J/A+A/553/A91ivo://CDS.VizieR/J/A+A/553/A91doi:10.26093/cds/vizier.35530091CDSFossati M.Gavazzi G.Savorgnan G.Fumagalli M.Boselli A.,Gutierrez L.Hernandez Toledo H.Giovanelli R.Haynes M.P.2017-11-28T13:21:13Z2013-05-15T10:21:37ZCDS support team

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

cds-question@unistra.frgalaxy-clustersh-i-line-emissiongalaxy-classification-systemsWe present the analysis of the galaxy structural parameters from H{alpha}3, an H{alpha} narrow-band imaging follow-up survey of ~800 galaxies selected from the HI Arecibo Legacy Fast ALFA Survey (ALFALFA) in the Local Supercluster, including the Virgo cluster, and in the Coma Supercluster. Taking advantage of H{alpha}3 which provides the complete census of the recent star-forming, HI-rich galaxies in the local universe, we aim to investigate the structural parameters of both the young (<10Myr) and the old (>1Gyr) stellar populations. By comparing the sizes of these stellar components we investigated the spatial scale on which galaxies are growing at the present cosmological epoch and the role of the environment in quenching the star-formation activity. We computed the concentration, asymmetry, and clumpiness (CAS) structural parameters both for recently born and old stars. To quantify the sizes we computed half-light radii and a new parameter dubbed EW/r based on the half-light radius of the H{alpha} Equivalent Width map. To highlight the environmental perturbation, we adopt an updated calibration of the HI-deficiency parameter that we use to divide the sample in unperturbed and perturbed galaxies. The concentration index computed in the r band depends on the stellar mass and on the Hubble type, these variables being related since most massive galaxies are bulge dominated thus most concentrated. Going toward later spirals and irregulars both the concentration index and the mass decrease along with the bulge-to-disk ratio. Blue Compact dwarfs represent an exception since they have similar mass but they are more concentrated than dwarf irregulars. The asymmetry and the clumpiness increase along the spiral sequence up to Sc-Sd but they decrease going toward dwarfs whose light distribution is smooth and more symmetric. When measured on H{alpha} images, the CAS parameters do not exhibit obvious correlations with Hubble type. Irrespective of whether we used the ratio between effective radii or the EW/r parameter, we found that the concentration index is the main parameter that describes the current growth of isolated galaxies but, for a fixed concentration, the stellar mass plays a second order role. At the present epoch, massive galaxies are growing inside-out, conversely the dwarfs are growing on the scale of their already assembled mass.2013A&A...553A..91Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/553/A91CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/545/A16 : Halpha3. Catalog and SFR in Virgo cluster (Gavazzi+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/553/A91https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/553/A91http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/553/A91https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/553/A91https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/553/A91http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/553/A91GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/553/A91/tablea1 (Structural parameters of Local Supercluster galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/553/A91/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/553/A91/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/553/A91/tablea1?GETtext/xml+votable180.050000true165.0114.8411110.005555555555555556Cone search capability for table J/A+A/553/A91/tablea2 (Structural parameters of Coma Supercluster galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/553/A91/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/553/A91/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/553/A91/tablea2?GETtext/xml+votable180.050000true151.3937527.5144440.0055555555555555565/2231 2245 2594 2599 2602 6582 6590 6928 