J/A+A/567/A68ivo://CDS.VizieR/J/A+A/567/A68doi:10.26093/cds/vizier.35670068CDSDi Teodoro E.M.Fraternali F.2017-12-05T05:10:03Z2014-10-20T10:39:49ZCDS support team

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

cds-question@unistra.frgalaxiesh-i-line-emissionWe quantify the gas accretion rate from minor mergers onto star-forming galaxies in the local Universe using HI observations of 148 nearby spiral galaxies (WHISP sample). We developed a dedicated code that iteratively analyses HI data-cubes, finds dwarf gas-rich satellites around larger galaxies, and estimates an upper limit to the gas accretion rate. We found that 22% of the galaxies have at least one detected dwarf companion. We made the very stringent assumption that all satellites are going to merge in the shortest possible time, transferring all their gas to the main galaxies. This leads to an estimate of the maximum gas accretion rate of 0.28M_{sun}_/yr, about five times lower than the average star formation rate of the sample. Given the assumptions, our accretion rate is clearly an overestimate. Our result strongly suggests that minor mergers do not play a significant role in the total gas accretion budget in local galaxies.Astron. Astrophys., 567, A68-68 (2014)https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/567/A68CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/390/863 : CCD R Photometry of WHISP Dwarf Galaxies (Swaters, 2002)J/A+A/442/137 : HI observations of WHISP disk galaxies (Noordermeer+, 2005)J/MNRAS/416/2415 : Morphological parameters of WHISP galaxies (Holwerda+, 2011)J/MNRAS/416/2437 : Quantified H I morphology of WHISP sample (Holwerda+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/567/A68https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/567/A68http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/567/A68https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/567/A68https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/567/A68http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/567/A68GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/567/A68/tablea1 (Global properties of the main galaxies selected from the WHISP sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/567/A68/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/567/A68/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/567/A68/tablea1?GETtext/xml+votable180.050000true2.60782525.83179720.0055555555555555566/896 909 922 932 942 975 1114 1886 2013 2121 2201 2215 2218 2254 2320 2347 2351 2359 2362 2370 2374 2379-2380 2400 2636 2687 2856 2866 3085 3120 3446 3516 3519 3583 3860 3910 3922 4469 4511 4731 4953 5061 5142 5183 5198 5200 5306 5308 5332 5482 5503 5545 5581 5591 5596 5610 5629 5639 5715 5793 5818 5982 5995 6013 6034 6037 6050 6063 6411 6448 6619 6649 6825 6948 7110 7132 7374 7398 7485 7523 7655 7659 7815 7824 7869 7882 7957 8064 8167 9011 9220 9277 9869 10475 10490 10592 10621 10628 10662 10674 10684 10723 10892 10927 10930 10976 10990-10991 11000 11173 11372 11389 11392 11460 11582 11724 11750 12122 13162 13472 13489 13514 13672 13948 14033 14777 14935 15068 16050 16120 16194 20060 20254 20270 20342 20353 20409 28091 28123 28463 28496 28529 28538 28593 28666 32729https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/567/A68?format=asciiRadiodefaultJ/A+A/567/A68/tablea1Global properties of the main galaxies selected from the WHISP sampler_Mb[4]? Origin of Mb (2)meta.ref;pos.frameintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintUGCUGC galaxy numbermeta.id;meta.mainintONameOther name of the galaxymeta.idcharDistAdopted distance (1)Mpcpos.distance;pos.heliocentricfloatr_Dist[1/3]? Origin of the distance (2)meta.ref;pos.frameintnullableR25[0.2/6] Radius R25 (in arcmin) (3)arcminphys.angSizefloatr25[2/54] Radius R25 (in kpc) (3)kpcphys.size.radiusinti[0/90] Inclination angle derived from the axis ratio in B band as listed in HyperLEDAdegsrc.orbital.inclination;pos.posAngintVsysSystemic velocity (4)km/sphys.velocintW20HI-line width at the 20% of the peak flux of the global HI-line profile (this work)km/sspect.line.eqWidthintMHITotal HI mass estimated in this work (in 10^9^M_{sun}_)GsolMassphys.massfloatMbAdopted total baryonic mass (in 10^9^M_{sun}_)GsolMassphys.massfloatSFRStar formation rate calculated from the 60um and 100um IRAS fluxessolMass/yrphys.SFRfloatl_dMHI/dtLimit flag on dMHI/dtmeta.code.errorchardMHI/dtTotal gas accretion rate from minor mergers estimated in this work, including detectable and "hidden" accretionsolMass/yrphys.mass.lossfloatSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.refchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main