Different quenching tracers applied to MaNGA galaxies produce varying inside-out versus outside-in fractions, with inside-out rising at higher stellar mass while halo-mass trends are weaker.
Environmental Effects on Galaxy Evolution
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abstract
It is a remarkable feature that various properties of galaxies vary according to their environments. However, only little has been known on the origin of this variety in galaxies. Using the Sloan Digital Sky Survey (SDSS) data, we investigate the morphology-density relation to find two characteristic environment where the morphology-density relation abruptly changes (0.3 and 2 Rvir).The result has significant implication for the underlying physical mechanism since it suggests that two different mechanisms might be responsible for the morphology-density relation. In addition, we study the environment of unusual spiral galaxies with no [OII] or Halpha emission lines (passive spirals), and find that passive spiral galaxies preferentially live in cluster infalling regions (1-10 Rvir}). Thus, the origin of passive spiral galaxies is likely to be cluster related. Based on all of our observational results, we propose possible fate of cluster infalling galaxies.
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Inside-Out vs. Outside-In Quenching of MaNGA Galaxies: Dependence on Stellar Mass and Environment
Different quenching tracers applied to MaNGA galaxies produce varying inside-out versus outside-in fractions, with inside-out rising at higher stellar mass while halo-mass trends are weaker.