Workshop "Birth and death of high-mass stars: Lesson on newly explored phases of the interstellar medium"

Last update: Feb. 10, 2014

NGC3603, SFO82
credit: NASA/JPL-Caltech/UCLA, NASA/STScI/MPIA/Univ. of Heidelberg/Univ. of Illinois at Urbana-Champaign, AAO/Nagoya Univ.

January 8–11, 2014
Nagoya University


The workshop is organized by Nagoya University under the support for Grants-in-Aids for Scientific Research of JSPS.

Scientific rationale

High-mass stars are influential in galactic evolution by injecting ultraviolet photons, and kinetic energy via stellar winds and supernova shocks. It is therefore important to understand how high-mass stars form and end their lives. Not only studying stars but also probing star-forming interstellar medium affected by high-mass stars gives crucial knowledge on the physical role of high-mass stars. UV radiation creates PDRs, heating up gas and dust grains, and SNRs accelerate cosmic rays which irradiate interstellar gas to produce gamma rays. This workshop aims at exchanging ideas on such interplays of high-mass stars from observational and theoretical view points. Herschel, Planck, Suzaku, Fermi and AGILE are collecting data covering mm/sub-mm/infrared emissions and X/gamma rays. NANTEN2 and Osaka P. U. 1.85m telescope are surveying the molecular phase extensively. MHD numerical simulations of the ISM are also progressing remarkably with new generation super computers. Our particular emphasis in the workshop will be put on ISM filaments, triggered star formation, PDRs, dense HI, dust radiation properties, gamma ray emissions from SNRs and cosmic rays.


Conference room (SS102), 1st floor of Science South Building in Higashiyiama Campus, Nagoya University.


Day 0: Wednesday January 8, 2014
18:00 – Reception
Day 1: Thursday January 9, 2014
  1. Interstellar medium at multi wavelengths (Chair: K. Tachihara)
09:30 – 10:15 "The Interstellar dust as seen with Planck", Jean-Phillipe Bernard
10:15 – 11:00 "Fraction of cold HI gas in the dark gas", Kazuhito Dobashi
11:00 – 11:45 "A new tool to measure dense HI gas based on the Planck dust properties: Evidence for massive HI envelopes surrounding CO clouds", Yasuo Fukui
  Lunch Break
  2. Triggering of high-mass star formation I: Triggering by radiation (Chair: T. Onishi)
14:00 – 14:45 "Radiation driven implosion and triggered star formation", Thomas Bisbas
14:45 – 15:15 "Molecular gas towards the bright-rimmed cloud SFO82 illuminated by NGC6231", Sho Soga
15:15 – 16:00 "UV radiative feedback in the high-mass star formation", Takashi Hosokawa
  Tea Break
  3. Triggering of high-mass star formation II: Triggering by cloud-cloud collisions (Chair: T. Hosokawa)
16:15 – 17:00 "Do cloud-cloud collisions trigger high-mass star formation?", Ken Takahira
17:00 – 17:45 "Young massive cluster formation triggered by GMC-GMC collision", Norikazu Mizuno
17:45 – 18:15 "Triggering of high-mass star formation via cloud-cloud collision; Cases of M20 and RCW120", Kazufumi Torii
Informal dinner
Day 2: Friday January 10, 2014
  4. High-mass stars in high energy regime (Chair: S. Inutsuka)
09:30 – 10:15 "Study of galactic CRs and ISM through gamma-ray observation by Fermi-LAT", Tsunefumi Mizuno
10:15 – 11:00 "From GeV to TeV gamma-rays: a SNR overview", Fabio Acero
Tea Break
11:15 – 11:45 "TeV gamma-ray emission towards high mass star forming regions", Phoebe C. de Wilt
11:45 – 12:15 "Interstellar gas and high energy radiation toward the gamma-ray SNRs", Hidetoshi Sano
  Lunch Break
  5. Formation of molecular clouds and massive stars I: Theory and simulations (Chair: J.P. Bernard)
14:30 – 15:15 "The formation of massive stars through filaments", Shu-ichiro Inutsuka
15:15 – 15:45 "Star formation in massive filamentary molecular clouds", Kazunari Iwasaki
Tea Break
16:00 – 16:45 "MHD simulations of shock-cloud interaction", Tsuyoshi Inoue
16:45 – 17:15 "Magnetohydrodynamic simulations of the formation of molecular clouds by interactions of a jet with interstellar medium", Yuta Asahina
17:15 – Discussion
Day 3: Saturday January 11, 2014
  6. Formation of molecular clouds and massive stars II: Observations (Chair: Y. Fukui)
09:30 – 10:15 "Formation of molecular clouds and the origin of the interstellar turbulence", Kengo Tachihara
10:15 – 11:00 "Millimeter-submillimeter molecular line observations of Giant
Molecular Clouds in the Galaxy and the Magellanic System"
, Toshikazu Onishi
  7. Conclusions
11:00 – 12:00 Discussion


Scientific organizing committee