Expected observations of star formation process: From molecular cloud core to first hydrostatic core

Kohji Tomisaka, Akimasa Kataoka, Masahiro Machida, Kengo Tomida, Kazuya Saigo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We performed MHD simulations of the contraction of rotating, magnetized molecular cloud cores. In the molecular cores, B-field and angular momentum (J) vector are not always aligned. When a first hydrostatic core forms, axisymmetric structure appears and average B and J are parallel in small scale. However, in large scale, the configuration is far from this. This means that contraction process is imprinted on the snapshot. We calculated two mock observations of MHD simulations (1) the polarization of dust thermal emission to reveal the magnetic evolution and (2) the line emissions from interstellar molecules to reveal the evolution of density and velocity. Comparing the mock observations with true ones, we can answer several questions: in which case the hourglass-shaped and S-shaped magnetic fields are seen; how the distribution of polarized intensity is understood; how the first hydrostatic core should be observationally identified.

Original languageEnglish
Title of host publicationThe Labyrinth of Star Formation - Conference Dedicated to Prof. Anthony Whitworth
EditorsSimon Goodwin, Dimitris Stamatellos, Derek Ward-Thompson
PublisherKluwer Academic Publishers
Pages133-137
Number of pages5
ISBN (Print)9783319030401
DOIs
Publication statusPublished - Jan 1 2014
EventConference on Labyrinth of Star Formation dedicated to Prof. Anthony Whitworth, 2012 - Crete, Greece
Duration: Jun 1 2012 → …

Publication series

NameAstrophysics and Space Science Proceedings
Volume36
ISSN (Print)1570-6591
ISSN (Electronic)1570-6605

Other

OtherConference on Labyrinth of Star Formation dedicated to Prof. Anthony Whitworth, 2012
CountryGreece
CityCrete
Period6/1/12 → …

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Computer Science Applications
  • Spectroscopy
  • Space and Planetary Science
  • Nuclear and High Energy Physics

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    Tomisaka, K., Kataoka, A., Machida, M., Tomida, K., & Saigo, K. (2014). Expected observations of star formation process: From molecular cloud core to first hydrostatic core. In S. Goodwin, D. Stamatellos, & D. Ward-Thompson (Eds.), The Labyrinth of Star Formation - Conference Dedicated to Prof. Anthony Whitworth (pp. 133-137). (Astrophysics and Space Science Proceedings; Vol. 36). Kluwer Academic Publishers. https://doi.org/10.1007/978-3-319-03041-8_24