J/MNRAS/394/375ivo://CDS.VizieR/J/MNRAS/394/375doi:10.26093/cds/vizier.73940375CDSNegrello M.Serjeant S.Pearson C.Takagi T.Efstathiou A.Goto T.,Burgarella D.Jeong W.-S.Im M.Lee H.M.Matsuhara H.Oyabu S.,Wada T.White G.2024-07-08T20:15:36Z2010-09-13T11:03:03ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-sourcesredshiftedinfrared-photometrymillimeter-astronomyphotometrysubmillimeter-astronomyWe investigate the photometric redshift accuracy achievable with the AKARI infrared data in deep multiband surveys, such as in the North Ecliptic Pole field. We demonstrate that the passage of redshifted polycyclic aromatic hydrocarbons (PAH) and silicate features into the mid-infrared wavelength window covered by AKARI is a valuable means to recover the redshifts of starburst galaxies. To this end, we have collected a sample of ~60 galaxies drawn from the Great Observatories Origins Deep Survey-North Field with spectroscopic redshift 0.5<~zspec<~1.5 and photometry from 3.6 to 24um, provided by the Spitzer, Infrared Space Observatory and AKARI satellites. The infrared spectra are fitted using synthetic galaxy spectral energy distributions which account for starburst and active nuclei emission. For ~90 per cent of the sources in our sample, the redshift is recovered with an accuracy |zphot-zspec|/(1+zspec)~<10%. A similar analysis performed on a set of simulated spectra shows that the AKARI infrared data alone can provide photometric redshifts accurate to |zphot-zspec|/(1+zspec)~10% (1sigma) at z~<2 . At higher redshifts, the PAH features are shifted outside the wavelength range covered by AKARI and the photo-z estimates rely on the less prominent 1.6um stellar bump; the accuracy achievable in this case on (1+z) is ~10-15%, provided that the active galactic nuclei contribution to the infrared emission is subdominant. Our technique is no more prone to redshift aliasing than optical-ultraviolet photo-z, and it may be possible to reduce this aliasing further with the addition of submillimetre and/or radio data.2009MNRAS.394..375Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/394/375CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/297 : AKARI/IRC mid-IR all-sky Survey (ISAS/JAXA, 2010)II/298 : AKARI/FIS All-Sky Survey Point Source Cat. (ISAS/JAXA, 2010)J/A+A/342/313 : ISO HDF observations from PRETI method (Aussel+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/394/375https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/394/375http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/394/375https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/394/375https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/394/375http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/394/375GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/394/375/sources (List of IR sources with spectroscopic redshift, IR fluxes and best SED fit parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/394/375/sources?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/394/375/sources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/394/375/sources?GETtext/xml+votable180.050000true189.2012562.24079440.0055555555555555566/11252https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/394/375?format=asciiOpticalInfraredRadiodefaultJ/MNRAS/394/375/sourcesList of IR sources with spectroscopic redshift, IR fluxes and best SED fit parameterszpPhotometric redshiftsrc.redshift.photfloatzsSpectroscopic redshiftsrc.redshiftfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDSequential number (<[NSP2009] IDNN> in Simbad)meta.recordcharn_ID[*] Source with uncertain IR counterpart (1)meta.notecharE_zpError on zp (upper value)(99% confidence limit)stat.error;stat.maxfloate_zpError on zp (lower value)(99% confidence limit)stat.errorfloatRchi2Minimum reduced {chi}^2^ ({chi}^2^(min)/{nu})stat.fit.chi2floatvNumber of degrees of freedom {nu}stat.fit.dofintl_Pchi2[< ] Limit flag on Pchi2meta.code.errorcharPchi2Probability associated to the minimum {chi}^2^stat.probabilityfloatAgeAge of the starburstGyrtime.agefloatThetaCompactness factor (4)meta.code;phys.sizefloatExt[MW SMC LMC] Type of extinction curvemeta.codecharview? Viewing angle {theta}_view_ of the AGN dust torusdegsrc.orbital.inclinationintnullablelogLSBLuminosity contributed by the starburst component (2)log(solLum)phys.luminosityfloatlogLAGN? Luminosity contributed by the AGN component (2)log(solLum)phys.luminosityfloatnullablezp2Second photometric redshift (3)src.redshift.photfloatE_zp2Error on zp2 (upper value) (3)stat.error;stat.maxfloate_zp2Error on zp2 (lower value) (3)stat.errorfloatRchi22Second minimum reduced {chi}^2^ (3)stat.fit.chi2floatv2Second number of degrees of freedom (3)stat.fit.dofintl_Pchi22[< ] Limit flag on Pchi22 (3)meta.code.errorcharPchi22Probability associated to the second minimum {chi}^2^ (3)stat.probabilityfloatRAJ2000Spectroscopic right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Spectroscopic declination (J2000)pos.eq.dec;meta.mainF3.6Flux at 3.6umuJyphot.mag;em.IR.3-4umfloatE_F3.6Error on F3.6(upper limit)uJystat.error;stat.maxfloate_F3.6Error on F3.6(lower limit)uJystat.errorfloatF4.5Flux at 4.5umuJyphot.mag;em.IR.4-8umfloatE_F4.5Error on F4.5(upper limit)uJystat.error;stat.maxfloate_F4.5Error on F4.5(lower limit)uJystat.errorfloatF5.8Flux at 5.8umuJyphot.flux.density;em.IR.4-8umfloatE_F5.8Error on F5.8(upper limit)uJystat.error;stat.maxfloate_F5.8Error on F5.8(lower limit)uJystat.errorfloatF8.0Flux at 8.0umuJyphot.flux.density;em.IR.8-15umfloatE_F8.0Error on F8.0(upper limit)uJystat.error;stat.maxfloate_F8.0Error on F8.0(lower limit)uJystat.errorfloatF24Flux at 24umuJyphot.flux.density;em.IR.15-30umfloatE_F24Error on F24(upper limit)uJystat.error;stat.maxfloate_F24Error on F24(lower limit)uJystat.errorfloatl_F6.5Limit flag on F6.5meta.code.errorcharF6.5? Flux at 6.5umuJyphot.flux.density;em.IR.4-8umintnullableE_F6.5? Error on F6.5(upper limit)uJystat.error;stat.maxintnullablee_F6.5? Error on F6.5(lower limit)uJystat.errorintnullablel_F15Limit flag on F15meta.code.errorcharF15? Flux at 15umuJyphot.flux.density;em.IR.8-15umintnullableE_F15? Error on F15(upper limit)uJystat.error;stat.maxintnullablee_F15? Error on F15(lower limit)uJystat.errorintnullableF11Flux at 11umuJyphot.flux.density;em.IR.8-15umfloatE_F11Error on F11(upper limit)uJystat.error;stat.maxinte_F11Error on F11(lower limit)uJystat.errorintF18Flux at 18umuJyphot.flux.density;em.IR.8-15umintE_F18Error on F18(upper limit)uJystat.error;stat.maxinte_F18Error on F18(lower limit)uJystat.errorintF16? Flux at 16umuJyphot.flux.density;em.IR.8-15umintnullableE_F16? Error on F16(upper limit)uJystat.error;stat.maxintnullablee_F16? Error on F16(lower limit)uJystat.errorintnullableONameHDF name (HDF_PMN_NN, <[ACE99] HDF PMN.NN> in Simbad)meta.id;meta.mainchar