.. _SIMGalaxyCatalogProduct: Galaxy Catalog Product ---------------------- Data product name ================= .. DataProductNameStart DpdGalaxyCatalogProduct .. DataProductNameEnd Data product custodian ====================== .. DataProductCustodianStart SIM .. DataProductCustodianEnd Data model tag ============== .. DataModelTagStart 9.0.1 .. DataModelTagEnd Name of the Schema file ======================= .. NameSchemaStart euc-test-sim-GalaxyCatalogProduct.xsd .. NameSchemaEnd Schema documentation tag ======================== .. SchemaDocTagStart :emphasis:`Data product documentation:` Input data product for the SIM PF :emphasis:`Documentation for data product element Header:` Generic Header as specified in /sys :emphasis:`Documentation for data product element DpdGalaxyCatalogProduct:` Information related to a galaxy catalog covering a sky patch, and associated information required to reconstruct the galaxy spectra. .. SchemaDocTagEnd Data product elements ===================== .. DataProductElementsStart Header of type: sys:genericHeader Data of type: sim:galaxyCatalogProduct Parameters of type: ppr:genericKeyValueParameters .. DataProductElementsEnd Processing Element(s) creating/using the data product ===================================================== .. PECreatorStart These catalogs are created by the CosmoSIM SWG, outside of the SIM PF. Processing elements using the data product: * SIM_Tools/EuclidTU * SIM_Tools/ComputeFluxes * SIM_ELViS_Simulator/EuclidVis * SIM_TIPS_Simulator/EuclidNis * SIM_Imagem/EuclidNip * SIM_EXT/EuclidExt .. PECreatorEnd Processing function using the data product ========================================== .. PFUsingStart SIM_Tools, SIM_ELViS_Simulator, SIM_TIPS_Simulator, SIM_Imagem, SIM_EXT .. PFUsingEnd Detailed description of the data product ======================================== .. DetailedDescStart A GalaxyCatalogProduct contains the following elements that describe a sky patch and associated information required to reconstruct galaxy spectra: * **GalaxyCatalog**: Galaxy catalogue filename, associated with the area it covers on the sky * **SedLibrary**: Library identifier, and data container to a the galaxy SEDs templates used to produce galaxy spectra * **ExtinctionLawLibrary**: Library identifier, and data container to the Extinction laws used to produce the galaxy spectra * **ReferenceFilterFile**: Data container with the filter throughput filename, used to renormalize the galaxy templates to apparent flux. * **StampsLibrary**: List of FITS files containing galaxy image thumbnails to paste in the simulated images (optional) The name of the release is given by the **DataSetRelease** element in **Header** section of the data product. GalaxyCatalog FITS format +++++++++++++++++++++++++ The format of the input galaxy catalogue is specified by the FITS format `sim.galaxyCatalog 0.3 `_. More information can be found on the `Redmine wiki `_. A catalogue contains the following columns. Note that the fluxes include the lensing magnification factor. The intrinsic fluxes can be recovered by multiplying them by mu = (1-kappa)**2 - gamma1**2 - gamma2**2. **Parameters** * **SOURCE_ID**: Unique TU id * **HALO_ID**: Unique halo id coming from the Flagship dark matter halo catalog * **KIND**: Galaxy type: 0: CENTRAL, 1: SATELLITE, 2: QSO, 3: HIGH REDSHIFT, 4: STRONG-LENSING SOURCE, 5: GLOBULAR-CLUSTER SOURCE * **RA**: Right ascension (J2000) without lensing in degrees * **DEC**: Declination (J2000) without in degrees * **RA_MAG**: Right ascension (J2000) with lensing in degrees * **DEC_MAG**: Declination (J2000) with in degrees * **Z_OBS**: Galaxy observed redshift (including peculiar velocity) * **REF_MAG_ABS**: Absolute magnitude used to scale emission lines width (usually in the r-band filter redshifted at z=0.1) * **REF_MAG**: Magnitude used to rescale template (usually apparent SDSS r band z=0.1 AB magnitude, but absolute for QSO and High-z. Does not include lensing magnification) * **SED_TEMPLATE**: SED template index in the SED library * **EXT_LAW**: COSMOS Extinction law index * **EBV**: Interpolated extinction strength for COSMOS extinction curve * **HALPHA_LOGFLAM_EXT_MAG**: logarithm of flux of Halpha (erg/cm**2/s) calibrated using Pozzetti model 3 (observed: includes extinction) * **HBETA_LOGFLAM_EXT_MAG**: logarithm of flux of Hbeta (erg/cm**2/s) calibrated using Pozzetti model 3 (observed: includes extinction) * **O2_LOGFLAM_EXT_MAG**: logarithm of flux of O2 (erg/cm**2/s) calibrated using Pozzetti model 3 (observed: includes extinction) * **O3_LOGFLAM_EXT_MAG**: logarithm of flux of O3 (erg/cm**2/s) calibrated using Pozzetti model 3 (observed: includes extinction) * **N2_LOGFLAM_EXT_MAG**: logarithm of flux of N2 (erg/cm**2/s) calibrated using Pozzetti model 3 (observed: includes extinction) * **S2_LOGFLAM_EXT_MAG**: logarithm of flux of S2 (erg/cm**2/s) calibrated using Pozzetti model 3 (observed: includes extinction) * **BULGE_FRACTION**: ratio of the flux in the bulge component