J/A+AS/129/583ivo://CDS.VizieR/J/A+AS/129/583CDSFasano G.Filippi M.Bertola F.1998-05-19T07:44:31Z1998-05-19T07:44:04ZCDS support team

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

cds-question@unistra.frgalaxiesphotometrysurface-photometryThe detailed surface photometry of a sample of early-type galaxies in the Hubble Deep Field is presented as part of a long-term project aimed to settle strong observational constraints to the theories modelling the evolution of elliptical galaxies from the early stages. The sample has been extracted, in the V_606_ band, from the database provided by the ESO-STECF-HDF Group (Couch, 1996, <http://ecf.hq.eso.org>). The selection criteria involve the total magnitude, the number of pixels detected above the background level and an automatic star/galaxy classifier. Moreover, form visual inspection of the frames, we excluded the galaxies showing unambiguous late-type morphology. The analysis of the luminosity and geometrical profiles, carried out on the 162 candidates obeying our selection criteria, resulted in a list of 99 'bona fide' early-type galaxies, for which accurate total magnitudes and effective radii were computed on the basis of the equivalent luminosity profiles. The comparison with the magnitudes given by Williams et al. (1996, Cat. <J/AJ/112/1335>) indicates that the automated photometry tends to underestimate the total luminosity of the ellipticals. The luminosity profiles of most of galaxies in our sample follow fairly well the de~Vaucouleurs law ('Normal' profiles). However, a relevant fraction of galaxies, even following the r^1/4^ law in the main body light distribution, exhibit in the inner region a flattening of the luminosity profile not attributable to the PSF (`Flat' profiles) or, in some cases, a complex (multi-nucleus) structure (`Merger' profiles). A statistically significant correlation is found between the shapes of the luminosity profiles and the ellipticity distribution. In particular, the average ellipticity of galaxies belonging to the `Flat' and `Merger' classes is significantly higher than that of the `Normal' galaxies. Finally, even taken into account the relevant uncertainty of the outer position angle profiles, the amount of isophotal twisting of HDF ellipticals turns out to be significantly larger with respect to that of the local samples.1998A&AS..129..583Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/129/583CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/112/1335 : Hubble Deep Field observations (Williams+ 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/129/583https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/129/583http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/129/583https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/129/583https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/129/583http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/129/583GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+AS/129/583/name (List of the 99 galaxies in the sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/129/583/name?https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/129/583/name?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/129/583/name?GETtext/xml+votable180.050000true189.16416762.2033330.005555555555555556HSThttps://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+AS/129/583?format=asciiOpticaldefaultJ/A+AS/129/583/table1Galaxy parameterse_Cos3Estimated error of Cos3stat.errordoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharprimarymagV_606 surface brightness (ST system)mag.arcsec**-2phot.mag.sbfloatXposX coord. of the centerpixpos.cartesian.x;instr.detfloatYposY coord. of the centerpixpos.cartesian.y;instr.detfloatRadiusRadius along the major axisarcsecphys.angSize;srcfloatEpsEllipticity = 1-b/asrc.ellipticityfloatPA[-211/165] Position Angle from N to Wdegpos.posAngfloatSin3? {3[theta] term in Fourier expansion}*10 (1)stat.FourierfloatnullableCos3? {3[theta] term in Fourier expansion}*10 (1)stat.FourierfloatnullableSin4? {4[theta] term in Fourier expansion}*10 (1)stat.FourierfloatnullableCos4? {4[theta] term in Fourier expansion}*10 (1)stat.Fourierfloatnullablee_EpsEstimated error of the ellipticitystat.errorfloate_PAEstimated error of the position angledegstat.errorfloate_Sin3Estimated error of Sin3stat.errordoublee_Sin4Estimated error of Sin4stat.errordoublee_Cos4Estimated error of Cos4stat.errordoublee_magEstimated error of surface brightnessmag.arcsec**-2stat.errordoubleJ/A+AS/129/583/nameList of the 99 galaxies in the samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharprimaryRA2000Right ascension (2000.0)pos.eq.ra;meta.mainDE2000Declination signpos.eq.dec;meta.mainWBD96Simbad denomination ([WBD96] N-NNN.nnnn)meta.idchar