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Formation of HI Clouds in Shock-compressed Interstellar Medium: Physical Origin of Angular Correlation Between Filamentary Structure and Magnetic Field
Tsuyoshi Inoue, Shu-ichiro Inutsuka
Recent observations of neutral Galactic interstellar medium showed that filamentary structures of HI clouds are aligned with the interstellar magnetic field. Many interesting appli…
Faint warm debris disks around nearby bright stars explored by AKARI and IRSF
Daisuke Ishihara, Nami Takeuchi, Hiroshi Kobayashi +5
Context: Debris disks are important observational clues for understanding planetary-system formation process. In particular, faint warm debris disks may be related to late planet f…
An Origin of Multiple Ring Structure and Hidden Planets in HL Tau: A Unified Picture by Secular Gravitational Instability
Sanemichi Z. Takahashi, Shu-ichiro Inutsuka
Recent ALMA observation has revealed multiple ring structures formed in a protoplanetary disk around HL Tau. Prior to the ALMA observation of HL Tau, theoretical analysis of secula…
The Origin of the Rotation Profiles in Star Forming Clouds
Sanemichi Z. Takahashi, Kengo Tomida, Masahiro N. Machida +1
Angular momentum distribution and its redistribution are of crucial importance in formation and evolution of circumstellar disks. Many molecular line observations toward young stel…
Revealing a detailed mass distribution of a high-density core MC27/L1521F in Taurus with ALMA
Kazuki Tokuda, Toshikazu Onishi, Tomoaki Matsumoto +8
We present the results of ALMA observations of dust continuum emission and molecular rotational lines toward a dense core MC27 (aka L1521F) in Taurus, which is considered to be at…
A revised condition for self-gravitational fragmentation of protoplanetary disks
Sanemichi Z. Takahashi, Yusuke Tsukamoto, Shu-ichiro Inutsuka
Fragmentation of protoplanetary disks due to gravitational instabilities is a candidate of a formation mechanism of binary stars, brown dwarfs, and gaseous giant planets. The condi…