2014, Galactic Star Formation Enhanced and Quenched by Ram Pressure in Groups and Clusters, MNRAS, 438, 444īernardi, M., Shankar, F., Hyde, J. 2002, Passive Spiral Formation from Halo Gas Starvation: Gradual Transformation into S0s, ApJ, 577, 651īekki, K. 2000, The Origin of Star Formation Gradients in Rich Galaxy Clusters, ApJ, 540, 113īekki, K., Couch, W. 1999, Measuring and Modelling the Redshift Evolution of Clustering: The Hubble Deep Field North, MNRAS, 310, 540īalogh, M. 2009, The Seventh Data Release of the Sloan Digital Sky Survey, ApJS, 182, 543Īrnouts, S., Cristiani, S., Moscardini, L., et al. 2004, The Second Data Release of the Sloan Digital Sky Survey, AJ, 128, 502Ībazajian, K. Our results also indicate that it is possible to trace galaxies at different stages of stripping with the combination of H i gas content and location in projected phase space, which can be extended to other galaxy clusters that lack high-resolution H i imaging.Ībazajian, K., Adelman-McCarthy, J. Our results suggest that if there is any ram pressure stripping induced enhancement, it is at best locally modest, and galaxies undergoing enhancement make up a small fraction of the total sample. We are instead able to capture the overall quenching of star formation activity with increasing degree of ram pressure stripping, in agreement with previous studies. We find no clear evidence for enhancement in the integrated star formation activity of galaxies undergoing early to active stripping. We utilize a variety of star formation tracers, which include g - r, WISE - colors, and starburstiness that are defined by stellar mass and star formation rates to compare the star formation activity of galaxies at different stripping stages. We then employ a new scheme for galaxy classification which combines H i mass fractions and locations in projected phase space, resulting in a new sample of 365 galaxies. We first use 48 galaxies undergoing different stages of stripping based on H i morphology, H i deficiency, and relative extent to the stellar disk, from the VIVA survey. We study galaxies undergoing ram pressure stripping in the Virgo cluster to examine whether we can identify any discernible trend in their star formation activity.
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