标题： 十二个波段下Hydra星系团星系的 bulge-disc 分解 显示英文标题

标题： Bulge-disc decomposition of the Hydra cluster galaxies in 12 bands

摘要： 当一个星系落入星团时，其最外围的部分受环境影响最大。 在本文中，我们感兴趣的是研究密集环境中不同星系成分的影响，以便更好地理解这对星系演化的影响。 我们将后发座星团作为研究的实验室，该星团接近于达到virial平衡；然而，它仍然显示出次结构的证据。 我们展示了从S-PLUS数据中同时在12个波段上进行的多波长核球-盘分解，涉及52个亮度大于m$_{r}$= 16的星系。 我们用Sérsic轮廓建模核球，并用指数轮廓建模盘。 我们发现，较小、更紧凑且以核球为主的星系在固定恒星质量下往往表现出更红的颜色。 这表明，导致这些星系紧致化的相同机制（冲击压力剥离和潮汐剥离）也在促使它们停止形成恒星。 核球的大小与星系的恒星质量无关，而盘的大小随着更大的恒星质量增加，表明盘在整体星系质量和尺寸关系中的主导作用。 此外，我们的环境分析揭示，淬灭星系在可能与次结构相关的区域中普遍存在。 然而，这些区域也容纳了一小部分正在形成恒星的星系，主要源于星系相互作用。 最后，我们发现， 约37%的星系表现出比其盘更蓝的核球，这表明在这种密集环境中存在一种外向内淬灭的过程。 显示英文摘要

摘要： When a galaxy falls into a cluster, its outermost parts are the most affected by the environment. In this paper, we are interested in studying the influence of a dense environment on different galaxy's components to better understand how this affects the evolution of galaxies. We use, as laboratory for this study, the Hydra cluster which is close to virialization; yet it still shows evidence of substructures. We present a multi-wavelength bulge-disc decomposition performed simultaneously in 12 bands from S-PLUS data for 52 galaxies brighter than m$_{r}$= 16. We model the galaxies with a Sersic profile for the bulge and an exponential profile for the disc. We find that the smaller, more compact, and bulge-dominated galaxies tend to exhibit a redder colour at a fixed stellar mass. This suggests that the same mechanisms (ram-pressure stripping and tidal stripping) that are causing the compaction in these galaxies are also causing them to stop forming stars. The bulge size is unrelated to the galaxy's stellar mass, while the disc size increases with greater stellar mass, indicating the dominant role of the disc in the overall galaxy mass-size relation found. Furthermore, our analysis of the environment unveils that quenched galaxies are prevalent in regions likely associated with substructures. However, these areas also harbour a minority of star-forming galaxies, primarily resulting from galaxy interactions. Lastly, we find that ~37 percent of the galaxies exhibit bulges that are bluer than their discs, indicative of an outside-in quenching process in this type of dense environments.