J/MNRAS/440/2036ivo://CDS.VizieR/J/MNRAS/440/2036doi:10.26093/cds/vizier.74402036CDSDrew J.E.Gonzalez-Solares E.Greimel R.Irwin M.J.Kupcu Yoldas A.,Lewis J.Barentsen G.Eisloffel J.Farnhill H.J.Martin W.E.,Walsh J.R.Walton N.A.Mohr-Smith M.Raddi R.Sale S.E.Wright N.J.,Groot P.Barlow M.J.Corradi R.L.M.Drake J.J.Fabregat J.Frew D.J.,Gansicke B.T.Knigge C.Mampaso A.Morris R.A.H.Naylor T.,Parker Q.A.Phillipps S.Ruhland C.Steeghs D.Unruh Y.C.Vink J.S.,Wesson R.Zijlstra A.A.2024-08-08T20:13:08Z2016-05-17T12:42:48ZCDS support team

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

cds-question@unistra.frastronomical-modelsvisible-astronomymedium-band-photometryh-alpha-photometryThe VST Photometric H{alpha} Survey of the Southern Galactic Plane and Bulge (VPHAS+) is surveying the southern Milky Way in u, g, r, i and H{alpha} at ~1arcsec angular resolution. Its footprint spans the Galactic latitude range -5{deg}<b<+5{deg} at all longitudes south of the celestial equator. Extensions around the Galactic Centre to Galactic latitudes +/-10{deg} bring in much of the Galactic bulge. This European Southern Observatory public survey, begun on 2011 December 28, reaches down to ~20th magnitude (10{sigma}) and will provide single-epoch digital optical photometry for ~300 million stars. The observing strategy and data pipelining are described, and an appraisal of the segmented narrow-band H{alpha} filter in use is presented. Using model atmospheres and library spectra, we compute main-sequence (u-g), (g-r), (r-i) and (r-H{alpha}) stellar colours in the Vega system. We report on a preliminary validation of the photometry using test data obtained from two pointings overlapping the Sloan Digital Sky Survey. An example of the (u-g, g-r) and (r-H{alpha}, r-i) diagrams for a full VPHAS+ survey field is given. Attention is drawn to the opportunities for studies of compact nebulae and nebular morphologies that arise from the image quality being achieved. The value of the u band as the means to identify planetary-nebula central stars is demonstrated by the discovery of the central star of NGC 2899 in survey data. Thanks to its excellent imaging performance, the VLT Survey Telescope (VST)/OmegaCam combination used by this survey is a perfect vehicle for automated searches for reddened early-type stars, and will allow the discovery and analysis of compact binaries, white dwarfs and transient sources.2014MNRAS.440.2036Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/440/2036CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJ/663/320 : IR-through-UV extinction curve (Fitzpatrick+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/440/2036https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/440/2036http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/440/2036https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/440/2036https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/440/2036http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/440/2036GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/MNRAS/440/2036/tablea1VST/OmegaCAM synthetic colours for main-sequence stars in the (u-g), (g-r) plane reddened with an R_V_=2.5 extinction lawrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRVRV value of extinction law (G1)phys.absorptionfloatSpTypeSpectral typesrc.spTypechar(u-g)0u-g colour index for A0=0 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)0g-r colour index for A0=0 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)2u-g colour index for A0=2 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)2g-r colour index for A0=2 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)4u-g colour index for A0=4 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)4g-r colour index for A0=4 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)6u-g colour index for A0=6 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)6g-r colour index for A0=6 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)8u-g colour index for A0=8 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)8g-r colour index for A0=8 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)10? u-g colour index for A0=10 range of reddening (tablea7 only)magphot.color;em.opt.U;em.opt.Bfloatnullable(g-r)10? g-r colour index for A0=10 range of reddening (tablea7 only)magphot.color;em.opt.B;em.opt.RfloatnullableJ/MNRAS/440/2036/tablea2VST/OmegaCAM synthetic colours for main-sequence stars in the (u-g), (g-r) plane reddened with an R_V_=3.1 extinction lawrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRVRV value of extinction law (G1)phys.absorptionfloatSpTypeSpectral typesrc.spTypechar(u-g)0u-g colour index for A0=0 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)0g-r colour index for A0=0 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)2u-g colour index for A0=2 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)2g-r colour index for A0=2 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)4u-g colour index for A0=4 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)4g-r colour index for A0=4 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)6u-g colour index for A0=6 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)6g-r colour index for A0=6 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)8u-g colour index for A0=8 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)8g-r colour index for A0=8 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)10? u-g colour index for A0=10 range of reddening (tablea7 only)magphot.color;em.opt.U;em.opt.Bfloatnullable(g-r)10? g-r colour index for A0=10 range of reddening (tablea7 only)magphot.color;em.opt.B;em.opt.RfloatnullableJ/MNRAS/440/2036/tablea3VST/OmegaCAM synthetic colours for main-sequence stars in the (u-g), (g-r) plane reddened with an R_V_=3.1 extinction lawRVRV value of extinction law (G1)phys.absorptionfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSpTypeSpectral typesrc.spTypechar(u-g)0u-g colour index for A0=0 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)0g-r colour index for A0=0 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)2u-g colour index for A0=2 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)2g-r colour index for A0=2 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)4u-g colour index for A0=4 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)4g-r colour index for A0=4 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)6u-g colour index for A0=6 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)6g-r colour index for A0=6 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)8u-g colour index for A0=8 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)8g-r colour index for A0=8 