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To assess the effects of the cluster environment on the different componentsof the interstellar medium, we analyse the FIR-submm properties of a sample ofstar-forming dwarf (SFD) galaxies detected by the Herschel Virgo Cluster Survey(HeViCS). We determine dust masses and dust temperatures by fitting a modifiedblack body (MBB) function to the spectral energy distributions (SEDs). Stellarand gas masses, star formation rates (SFRs), and metallicities are obtainedfrom the analysis of a set of ancillary data. Dust is detected in 49 out of 140optically identified dwarfs covered by the HeViCS field; considering onlydwarfs brighter than $m_B$ = 18 mag, this gives a detection rate of 43%. Afterevaluating different emissivity indices, we find that the FIR-submm SEDs arebest-fit by $\beta$=1.5, with a median dust temperature $T_d$ = 22.4 K.Assuming $\beta$=1.5, 67% of the 23 galaxies detected in all five Herschelbands show emission at 500 $\mu$m in excess of the MBB model. The excess isinversely correlated with SFR and stellar masses. To study the variations inthe global properties of our sample due to environmental effects, we comparethe Virgo SFDs to other Herschel surveys, such as KINGFISH, the Dwarf GalaxySurvey (DGS), and the HeViCS bright galaxy catalogue (BGC). We explore therelations between stellar mass and HI fraction, specific SFR, dust fraction,gas-to-dust ratio over a wide range of stellar masses. Highly HI-deficientVirgo dwarf galaxies are mostly characterised by quenched star formationactivity and lower dust fractions giving hints for dust stripping in clusterdwarfs. However, we find that the fraction of dust removed has to be less thanthat of the HI component. Since the Virgo SFDs are likely to be crossing thecluster for the first time, a longer timescale might be necessary to strip themore centrally concentrated dust distribution.

The Herschel Virgo Cluster Survey. XVIII. Star-forming dwarf galaxies in a cluster environment