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We use archival Herschel data to examine the singly ionized carbon ([CII])content of 14 star forming dwarf galaxies in the Virgo cluster. We use spectralenergy distribution (SED) fits to far infrared, mid infrared, near infrared,optical and ultraviolet data to derive the total infrared continuum (TIR) forthese galaxies. We compare the [CII]/TIR ratio for dwarf galaxies in thecentral part of Virgo to those in the southern part of the cluster and togalaxies with similar TIR luminosities and metallicities in the Herschel DwarfGalaxy Survey (DGS) sample of field dwarf galaxies to look for signs of [CII]formation independent of star formation. Our analysis indicates that the sampleof Virgo dwarfs in the central part of the cluster has significantly highervalues of [CII]/TIR than the sample from the southern part of the cluster andthe sample from the DGS, while the southern sample is consistent with the DGS.This [CII]/TIR excess implies that a significant fraction of the [CII] in thedwarf galaxies in the cluster center has an origin other than star formationand is likely to be due to environmental processes in the central part of thecluster. We also find a surprisingly strong correlation between [CII]/TIR andthe local ram pressure felt by the dwarf galaxies in the cluster. In thisrespect, we claim that the excess [CII] we see in these galaxies is likely tobe due to formation in ram pressure shocks.

Environmental effects in Herschel observations of the ionized carbon content of star forming dwarf galaxies in the Virgo cluster