English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present the first detection of diffuse dust in the intra-cluster medium ofthe Virgo cluster out to $\sim$0.4 virial radii, and study the radial variationof its properties on a radial scale of the virial radius. Analysing near-UV -$i$ colours for a sample of $\sim12000$ background galaxies with redshifts$0.02 < z < 0.8$, we find significant colour reddening and relate it tovariation in $E(B-V)$ values. The $E(B-V)$ mean profile shows a dust componentcharacterised by an average reddening $E(B-V)\sim0.042 \pm 0.004$ mag within1.5 degrees ($\sim0.3\, r_{vir}$) from the cluster centre. Assuming a LargeMagellanic Cloud extinction law, we derive an average visual extinction $A_{V}= 0.14\pm 0.01$ for a total dust mass, $M_{d} =2.5\pm0.2\times10^{9}M_{\odot}$, hence a dust-to-gas mass ratio $M_{d}/M_{g} =3.0\pm 0.3 \times 10^{-4}$. Based on the upper limits on the flux density$\mathrm{I_{250\mu m} = 0.1\, MJy sr^{-1}} $ derived from $Herschel$ data, weestimate an upper limit for the dust temperature of $T_{d} \sim 10\, K$.However, similar densities can be obtained with dust at higher temperatureswith lower emissivities. The Virgo cluster has diffuse dust in itsintra-cluster medium characterised by different physical properties as thosecharacterising the Milky Way dust. The diffuse dust in Virgo is transportedinto the cluster space through similar phenomena (stripping) as those buildingup the optical intra-cluster light, and it constitutes an additional coolingagent of the cluster gas.

The GALEX Ultraviolet Virgo Cluster Survey (GUViCS) VIII. Diffuse dust in the Virgo intra-cluster space