J/A+A/670/A63ivo://CDS.VizieR/J/A+A/670/A63doi:10.26093/cds/vizier.36700063CDSVasquez-Bustos P.Argudo-Fernandez M.Grajales-Medina D.,Duarte Puertas S.Verley S.2024-11-28T20:02:12Z2023-02-06T08:51:43ZCDS support team

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

cds-question@unistra.frgalaxiesgalaxy-classification-systemsgalaxy-kinematicsvisible-astronomyThe environments where galaxies reside affects their evolutionary histories. Galaxy triplets (systems composed of three physically bound galaxies) are one of simplest groups of galaxies, and are therefore excellent laboratories to study evolutionary mechanisms where effects of the environment are minimal. We present a statistical study of the dynamical properties of isolated galaxy triplets as a function of their local and large-scale environments. To explore the connection of the dynamical evolution on the systems with the evolution of the galaxies composing the triplets, we consider observational properties such as morphology and star formation rate (SFR). We used the SDSS-based catalogue of Isolated Triplets (SIT), which contains 315 triplets. We classified each triplet according to galaxy morphologies and defined a parameter Qtrip to quantify the total local tidal strengths in the systems. To quantify the dynamical stage of the system we used the parameters of harmonic radius RH , velocity dispersion {sigma}_vr_, crossing time H_0_t_c_, and virial mass M_vir_. Triplets composed of three early-type galaxies present the smallest R_H_, indicating that they are in general more compact than triplets with one or more late-type galaxies. Among triplets with low values of R_H_ and H_0_t_c_, SIT triplets with Q_trip_<-2 are relaxed systems that are more dynamically evolved, while triplets with Q_trip_>-2 show compact configurations due to interactions within the system, such as ongoing mergers. We found that there is no dominant galaxy in triplets in terms of properties of stellar populations such as global colour and SFR. Moreover, the global SFR in isolated triplets composed of two or more early-type galaxies increases with the stellar mass ratio of the galaxies with respect to the central galaxy, therefore the system is globally 'rejuvenated'.2023A&A...670A..63Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/670/A63CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/578/A110 : Isolated galaxies, pairs and triplets (Argudo-Fernandez+ 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/670/A63https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/670/A63http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/670/A63https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/670/A63https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/670/A63http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/670/A63GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/670/A63/table1 (Dynamical parameters, tidal strength, and morphology for SIT triplets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/670/A63/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/670/A63/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/670/A63/table1?GETtext/xml+votable180.050000true171.3154-2.07610.0055555555555555566/545 4101 4145 4203 4215 4251 4258 4261 4269 4276 4284 4311 4345 4347 4387 4418 4469 4490 4496 4529 4550 4576 4581 4596 4624 4695 4697 4704 4709 4766 4837 4854 4887 4916 4931 4970 5031 5093 5121 5128 5178 5195 5203 5280 5320 5362 5369 5375 5378 5414 5420 5474 5476 5485 5488 5513 5519 5552 5555 5587 5597 5604 5647 5659 5664 5712 5752 5799 5885 5889 5920 5992 5997-5998 6110 6124 6130 6226 6448 6450 6459 6479 6481 6502 6568 6581 6615 6641 6647 7198 7204 7223 7228 7231 7238 7259 7342 7369 7375 7415 7454 7558 8192 8255 8282 8284 8298 8302 8318 8331 8395 8405 8407 8443 8484 8509 8515 8561 8609 8627 8642 8667 8670-8671 8708 8712 8723 8725 8746-8747 8761 8772 8775-8776 8781 8801 8805 8816 8844 8851 8862 8877 8881 8886 8984 9014 9019 9081 9170 9187 9190 9197 9244 9252 9272 9326 9440 9468 9634 9647 9731 9762 9792 9804 9834 9859 9909 9927 10386 10391 10396 10426 10498 10538 10595 10609 10681 10699 10707 10722 10829 10841 10944 10948 10958 11010 11015 11021 11040 11068-11069 11114 11121 11198 11243 11257-11258 11274 11299 11365 11369 11418 11424 11451 11454 11502 11608 11778 11783 11821 11825 11875 18085 18385 18416 18793 18845 19035 19091 19097 19647 20004-20005 21847 23209 23218 25839 25918 26006 26032 26082 26086 26109 26167-26168 26181 26202 26295 26313 26334 26336 26376 26419 26432 26455 26463 26486 26507 26534 26537 26545 26576 26585 26592 26608 26976 26995 27118-27119 27125 27229 27333 27358-27359 27413 27439 27458 27476 27504 27563 27579 27639 27670 27705 27717 27742 27757 27892 27918 27951 27988 28063 28069 28118 28198 28207 28241 28300 28324 28378 28426 28456 28459 28479 28489 28535 28660 28662 31376 31387 31422 31466 31534 31637 31650 31692 36793 49011 49013 49085https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/670/A63?format=asciiOpticaldefaultJ/A+A/670/A63/table1Dynamical parameters, tidal strength, and morphology for SIT tripletsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSIT[1/315] Isolated triplet identificationmeta.id;meta.mainintRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainQtripTidal strength estimation of the triplet due to member galaxiessrc.morph.paramfloatRHHarmonic radiuskpcphys.size.radiusfloatSigmaVelocity dispersionkm/sphys.veloc.dispersionfloatH0tcCrossing timetime.crossingfloatlog(Mvir)Virial masslog(solMass)phys.massfloatCatMorphology classification of the isolated triplet (1)src.morph.typechar