WALLABY Pre-pilot Survey: The Effects of Tidal Interaction on Radial Distribution of Color in Galaxies of the Eridanus Supergroup.
Wang et al. 2022. ApJ, DOI:10.3847/1538-4357/ac4270
The Westerbork Coma Survey. A blind, deep, high-resolution H I survey of the Coma cluster.
Molnár et al. 2022 A&A, DOI: 10.1051/0004-6361/202142614
Dpt. Astronomía Extragaláctica
Instituto Astrofísica Andalucía
Glorieta de la Astronomía s/n
18008 Granada
Spain
Atomic gasIsolated galaxies Compact groups Studies of complementary samples Assymetries in isolated galaxies
We characterize the HI profile asymmetries in a sample of isolated galaxies and search for correlations between H I asymmetry and their environments, as well as optical and far infrared properties. We use high signal-to-noise global H I profiles for galaxies in the AMIGA project. We restrict our study to N = 166 galaxies (out of 312) with accurate measures of the H I shape properties. We quantify asymmetries using a flux ratio parameter.
Fig. 1 A_flux~ratio distribution of the HI refined subsample (N = 166, blue filled histogram), in comparison with that of the HI sample (N = 312, solid line histogram). A half-Gaussian fit (red dashed line) to the HI refined subsample is presented. The half-Gaussian curve is characterized by a standard deviation sigma=0.13. In the lower panel we show the residual of the half-Gaussian fit to the observed A_flux~ratio distribution for the HI refined subsample. |