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)10? u-g colour index for A0=10 range of reddening (tablea7 only)magphot.color;em.opt.U;em.opt.Bfloatnullable(g-r)10? g-r colour index for A0=10 range of reddening (tablea7 only)magphot.color;em.opt.B;em.opt.RfloatnullableJ/MNRAS/440/2036/tablea4VST/OmegaCAM synthetic colours for main-sequence stars in the (r-i), (r-H{alpha}) plane reddened with an R_V_=2.5 extinction lawrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRVRV value of extinction law (G1)phys.absorptionfloatSpTypeSpectral typesrc.spTypechar(r-i)0r-i colour index for A0=0 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)0r-Ha colour index for A0=0 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)2r-i colour index for A0=2 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)2r-Ha colour index for A0=2 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)4r-i colour index for A0=4 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)4r-Ha colour index for A0=4 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)6r-i colour index for A0=6 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)6r-Ha colour index for A0=6 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)8r-i colour index for A0=8 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)8r-Ha colour index for A0=8 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)10r-i colour index for A0=10 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)10r-Ha colour index for A0=108 range of reddeningmagphot.color;em.opt.R;em.line.HalphafloatJ/MNRAS/440/2036/tablea5VST/OmegaCAM synthetic colours for main-sequence stars in the (r-i), (r-H{alpha}) plane reddened with an R_V_=3.1 extinction lawrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRVRV value of extinction law (G1)phys.absorptionfloatSpTypeSpectral typesrc.spTypechar(r-i)0r-i colour index for A0=0 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)0r-Ha colour index for A0=0 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)2r-i colour index for A0=2 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)2r-Ha colour index for A0=2 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)4r-i colour index for A0=4 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)4r-Ha colour index for A0=4 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)6r-i colour index for A0=6 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)6r-Ha colour index for A0=6 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)8r-i colour index for A0=8 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)8r-Ha colour index for A0=8 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)10r-i colour index for A0=10 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)10r-Ha colour index for A0=108 range of reddeningmagphot.color;em.opt.R;em.line.HalphafloatJ/MNRAS/440/2036/tablea6VST/OmegaCAM synthetic colours for main-sequence stars in the (r-i), (r-H{alpha}) plane reddened with an R_V_=3.8 extinction lawrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRVRV value of extinction law (G1)phys.absorptionfloatSpTypeSpectral typesrc.spTypechar(r-i)0r-i colour index for A0=0 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)0r-Ha colour index for A0=0 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)2r-i colour index for A0=2 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)2r-Ha colour index for A0=2 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)4r-i colour index for A0=4 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)4r-Ha colour index for A0=4 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)6r-i colour index for A0=6 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)6r-Ha colour index for A0=6 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)8r-i colour index for A0=8 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)8r-Ha colour index for A0=8 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)10r-i colour index for A0=10 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)10r-Ha colour index for A0=108 range of reddeningmagphot.color;em.opt.R;em.line.HalphafloatJ/MNRAS/440/2036/tablea7VST/OmegaCAM blue-filter colours synthesised from P98 spectrophotometry for K-M giant stars, reddened using an R_V_=3.1 extinction lawrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRVRV value of extinction law (G1)phys.absorptionfloatSpTypeSpectral typesrc.spTypechar(u-g)0u-g colour index for A0=0 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)0g-r colour index for A0=0 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)2u-g colour index for A0=2 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)2g-r colour index for A0=2 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)4u-g colour index for A0=4 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)4g-r colour index for A0=4 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)6u-g colour index for A0=6 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)6g-r colour index for A0=6 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)8u-g colour index for A0=8 range of reddeningmagphot.color;em.opt.U;em.opt.Bfloat(g-r)8g-r colour index for A0=8 range of reddeningmagphot.color;em.opt.B;em.opt.Rfloat(u-g)10? u-g colour index for A0=10 range of reddening (tablea7 only)magphot.color;em.opt.U;em.opt.Bfloatnullable(g-r)10? g-r colour index for A0=10 range of reddening (tablea7 only)magphot.color;em.opt.B;em.opt.RfloatnullableJ/MNRAS/440/2036/tablea8VST/OmegaCAM red-filter colours synthesised from P98 spectrophotometry for K-M giant stars reddened using an R_V_=3.1 extinction lawrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRVRV value of extinction law (G1)phys.absorptionfloatSpTypeSpectral typesrc.spTypechar(r-i)0r-i colour index for A0=0 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)0r-Ha colour index for A0=0 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)2r-i colour index for A0=2 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)2r-Ha colour index for A0=2 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)4r-i colour index for A0=4 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)4r-Ha colour index for A0=4 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)6r-i colour index for A0=6 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)6r-Ha colour index for A0=6 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)8r-i colour index for A0=8 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)8r-Ha colour index for A0=8 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat(r-i)10r-i colour index for A0=10 range of reddeningmagphot.color;em.opt.R;em.opt.Ifloat(r-Ha)10r-Ha colour index for A0=108 range of reddeningmagphot.color;em.opt.R;em.line.Halphafloat