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ALMA Observations of a High-density Core, MC27/L1521F in Taurus: Dynamical Gas Interaction at the Possible Site of a Multiple Star Formation
Kazuki Tokuda
We present the results of ALMA observations of dust continuum emission and molecular rotational lines toward a dense core, MC27 (aka L1521F), which is considered to be very close t…
Non-linear Development of Secular Gravitational Instability in Protoplanetary Disks
Ryosuke T. Tominaga, Shu-ichiro Inutsuka, Sanemichi Z. Takahashi
We perform non-linear simulation of secular gravitational instability (GI) in protoplanetary disks that has been proposed as a mechanism of the planetesimal formation and the multi…
Electron Heating and Saturation of Self-regulating Magnetorotational Instability in Protoplanetary Disks
Shoji Mori, Takayuki Muranushi, Satoshi Okuzumi +1
Magnetorotational instability (MRI) has a potential to generate the vigorous turbulence in protoplanetary disks, although its turbulence strength and accretion stress remains debat…
How do stars gain their mass? A JCMT/SCUBA-2 Transient Survey of Protostars in Nearby Star Forming Regions
Gregory J. Herczeg, Doug Johnstone, Steve Mairs +55
Most protostars have luminosities that are fainter than expected from steady accretion over the protostellar lifetime. The solution to this problem may lie in episodic mass accreti…
A Detached Protostellar Disk around a 0.2 protostar in a Possible Site of a Multiple Star Formation in a Dynamical Environment in Taurus
Kazuki Tokuda, Toshikazu Onishi, Kazuya Saigo +9
We report ALMA observations in 0.87 mm continuum and CO ( = 3--2) toward a very low-luminosity (0.1 ) protostar, which is deeply embedded in one of the dens…
The Formation of Massive Molecular Filaments and Massive Stars Triggered by a MHD Shock Wave
Tsuyoshi Inoue, Patrick Hennebelle, Yasuo Fukui +3
Recent observations suggest that intensive molecular cloud collision can trigger massive star/cluster formation. The most important physical process caused by the collision is a sh…