PPAKM31 – Optical Integral Field Spectroscopy of Star-Forming Regions
in M31ivo://org.gavo.dc/ppakm31/q/pubThe GAVO DC teamKreckel, K.Tomičić, N.Sandstrom, K.Groves, B.2026-01-09T14:35:58ZGAVO Data Centre TeamMönchhofstrasse 12-14, D-69120 Heidelberggavo@ari.uni-heidelberg.de+49 6221 54 1837andromeda-galaxyinterstellar-mediumh-ii-regions These observations cover five star-forming regions in the Andromeda
galaxy (M31) with optical integral field spectroscopy. Each has a
field of view of roughly 1 kpc across, at 10pc physical resolution. In
addition to the calibrated data cubes, we provide flux maps of the Hβ,
[OIII]5007, Hα, [NII]6583, [SII]6716 and [SII]6730 line emission. Line
fluxes have not been corrected for dust extinction. All data products
have associated error maps.2017ApJ...844..155Thttp://dc.g-vo.org/browse/ppakm31/qArchiveResearchIsServedByPPAKM31 – Optical Integral Field Spectroscopy of Star-Forming Regions
in M31GAVO Data Center TAP servicehttp://dc.g-vo.org/taphttps://dc.g-vo.org/tapCalar Alto 3.5m telescopePotsdam Multi-aperture Spectrophotometer (PMAS) with the PPaK
fiber-bundle6/2623,2666-2667,2709,275255819.5 55819.52.95119e-19 4.08734e-19OpticalivoaDefinition and support code for the ObsCore data model and table.
ivoa.obscoreThis data collection is queryable in GAVO Data Center's obscore table.
ppakm31PPAKM31 – Optical Integral Field Spectroscopy of Star-Forming Regions
in M31 These observations cover five star-forming regions in the Andromeda
galaxy (M31) with optical integral field spectroscopy. Each has a
field of view of roughly 1 kpc across, at 10pc physical resolution. In
addition to the calibrated data cubes, we provide flux maps of the Hβ,
[OIII]5007, Hα, [NII]6583, [SII]6716 and [SII]6730 line emission. Line
fluxes have not been corrected for dust extinction. All data products
have associated error maps.
ppakm31.maps Extracted narrow-band images.30accrefAccess key for the datameta.ref.urlAccess.ReferencecharindexednullableownerOwner of the datacharnullableembargoDate the data will become/became publicyrcharnullablemimeMIME type of the file servedmeta.code.mimeAccess.FormatcharnullableaccsizeSize of the data in bytesbyteVOX:Image_FileSizeAccess.SizelongnullablecenteralphaApproximate center of image, RAdegpos.eq.radoubleindexednullablecenterdeltaApproximate center of image, Decdegpos.eq.decdoubleindexednullableimagetitleSynthetic name of the imagemeta.titlecharnullableinstidIdentifier of the originating instrumentmeta.id;instrcharnullabledateobsRepresentative date of observation. In reality, data contributing to this observation has typically been obtained over about a month.dtime;obs.exposuredoublenullablenaxesNumber of axes in datapos.wcs.naxesintnullablepixelsizeNumber of pixels along each of the axespixelpos.wcs.naxisintnullablepixelscaleThe pixel scale on each image axisdeg/pixelpos.wcs.scalefloatnullablerefframeCoordinate system reference framepos.framecharnullablewcs_equinoxEquinox of the given coordinatesyrtime.equinoxfloatnullablewcs_projectionFITS WCS projection typepos.wcs.ctypecharnullablewcs_refpixelWCS reference pixelpixelpos.wcs.crpixfloatnullablewcs_refvaluesWorld coordinates at WCS reference pixeldegpos.wcs.crvaldoublenullablewcs_cdmatrixFITS WCS CDij matrixdeg/pixelpos.wcs.cdmatrixfloatnullablebandpassidFree-form name of the bandpass usedinstr.bandpasscharnullablebandpassunitUnit of bandpass specifications (always m).charnullablebandpassrefvalCharacteristic quantity for the bandpass of the imageminstr.bandpass;stat.medianfloatnullablebandpasshiUpper limit of the bandpass (in BandPass_Unit units)minstr.bandpass;stat.maxfloatnullablebandpassloLower limit of the bandpass (in BandPass_Unit units)minstr.bandpass;stat.minfloatnullablepixflagsFlags specifying the processing done (C-original; F-resampled; Z-fluxes valid; X-not resampled; V-for display onlymeta.codecharnullablecoverageField covered by the imagedegdoubleindexednullablefieldInternal designation of the field being observed.charnullablecube_idIVOA publisher DID of the originating cube.meta.ref.ivoidcharnullablecube_linkDatalink URL for the cube this line was extracted from. This can be used to access the cube using datalink.charnullable
ppakm31.cubes Spectral cubes of the fields. Look for these with full metadata in
the ivoa.obscore table, obs_collection 'ppakm31 cubes'.5accrefAccess key for the datameta.ref.urlAccess.ReferencecharindexednullableownerOwner of the datacharnullableembargoDate the data will become/became publicyrcharnullablemimeMIME type of the file servedmeta.code.mimeAccess.FormatcharnullableaccsizeSize of the data in bytesbyteVOX:Image_FileSizeAccess.Sizelongnullableobs_idUnique identifier for an observationmeta.idobscore:DataID.observationIDcharnullableobs_publisher_didDataset identifier assigned by the publisher.meta.ref.ivoidobscore:curation.publisherdidcharnullableaccess_estsizeEstimated size of data productkbytephys.size;meta.fileobscore:access.size19.09.097.017226641.0longnullableobs_titleFree-from title of the data setmeta.title;obsobscore:dataid.titlecharnullables_raRA of (center of) observation, ICRSdegpos.eq.raobscore:char.spatialaxis.coverage.location.coord.position2d.value2.c1020.1413209.025341.7143600.982073doublenullables_decDec of (center of) observation, ICRSdegpos.eq.decobscore:char.spatialaxis.coverage.location.coord.position2d.value2.c2-89.9161-63.4054-18.958256.480589.9880.982073doublenullablet_minLower bound of times represented in the data setdtime.start;obs.exposureobscore:char.timeaxis.coverage.bounds.limits.starttime-6146.555450.156458.35814959214.20.620126doublenullablet_maxUpper bound of times represented in the data setdtime.end;obs.exposureobscore:char.timeaxis.coverage.bounds.limits.stoptime-6146.5562865762658738.163023.50.620108doublenullables_regionRegion covered by the observation, as a polygonpos.outline;obs.fieldobscore:char.spatialaxis.coverage.support.areacharnullableem_minMinimal wavelength represented within the data setmem.wl;stat.minobscore:char.spectralaxis.coverage.bounds.limits.lolimit1.23881e-173.184e-074.8e-078.6e-071.837720.996148floatnullableem_maxMaximal wavelength represented within the data setmem.wl;stat.maxobscore:char.spectralaxis.coverage.bounds.limits.hilimit1.23881e-153.6e-076.99e-071.12e-062.492820.996148floatnullables_xel1Number of elements (typically pixels) along the first spatial axis.meta.numberobscore:Char.SpatialAxis.numBins111.01.01.0382430.9981014intnullables_xel2Number of elements (typically pixels) along the second spatial axis.meta.numberobscore:Char.SpatialAxis.numBins211.01.01.0382430.9981014intnullable