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Astronomy Colloquium (2016 Fall Semester)

* Date
Nov. 17
* Speaker
Dimitris Stamatellos (University of Central Lancashire)
* Title
Young protostellar discs and their role in planet formation and evolution
* Abstract

 

Stars are born with protostellar discs that during the initial stages of their formation are relatively massive, asymmetric and they are being fed with material infalling from their parent clouds. Recent ALMA observations of discs around young stars revealed the presence of gaps and spiral arms indicative of planet formation. These observations raise the exciting possibility that planets may form much faster than it has been previously thought. Therefore, their formation may be sensitive to the early properties of discs while they are still forming in collapsing molecular clouds. I will present radiative hydrodynamic simulations of self-gravitating discs forming in collapsing clouds and discuss their observational signatures. I will also discuss how giant planets that form in early phase discs evolve.

Can such planets avoid fast inward migration and fast mass growth to survive until after the disc has dispersed?

DateSpeakerTitleRemarks
Sep. 1Dong-Hoon KimPrimordial Gravitational Waves and Rescattered Electromagnetic Radiation in the Cosmic Microwave Background 
Sep. 6Dr. Pierre Cox (ALMA Director, Joint ALMA Observatory, Chile)Atacama Large Millimeter/sub-millimeter Array (ALMA): Status and Development 
Sep. 8Prof. Jimmy Irwin (University of Alabama)Giant X-ray Flares in Nearby Galaxies 
Sep. 15 Chuseok 
Sep. 22 East-Asian AGN Meeting (at SNU) 
Sep. 29 East-Asian Meeting on Astronomy (at SNU) 
Oct. 6Hyung Do Kim
(SNU, Physics Department)
Cosmology and particle physics 
Oct. 13 KAS Fall Meeting 
Oct. 20Chang-Goo Kim (Princeton University)Roaring TIGRESS: supernovae driven galactic outflows 
Oct. 27Heeyoung Oh (SNU)IGRINS spectroscopy toward outflows from young stellar objects 
Nov. 3Jeffrey Hodgson (KASI)VLBI – What can we do at the highest resolutions? 
Nov. 10Carsten Rott (Sungkyunkwan University)The Birth of High-energy Neutrino Astronomy
 
Nov. 17Dimitris Stamatellos
(University of Central Lancashire)
Young protostellar discs and their role in planet formation and evolution
 
Nov. 24Suk Kim (KASI)Study of galaxies in extensive area of the Virgo cluster 
Dec. 1Quang Nguyen-Luong (KASI)Star formation laws of mini-starurst complexes in the Milky Way and link to extragalactic star formation
 
Dec. 2Kyu-Hyun Chae (Sejong University)Statistical analyses of the dynamics of elliptical galaxies from SDSS: dark matter versus modified Newtonian dynamicsFriday, 14:00
Dec. 8TBDTBD 
Dec. 13Kengo Tomida (Osaka University)Formation and Evolution of Circumstellar Disks 
Dec. 19Jeonghee Rho (SETI Institute and NASA Ames Research Center)Herschel and Millimeter Observations of Supernova RemnantsMonday, 16:00