BEGIN:VCALENDAR VERSION:2.0 PRODID:-//https://astronomia.uc.cl/2jucext1/institutoastrofisica///NONSGML kigkonsult.se iCalcreator 2.10.15// METHOD:PUBLISH BEGIN:VEVENT UID:20260517T161452-04-1071X7je3k@https://astronomia.uc.cl/2jucext1/institu toastrofisica/ DTSTAMP:20260517T201452Z DESCRIPTION: Amelia Stutz \nUniversidad de Concepcion\nCluster formation an d gas kinematics in high mass clouds.\n \;\n \;\nBy observationall y scrutinizing the nearest high mass clouds and\nprotoclusters\, we gain n ew insights into cluster formation physics.\nThe Integral Shaped Filament (ISF) is home to the nearest significant\nprotocluster\, the Orion Nebula Cluster (ONC/M42). \; Based on a high\ndensity of observables of both the gas and stars\, we previously\nproposed the 'slingshot' mechanism\, re quiring that the gas ISF\noscillate ejecting stars. The B-field morphology (possibly helical)\nand strength\, compared with the gas mass distributio n\, indicates that\nmagnetic instabilities may be propagating through the cloud driving\nthe oscillations in the ISF. These may be responsible for t he\nslingshot. \; The gas kinematics exhibit twisting and turning feat ures\nthat may be consistent with rotation and helical structures in the\n dense gas. \; We show that the stellar density follows a Plummer profi le\nwhile the gas follows a cylindrical power law. \; The stellar\ncon tribution to the gravitational field is nearly equal to that of the\ngas a t r=a. \; At all other radii the field is gas-dominated. \; The\nc luster crossing time is ~ 0.5 Myr\, nearly identical to the filament\nosci llation timescale. \; These results reveal an intimate connection\nbet ween the stars and the gas\, such that tidal effects due to filament\nosci llations may set the protocluster structure. \; That is\, the gas\nden sity regulates the star density in the ONC. Meanwhile\, in\nCalifornia clo ud\, which has the same mass as Orion but is at an\nearlier evolutionary s tage (~1/10th the protostars)\, we detect\nrotation in cluster-forming fil ament L1482. \; Results in extragalactic\nsystems show that cloud rota tion is set by the overall galaxy rotation\nand not consistent with e.g. c loud-collision models. Combined\, these\nresults may indicate that velocit y gradients in Milky Way\nprotoclusters are naturally explained by rotatio n (and helicity)\,\nwhich is established on large scales of galaxy disks a nd then\npercolates down to protocluster and possibly even to the tiny sca les\nof protostars.\n \;\n \; https://astronomia.uc.cl/2jucext1/in stitutoastrofisica/en/instituto-2/colloquium/event/465-cluster-formation-a nd-gas-kinematics-in-high-mass-clouds-amelia-stutz DTSTART:20210427T193000Z DTEND:20210427T203000Z LOCATION:Santiago Chile () SUMMARY: Cluster formation and gas kinematics in high mass clouds -Amelia Stutz URL:https://astronomia.uc.cl/2jucext1/institutoastrofisica/en/instituto-2/c olloquium/event/465-cluster-formation-and-gas-kinematics-in-high-mass-clou ds-amelia-stutz END:VEVENT END:VCALENDAR