J/A+A/597/A130ivo://CDS.VizieR/J/A+A/597/A130doi:10.26093/cds/vizier.35970130CDSBianchi S.Giovanardi C.Smith M.W.L.Fritz J.Davies J.I.,Haynes M.P.Giovanelli R.Baes M.Bocchio M.Boissier S.Boquien M.,Boselli A.Casasola V.Clark C.J.R.De Looze I.,di Serego Alighieri S.Grossi M.Jones A.P.Hughes T.M.Hunt L.K.,Madden S.Magrini L.Pappalardo C.Ysard N.Zibetti S.2017-01-17T06:54:09Z2017-01-17T07:53:14ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgalaxy-clustersmillimeter-astronomyphotometrysubmillimeter-astronomyinterstellar-mediumWe study the correlation between far-infrared/submm dust emission and atomic gas column density in order to derive the properties of the high Galactic latitude, low density, Milky Way cirrus in the foreground of the Virgo cluster of galaxies. Dust emission maps from 60 to 850um are obtained from SPIRE observations carried out within the Herschel Virgo Cluster Survey, complemented by IRAS-IRIS and Planck-HFI maps. Data from the Arecibo legacy Fast ALFA Survey is used to derive atomic gas column densities for two broad velocity components, low and intermediate velocity clouds. Dust emissivities are derived for each gas component and each far-infrared/submm band. For the low velocity clouds, we measure an average emissivity {epsilon]_{nu}^LVC=(0.79+/-0.08)*10^-20^MJy.cm^2^/sr at 250um. After fitting a modified blackbody to the available bands, we estimated a dust absorption cross-section {tau}_{nu}^LVC/N_HI_=(0.49+/-0.13)*10^-25cm^2^/H at 250um (with dust temperature T=20.4+/-1.5K and spectral index {beta}=1.53+/-0.17). The results are in excellent agreement with those obtained by Planck over a much larger coverage of the high Galactic latitude cirrus (50% of the sky vs 0.2% in our work). For dust associated with intermediate velocity gas, we confirm earlier Planck results and find a higher temperature and lower emissivity and cross-section. After subtracting the modelled components, we find regions at scales smaller than 20' where the residuals deviate significantly from the average, cosmic-infrared-background dominated, scatter. These large residuals are most likely due to local variations in the cirrus dust properties (and/or the dust/atomic-gas correlation) or to high-latitude molecular clouds with average N_H2_<~10^20^cm^-2^. We find no conclusive evidence for intracluster dust emission in Virgo.2017A&A...597A.130Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/597/A130CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/90/1681 : The Virgo Cluster Catalog (VCC) (Binggeli+, 1985)J/MNRAS/419/3505 : The HeViCS Bright Galaxy Sample (Davies+, 2012)J/MNRAS/428/1880 : FIR properties of VCC galaxies (Auld+, 2013)J/A+A/552/A8 : 454 VCC galaxies revised coord. (di Serego Alighieri+ 2013)J/A+A/573/A129 : HeViCS. SPIRE point-source catalogs (Pappalardo+, 2015)J/A+A/574/A126 : HeViCS. XVIII. Star-forming dwarf galaxies (Grossi+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/597/A130https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/597/A130http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/597/A130https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/597/A130https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/597/A130http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/597/A130GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/597/A130/list (List of fits images)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/597/A130/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/597/A130/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/597/A130/list?GETtext/xml+votable180.050000true185.772399.632770.0055555555555555566/27738https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/597/A130?format=asciiRadiodefaultJ/A+A/597/A130/listList of fits imagesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainscaleScale of the imagearcsec/pixinstr.scaleintNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fits