Environmental dependences of galaxy properties in the southern regions of the GAMA survey
Environmental dependences of galaxy properties in the southern regions of the GAMA survey
K. Joy, U. Sureshkumar, A. Narayanan, S. Bellstedt, A. Durkalec, A. Pollo, M. Hilton
AbstractPhysical properties of galaxies are correlated with their local environment. Quantifying these environmental correlations is crucial for a better understanding of galaxy formation and evolution. In this work, we investigate how galaxy properties are correlated with the environment through spatial clustering measurements of galaxies. Using two-point correlation functions and marked correlation functions, we measure and compare the environmental dependence of colour, stellar mass, luminosities in the $u$, $g$, $r$, $J$, and $K$ bands, star formation rate, and specific star formation rate. We use galaxy samples from the southern (G02 and G23) regions of the Galaxy and Mass Assembly (GAMA) survey. Furthermore, we explore how redshift completeness affects clustering measurements by comparing different subsets of the G02 region with varying redshift completeness. We show that the $u-r$ and $g-r$ colours correlate the most with the local environment, with stellar mass being the next most reliable indicator of the environment. We also demonstrate that redshift completeness has a significant effect on clustering measurements.