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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20180320T123000
DTEND;TZID=Atlantic/Canary:20180320T133000
UID:iactalks-1153
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1153
CREATED:2018-03-20T12:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:2D kinematic characterization of a representative sample of local (
 U)LIRGs
DESCRIPTION:2D kinematic characterization of a representative sample of loc
 al (U)LIRGs\nDr. Enrica Bellocchi\n\nThe kinematic characterization of dif
 ferent galaxy populations is a keyobservational input to distinguish betwe
 en different galaxy evolutionaryscenarios, since it helps to determine the
  number ratio of rotating disksto mergers at different cosmic epochs. Loca
 l luminous and ultra-luminousinfrared galaxies [(U)LIRGs] offer a unique o
 pportunity to study at highlinear resolution and S/N extreme star forming 
 events and compare themwith those observed at high z.We obtained Very
  Large Telescope (VLT) VIMOS optical integral fieldspectroscopy (IFS) data
  of a sample of 38 local (z < 0.1) (U)LIRGs (50individual objects). Our
  goal is to analyze in detail the kinematics oftheH\alpha ionized gas appl
 ying kinematic criteria able to characterize theevolutionary status of the
 se systems. In particular, the unweighted andweighted kinemetry-based meth
 ods are used to kinematically classify ourgalaxies in disk and merger. We 
 also simulate our systems at z=3 toevaluate how a loss of angular resoluti
 on affects our results.From the kinemetry-based analysis we are able class
 ify our local (U)LIRGsin three distinct kinematic groups according to thei
 r total kinematicasymmetry values (Ktot) as derived when using the weighte
 d (unweighted)method: 1) 25 out of 50 galaxies are kinematically classifie
 d as disk; 2)9 out of 50 galaxies are kinematically classified as mer
 ger; 3) 16 out of 50galaxies lie in the transition region, in which disks 
 and mergers coexist.When we apply our criteria to the high-z simulated sys
 tems, a lower totalkinematic asymmetry frontier value is derived with resp
 ect to that foundlocally. The loss of angular resolution smears out the ki
 nematic features,thus making objects to appear more kinematically regular 
 than actually theyare.
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