6930-6932 6941 6943 6964-6965 6985 7036-7038 7093 7124 6/5140 5144 5146 5148-5149 5156-5157 5161 5164-5165 5168 5170-5171 5173 5176-5177 5179 5185-5187 5189 5192-5193 5248-5249 5255 5257 8234-8235 8243 8256 8282 8287 8313 8320 8327 8330 8335 8355 8359-8360 8371 8378 8382 8394 8416 8425 8458-8460 8473 8480 8485 8492 8494 8655 8662 8666-8667 8670-8671 8679 8683 8696 8721 8723 8744 8747 8917 8919-8922 8936 8938-8939 8944-8945 8947 8951 8953 8987 8989 8996-8998 9001-9002 9009 9029 9090 9098-9099 10242 10259 10261-10262 10267 10269-10270 10282-10285 10288 10290 10292 10295-10296 10305 10308 10310 10312-10313 10320 10336 10368-10370 10374-10375 10380 10382-10384 10389 10391 10393-10395 10400-10402 10404 10412 10414 10432 10434 10440 10754 26068-26069 26076 26090-26091 26093 26303 26319 26323 26339-26340 26342-26344 26346-26347 26351 26353-26354 26364-26365 26411-26412 26423 26432 26440 26451 26461 26466 26472 26502 26517-26518 26523 26528 26536 26544 26554 26592 26595 27087 27091 27098 27130 27132 27472 27477 27479 27487 27669-27671 27677 27697 27716 27718-27719 27734 27736 27738-27740 27743 27745 27747-27748 27750-27751 27757 27759 27761 27763 27770-27771 27789 27811 27814 27818 27820 27823 27826 27828 27838 27841 27855 27865 27868-27869 27876 27878 27883-27884 27899 27903-27905 27909 27913-27914 27916-27918 27921-27922 27924 27926 27929 27934 27937-27939 27945-27949 27967-27968 27989-27990 27998 28002 28021 28025-28026 28032-28033 28035 28046 28049 28059 28066 28069-28070 28072 28076 28085 28087 28089-28090 28098-28099 28107 28112 28117-28119 28123 28127 28141 28156 28159-28160 28162 28165-28166 28168 28173 28178 28184 28188 28201 28208 28242 28246-28247 28249 28251 28254-28255 28263 28272 28278-28279 28284 28371 28377 28379 28381-28383 28388 28392 28395 28399 28401 28404 28406 28409 28420 28422 28428 28432 28434 28437-28439 28441-28444 28446-28447 28451 28453-28456 28459-28461 28463-28464 28466-28467 28471 28474 28478 28480-28482 28485 28488 28493 28495 28500 28503 28507 28512 28527 28530 28544-28545 28557 28572 28576 28610 31455 31469 31475https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/553/A91?format=asciiOpticalRadiodefaultJ/A+A/553/A91/tablea1Structural parameters of Local Supercluster galaxiesAGC? AGC namemeta.id;meta.mainintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVCC? VCC (Cat. J/AJ/90/1681) namemeta.idintnullableRAJ2000Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainR.r? r-band effective radiusarcsecphys.angSizefloatnullableR.Ha? H{alpha} effective radiusarcsecphys.temperature.effective;spect.linefloatnullableR.EW? Effective radius computed from the H{alpha} Equivalent Width (EW) maparcsecphys.angSize;meta.modelledfloatnullableC.r[1.8/4.7] r-band concentration index (G1)phys.size;arith.ratiofloatA.r[0/1] r-band asymmetry index (G2)src.morph.paramfloatS.r[-0.2/1.4] r-band clumpiness index (G3)src.morph.paramfloatC.Ha[0.2/6.5]? H{alpha} concentration index (G1)phys.size;arith.ratiofloatnullableA.Ha[-0.03/1.24]? H{alpha} asymmetry index (G2)src.morph.paramfloatnullableS.Ha[-0.6/3.0]? H{alpha} clumpiness index (G3)src.morph.paramfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.ref.urlcharJ/A+A/553/A91/tablea2Structural parameters of Coma Supercluster galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAGC? AGC namemeta.id;meta.mainintnullableCGCG? CGCG (Cat. VII/49) namemeta.idintnullableRAJ2000Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainR.r? r-band effective radiusarcsecphys.angSizefloatnullableR.Ha? H{alpha} effective radiusarcsecphys.temperature.effective;spect.linefloatnullableR.EW? EW(H{alpha}) effective radiusarcsecphys.angSizefloatnullableC.r[1.8/4.7] r-band concentration index (G1)phys.size;arith.ratiofloatA.r[0/1] r-band asymmetry index (G2)src.morph.paramfloatS.r[-0.2/1.4] r-band clumpiness index (G3)src.morph.paramfloatC.Ha[0.2/6.5]? H{alpha} concentration index (G1)phys.size;arith.ratiofloatnullableA.Ha[-0.03/1.24]? H{alpha} asymmetry index (G2)src.morph.paramfloatnullableS.Ha[-0.6/3.0]? H{alpha} clumpiness index (G3)src.morph.paramfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.ref.urlchar