limit of YX500
YX500_H float64 10**11 keV solMass 1sigma upper limit of YX500

References

Bulbul et al. (2024),A&A in press. The SRG/eROSITA All-Sky Survey: The first catalog of galaxy clusters and groups in the Western Galactic Hemisphere

Ghirardini et al. (2024),A&A in press. The SRG/eROSITA All-Sky Survey: Cosmology Constraints from Cluster Abundances in the Western Galactic Hemisphere

Acknowledgement

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.