European Large-Area ISO Survey (ELAIS) Final Band-Merged Catalog ELAISFBMC ivo://nasa.heasarc/elaisfbmc NASA/GSFC HEASARC Rowan-Robinson et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This table contains the final band-merged European Large-Area ISO Survey (ELAIS) Catalog at 6.7, 15, 90 and 175 microns (µm), and the associated data at U, g', r', i', Z, J, H, K and 20 cm. The origin of the survey, infrared and radio observations, data-reduction and optical identifications are briefly reviewed in the reference paper, and a summary of the area covered and the completeness limit for each infrared band is given. A detailed discussion of the band-merging and optical association strategy is given in the paper. The total catalog consists of 3762 sources. 23% of the 15-um sources and 75% of the 6.7-um sources are stars. In the paper, for extragalactic sources observed in three or more infrared bands, color-color diagrams are presented and discussed in terms of the contributing infrared populations. Spectroscopic redshifts are tabulated, where available. For the N1 and N2 areas, the Isaac Newton Telescope (INT) ugriz Wide Field Survey permits photometric redshifts to be estimated for galaxies and quasars. These agree well with the spectroscopic redshifts, within the uncertainty of the photometric method (~10% in (1 +z) for galaxies). There is a high proportion of ultraluminous infrared galaxies (ULIRGs, with log<sub>10</sub> of 1-1000 um luminosity L<sub>ir</sub> > 12.22) in the ELAIS Catalog (14% of 15-um galaxies with known z), many with Arp 220-like SEDs. 10% of the 15-um sources are genuine optically blank fields to r'= 24: these must have very high infrared-to-optical ratios and probably have z > 0.6, so are high-luminosity dusty starbursts or Type 2 AGN. Nine hyperluminous infrared galaxies (L<sub>ir</sub> > 13.22) and nine extremely red objects (EROs) (r-K > 6) are found in the survey. The latter are interpreted as ultraluminous dusty infrared galaxies at z ~ 1. The large numbers of ultraluminous galaxies imply very strong evolution in the star formation rate between z = 0 and 1. There is also a surprisingly large population of luminous (L<sub>ir</sub> > 11.5), cool (cirrus-type SEDs) galaxies, with L<sub>ir</sub> - L<sub>opt</sub> > 0, implying A<sub>V</sub> > 1. This table contains the total catalog of 3762 ELIAS band-merged sources. This table was created by the HEASARC in October 2012 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/MNRAS/351/1290">CDS Catalog J/MNRAS/351/1290</a> files catalog.dat (3523 sources) and unassoc.dat (239 sources). It was last updated in November 2012 to correct the 6.7-micron flux density values for 14 entries using data provided directly from the primary author. This is a service provided by NASA HEASARC . 2004MNRAS.351.1290R https://heasarc.gsfc.nasa.gov/W3Browse/all/elaisfbmc.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=elaisfbmc& GET text/xml 180 99999 true 7.64854167 -44.61894444 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=elaisfbmc GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_elaisfbmc&Action=More+Options&Action=Parameter+Search&ConeAdd=1 ISO 0.0166666666666667 Infrared public elaisfbmc European Large-Area ISO Survey (ELAIS) Final Band-Merged Catalog name Source Designation meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable flux_20_cm 20-cm (1.5-GHz) Flux mJy phot.flux.density;em.radio.750-1500MHz double nullable flux_20_cm_error RMS Uncertainty in 20-cm Flux mJy stat.error;phot.flux.density;em.radio.750-1500MHz double nullable flux_15_um 15-Micron Flux mJy phot.flux.density;em.IR.15-30um double nullable flux_6p7_um 6.7-Micron Flux mJy phot.flux.density;em.IR.4-8um double nullable flux_6p7_um_error RMS Uncertainty in 6.7-Micron Flux mJy stat.error;phot.flux.density;em.IR.4-8um double nullable imag WFS i-Prime Magnitude mag phot.mag;em.opt.I double nullable imag_error RMS Uncertainty in i-Prime Magnitude mag stat.error;phot.mag;em.opt.I double nullable optical_assoc_flag Flag [0-9] Indicates Optical Association meta.code short nullable hmag_error RMS Uncertainty in H Magnitude mag stat.error;phot.mag;em.IR.H double nullable rmag_star_gal_flag WFS Star/Galaxy Flag in r-Prime Band meta.code short nullable rmag WFS r-Prime Magnitude mag phot.mag;em.opt.R double nullable redshift Best Estimated Redshift, Spectroscopic If Available, Photometric Otherwise src.redshift double nullable hmag H Magnitude mag phot.mag;em.IR.H double nullable ir_sed_type_2 Infrared SED Type [0-6] meta.code;src.class short nullable optical_assoc_relbty Reliability of Optical Association meta.code double nullable umag_error RMS Uncertainty in U Magnitude mag