An environmental dependence of the physical and structural properties in the Hydra cluster galaxies

• DOI: 10.1093/mnras/staa3326
• Publication Date: 2020-10-23T19:11:53Z
• Authors: Ciria Lima-Dias; Antonela Monachesi; Sergio Torres-Flores; Arianna Cortesi; Daniel Hernández-...; Carlos Eduardo Ba...; Claudia Mendes de...; Daniela Olave-Rojas; Diego Pallero; Laura Sampedro; Alberto Molino; Fabio R Herpich; Yara L Jaffé; Ricardo Amorín; Ana L Chies-Santos; Paola Dimauro; Eduardo Telles; Paulo A A Lopes; Alvaro Alvarez-Ca...; Fabricio Ferrari; Antonio Kanaan; Tiago Ribeiro; William Schoenell
• Keywords: Lernaean Hydra

The nearby Hydra Cluster ($\sim$50 Mpc) is an ideal laboratory to understand, in detail, the influence of environment on morphology and quenching galaxies dense environments. We study cluster inner regions ($1R_{200}$) using data from Southern Photometric Local Universe Survey (S-PLUS), which uses 12 narrow broad band filters visible region spectrum. analyse structural (S\'ersic index, effective radius) physical (colours, stellar masses star formation rates) properties. Based this analysis, we find that $\sim$88 percent are quenched. Using Dressler-Schectman test approach, also shows possible substructures. Our analysis phase-space diagram together with DBSCAN algorithm indicates additional substructure appears be front centre, still falling into it. results, thus, suggest might not relaxed. median S\'ersic index as a function wavelength for red ($(u-r)\geq$2.3) early-type it displays slight increase towards redder (13 18 percent, respectively) whereas blue+green ($(u-r)$<2.3) remains constant. Late-type show small decrease toward filters. Also, galaxies, thus their properties, do significantly vary clustercentric distance density within cluster; case regardless filter.