Maqola

Identification of low redshift groups and clusters of galaxies in the X-CLASS survey and the X-ray luminosity-temperature relation

Q. MoysanUniversité de ToulouseFlorian SarronIRAP , Université de Toulouse , CNRS , CNES , 14 Avenue Belin , 31400 Toulouse , FranceN. ClercCentre National d'Études SpatialesG. SoucailInstitut de Recherche en Astrophysique et PlanétologieC. AdamiAix-Marseille UniversitéB. AltieriESAC/ESA , Camino Bajo del Castillo, s/n. , Urb. Villafranca del Castillo , 28692 Villanueva de la Cañada , Madrid , SpainR. CabanacUniversité de ToulouseMaria ChiraInstitute for Astronomy & Astrophysics , National Observatory of Athens , 15236 Palaia Penteli , GreeceJohan ComparatInstitut National de Physique Nucléaire et de Physique des ParticulesD. CoiaTelespazio UK for ESA , European Space Astronomy Centre , Operations Department , E-28691 Villanueva de la Cañada , SpainE. DriggaInstitute for Astronomy & Astrophysics , National Observatory of Athens , 15236 Palaia Penteli , GreeceE.R. GAYNULLINAUlugh Beg Astronomical Institute of Uzbekistan Academy of Sciences , 33 Astronomicheskaya Str. , Tashkent 100052 , UzbekistanA. KhalikovaUlugh Beg Astronomical Institute of Uzbekistan Academy of Sciences , 33 Astronomicheskaya Str. , Tashkent 100052 , UzbekistanE. KoulouridisInstitute for Astronomy, Astrophysics, Space Applications and Remote SensingK. MigkasLeiden Observatory , Leiden University , P.O. Box 9513 , 2300 RA Leiden , The NetherlandsM. MolhamNational Research Institute of Astronomy and Geophysics (NRIAG) , 11421 Helwan , EgyptLouise PaquereauInstitut d'Astrophysique de ParisT. SadibekovaUniversité Paris-Saclay , Université Paris Cité , CEA , CNRS , AIM , 91191 , Gif-sur-Yvette , FranceI. ValtchanovTelespazio UK for ESA , European Space Astronomy Centre , Operations Department , E-28691 Villanueva de la Cañada , Spain

2026en

ABI

Annotatsiya

Properties of the hot intracluster and intragroup medium are mostly set by the underlying gravitational potential well, although complex astrophysical processes at play during their buildup may leave a significant imprint. Observational constraints on the degree and scales of such non-gravitational processes require well-selected samples of objects and deep observations of their gas content. We aim to study the scaling relation between two global properties of the hot gas, namely its soft-band X-ray luminosity ($L_X$) and its temperature ($T$), by studying a sample of low-mass systems associated with precise redshifts, simultaneously accounting for sample selection biases and associated measurement uncertainties. This work takes as input a large catalogue of X-ray-selected galaxy clusters (X-CLASS). We perform a thorough revision of the redshifts of sources using deep photometric data from the Legacy Surveys and our own tailored spectroscopic follow-up of 52 low-redshift systems. We devise a spectroscopically complete sample of 155 low-redshift ($0.07

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Identifikatorlar

DOI: 10.48550/arxiv.2603.23195

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