stat.error;phot.mag;em.opt.U double nullable flux_175_um 175-Micron (1700-GHz) Flux mJy phot.flux.density;em.mm.1500-3000GHz double nullable radio_ir_assoc_flag Flag [0-9] Indicates Radio/IR Association meta.code short nullable sextractor_rmag Sextractor r-Prime Magnitude mag phot.mag;em.opt.R double nullable agn_torus_luminosity AGN Dust Torus Luminosity (If Applicable) log(Solar_Luminosity) phys.luminosity double nullable flux_90_um 90-Micron (3300-GHz) Flux mJy phot.flux.density;em.IR.60-100um double nullable sextractor_sg_class Sextractor Star/Galaxy Classification (0.0 for Galaxy, >0.7 for Stellar Image) meta.code double nullable phot_sed_type_no_abs Photometric Spectral Energy Distribution (SED) Type [0-9], Assuming AV=0 meta.code;src.class short nullable rmag_error RMS Uncertainty in r-Prime Magnitude mag stat.error;phot.mag;em.opt.R double nullable flux_6p7_um_flag 6.7-Micron Reliability Flag meta.code;phot.flux.density;em.IR.4-8um short nullable spect_redshift Spectroscopic Redshift src.redshift double nullable kmag_error RMS Uncertainty in K Magnitude mag stat.error;phot.mag;em.IR.K double nullable imag_star_gal_flag WFS Star/Galaxy Flag in i-Prime Band meta.code short nullable ra_offset_optical Positional Offset of Optical Identification in Right Ascension arcsec pos.angDistance double nullable optical_luminosity Optical Luminosity log(Solar_Luminosity) phys.luminosity;em.opt double nullable ref_redshift Reference Code for Redshift meta.ref;src.redshift short nullable jmag_error RMS Uncertainty in J Magnitude mag stat.error;phot.mag;em.IR.J double nullable ir_luminosity Infrared Luminosity log(Solar_Luminosity) phys.luminosity;em.IR double nullable vmag_absorption_error Error Parameter for Free Fit for A_V_ stat.error;phys.absorption;em.opt.V double nullable ra_optical Optical Right Ascension degree pos.eq.ra;em.opt double nullable gmag_star_gal_flag WFS Star/Galaxy Flag in g-Prime Band meta.code short nullable bii Galactic Latitude degree pos.galactic.lat double nullable jmag J Magnitude mag phot.mag;em.IR.J double nullable phot_sed_type_free_abs Photometric SED Type [0-8], Allowing Free Choice of Dust Extinction AV meta.code;src.class short nullable zmag WFS Z Magnitude mag phot.mag;em.opt double nullable snr_90_um Signal-to-Noise Ratio at 90 Microns stat.snr;phot.flux.density;em.IR.60-100um double nullable zmag_error RMS Uncertainty in Z Magnitude mag stat.error;phot.mag;em.opt double nullable umag Wide Field Survey (WFS) U Magnitude mag phot.mag;em.opt.U double nullable gmag_error RMS Uncertainty in g-Prime Magnitude mag stat.error;phot.mag;em.opt double nullable ref_jmag Photometry Reference meta.ref;phot.mag;em.IR.J short nullable phot_log_1pz_free_abs Second Value of Logarithm(1+zph), Allowing Free Choice of Dust Extinction AV src.redshift double nullable object_type Type [0-8] of Object from Spectroscopy src.class short nullable kmag K Magnitude mag phot.mag;em.IR.K double nullable offset_90_um Positional Offset of 90-Micron Position arcsec pos.angDistance double nullable vmag_absorption Absorption in V Band (Free Fit for A_V_) mag phys.absorption;em.opt.V double nullable class Browse Object Classification src.class short nullable flux_90_um_error RMS Uncertainty in 90-Micron Flux mJy stat.error;phot.flux.density;em.IR.60-100um double nullable snr_15_um Signal-to-Noise Ratio at 15 Microns stat.snr;phot.flux.density;em.IR.15-30um double nullable optical_assoc_prob Probability of Optical Association (Threshold 0.7) meta.code double nullable tot_offset_optical Total Positional Offset of Optical Identification arcsec pos.angDistance double nullable offset_175_um Positional Offset of 175-Micron Position arcsec pos.angDistance double nullable phot_log_1pz_no_abs Logarithm(1+zph) (Photometric Redshift), Derived Assuming AV=0 src.redshift double nullable gmag WFS g-Prime Magnitude mag phot.mag;em.opt double nullable dec_offset_optical Positional Offset of Optical Identification in Declination arcsec pos.angDistance double nullable dec_optical Optical Declination degree pos.eq.dec;em.opt double nullable umag_star_gal_flag WFS Star/Galaxy Flag in U Band (-1 for Stellar image, 1 for extended image) meta.code short nullable snr_175_um Signal-to-Noise Ratio at 175 Microns stat.snr;phot.flux.density;em.mm.1500-3000GHz double nullable zmag_star_gal_flag WFS Star/Galaxy Flag in Z Band meta.code short nullable lii Galactic Longitude degree pos.galactic.lon double nullable flux_175_um_error RMS Uncertainty in 175-Micron Flux mJy stat.error;phot.flux.density;em.mm.1500-3000GHz double nullable ir_sed_type_1 Infrared SED Type [0-4] (Figures 26-29) meta.code;src.class short nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable