Star Formation Activity of Galaxies Undergoing Ram Pressure Stripping in
  the Virgo Cluster
  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. We first use 48 galaxies undergoing different stages of stripping
based on HI morphology, HI deficiency, and relative extent to the stellar disk,
from the VIVA survey. We then employ a new scheme for galaxy classification
which combines HI mass fractions and locations in projected phase space,
resulting in a new sample of 365 galaxies. We utilize a variety of star
formation tracers, which include g - r, WISE [3.4] - [12] 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 find no clear evidence for enhancement in the integrated star formation
activity of galaxies undergoing early to active stripping. 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. 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. Our results also indicate that it
is possible to trace galaxies at different stages of stripping with the
combination of HI gas content and location in projected phase space, which can
be extended to other galaxy clusters that lack high-resolution HI imaging.