to the total flux (often written B/T) * **BULGE_R50**: major-axis half-light radius in arcsec. For SL sources, this is the index in the stamps library. For GC sources, this is used to compute the core radius of the King profile. * **DISK_R50**: For disk-dominated galaxies, the disk_length is the major-axis exponential scalelength in arcsec (is 0 for bulge-dominated galaxies) * **BULGE_NSERSIC**: Sersic index of the bulge component. For stamp creation * **BULGE_AXIS_RATIO**: Bulge projected axis ratio (b/a). For stamp creation * **INCLINATION_ANGLE**: Galaxy inclination angle (where 0 degrees = face-on and 90 degrees = edge-on). Galaxy ellipticity for disk and bulge components are computed following the recipe in https://euclid.roe.ac.uk/projects/sgsshear/wiki/SHE-SIM. For stamp creation * **DISK_ANGLE**: position of the disk rotation axis (degrees) (assumption: bulge_angle = disk_angle) From North to East, with the major axis aligned in Declination * **KAPPA**: lensing convergence * **GAMMA1**: lensing shear for axis 1 * **GAMMA2**: lensing shear for axis 2 * **AV**: MW optical extinction in the V band Note that Flagship assumes a flip sign in the declination axis (+DEC -> -DEC), i.e. there is a flip sign in gamma1 and gamma2 compared to the usual convention (see issue `#10560 `_ on Euclid redmine). Morphology parameters are ignored for QSO sources, because they are simulated point-like sources. **Fluxes** ========= ============= ======== ======================================================= ==================================== ind Instrument Filter MDB variable name TU variable name for flux ========= ============= ======== ======================================================= ==================================== 1 Euclid VIS VIS Combination of multiple variables TU_FNU_VIS_MAG --------- ------------- -------- ------------------------------------------------------- ------------------------------------ 2 EUCLID NISP Y Combination of multiple variables TU_FNU_Y_NISP_MAG 3 J Combination of multiple variables TU_FNU_J_NISP_MAG 4 H Combination of multiple variables TU_FNU_H_NISP_MAG --------- ------------- -------- ------------------------------------------------------- ------------------------------------ 5 DECam g ExternalData.BLA.BlancoDECamTotalTrans.g TU_FNU_G_DECAM_MAG 6 r ExternalData.BLA.BlancoDECamTotalTrans.r TU_FNU_R_DECAM_MAG 7 i ExternalData.BLA.BlancoDECamTotalTrans.i TU_FNU_I_DECAM_MAG 8 z ExternalData.BLA.BlancoDECamTotalTrans.z TU_FNU_Z_DECAM_MAG --------- ------------- -------- ------------------------------------------------------- ------------------------------------ 9 MegaCam u ExternalData.CFH.CFHTMegaCamTotalTrans.u TU_FNU_U_MEGACAM_MAG 10 r ExternalData.CFH.CFHTMegaCamTotalTrans.r TU_FNU_R_MEGACAM_MAG --------- ------------- -------- ------------------------------------------------------- ------------------------------------ 11 JPCam g ExternalData.JST.JSTJPCamTotalTrans.g TU_FNU_G_JPCAM_MAG --------- ------------- -------- ------------------------------------------------------- ------------------------------------ 12 Pan-STARRS i ExternalData.PAN.PanSTARRSTotalTrans.i TU_FNU_I_PANSTARRS_MAG 13 z ExternalData.PAN.PanSTARRSTotalTrans.z TU_FNU_Z_PANSTARRS_MAG --------- ------------- -------- ------------------------------------------------------- ------------------------------------ 14 HSC z ExternalData.SUB.SubaruHSCTotalTrans.z TU_FNU_Z_HSC_MAG --------- ------------- -------- ------------------------------------------------------- ------------------------------------ 15 GAIA G ExternalData.GAIA.TotalSystemTransmissionExpressedAsQE TU_FNU_G_GAIA_MAG 16 Bp TU_FNU_BP_GAIA_MAG 17 Rp TU_FNU_RP_GAIA_MAG --------- ------------- -------- ------------------------------------------------------- ------------------------------------ 18 LSST u ExternalData.LSS.LSSTTotalTrans.u TU_FNU_U_LSST_MAG 19 g ExternalData.LSS.LSSTTotalTrans.g TU_FNU_G_LSST_MAG 20 r ExternalData.LSS.LSSTTotalTrans.r TU_FNU_R_LSST_MAG 21 i ExternalData.LSS.LSSTTotalTrans.i TU_FNU_I_LSST_MAG 22 z ExternalData.LSS.LSSTTotalTrans.z TU_FNU_Z_LSST_MAG 23 y ExternalData.LSS.LSSTTotalTrans.y TU_FNU_Y_LSST_MAG --------- ------------- -------- ------------------------------------------------------- ------------------------------------ 24 KIDS u ExternalData.KID.KIDSTotalTrans.u TU_FNU_U_KIDS_MAG 25 g ExternalData.KID.KIDSTotalTrans.g TU_FNU_G_KIDS_MAG 26 r ExternalData.KID.KIDSTotalTrans.r TU_FNU_R_KIDS_MAG 27 i ExternalData.KID.KIDSTotalTrans.i TU_FNU_I_KIDS_MAG --------- ------------- -------- ------------------------------------------------------- ------------------------------------ 28 2MASS J ExternalData.2MA.2MASSTotalRelativeResponse.J TU_FNU_J_2MASS_MAG 29 H ExternalData.2MA.2MASSTotalRelativeResponse.H TU_FNU_H_2MASS_MAG 30 Ks ExternalData.2MA.2MASSTotalRelativeResponse.Ks TU_FNU_KS_2MASS_MAG ========= ============= ======== ======================================================= ==================================== .. DetailedDescEnd