Star Formation Newsletter No. 359 #55-72
55 The link between infall location, early disc size, and the fraction of self-gravitationally fragmenting discs,Schib et al.
57 Effective dust growth in laminar circumplanetary discs with magnetic wind-driven accretion, Shibaike & Mori
59 ALMA Fragmented Source Catalogue in Orion (FraSCO) I. Out ow interaction within an embedded cluster inOMC-2/FIR3, FIR4, and FIR5, Sato et al.
62 Hazy with a chance of star spots: constraining the atmosphere of the young planet, K2-33b. Thao et al.
63 CARMA-NRO Orion Survey: unbiased survey of dense cores and core mass functions in Orion A,Takemura et al.
64 Ionisation of inner T Tauri star discs: effects of in-situ energetic particles produced by strong magnetic
reconnection events, Brunn et al.
66 Application of Convolutional Neural Networks to Predict Magnetic Fields Directions in Turbulent Clouds
Xu et al.
69. Increasing mass-to- ux ratio from the dense core to the protostellar envelope around the Class 0 protostar HH
211, Yen et al.
70. OH mid-infrared emission as a diagnostic of H2O UV photodissociation. II. Application to interstellar PDRs,Zannese et al.,
71. Radial Velocity Survey for Planets around Young stars (RVSPY) A transiting warm super-Jovian planet aroundHD 114082, a young star with a debris disk, Zakhozhay, et al.の紹介は省略します。

flfl

花輪 知幸 (千葉大)

68 CORINOS. I. JWST/MIRI Spectroscopy and Imaging of a Class 0 Protostar
IRAS 15398–3359, Y.-L. Yang et al. ApJL, 941, L13 (2022)
COMs ORigin Investigated by the Next-generation Observatory in Space (CORINOS)
他に B335, L483, Ser-emb7 を観測
IRAS 15398-3359 very low mass protostar 1.5 Lo, Tbol = 68±27 K, Lupus
Carbon chain molecules (CCMs)が豊富, 気相の COM からの放射がほとんどない,
Episodic accretion の徴候, コンパクトな円盤, 小さい角運動量のガス降着 (rcent 〜 40 au)

連続光+H2 : 4 つのシェル 力学年齢 〜 170 年,アウトフロー起源の放射50-80年間隔での放出No. 72 WISE Green Objects (WGOs): The Massive Star Candidates in the Whole Galactic
Plane (|b|<2°), Zhang et al. ApJS, 264, 24 (2023)
Green: 4.6 μm (H2, S,
CO の輝線) で明るい広がった成分はMYSOに付随したOut ow

Group 1

3人で複数回チェック協議により分類SIMBADを使って進化した星などを除く<latexit sha1_base64="O0PwQQltKJAnqR42oLAPamqWsbI=">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</latexit>

W2(4.6µm)> 1.7
W1(3.4µm)

Group 2

Group 3fl1260 WGOs が Hi-Gal (70 μm, 500 μm) に対応天体

Spitzer で見つけた EGOの半分がWGOでない
Group 1Group 2Group 3(W3, W4の放射が付随していないから)SEDから M, dM/dt を求める

56. A Low-mass Pre-main-sequence Eclipsing Binary in Lower Centaurus Crux Discovered with TESS,Stassun et al. ApJ, 941, 125 (2022)
磁場による影響まで見積もれる前主系列食連星を発見!
2M1222–57

周期 3.071 日 年齢 16.2 ± 2.2 Myr

距離 105.79 ± 0.28 pc
視線方向速度 CTIO 0.9 m で17回観測
Li I λ6708, Hα λ6563 も測定

測光時間 2分, 30分

Speckle imaging Gemini 8m Zorro
で 0.”89 離れたところに3.3±0.3等暗い
第3体を発見回転周期の変動と2.1日周期の変動
さらに0.3日間のdip が非周期的に発生

星表面が磁場により膨らんでいると仮定したモデルの方がよく合う

Li・主星 ・伴星

Hd = cd/Ω61. Planetesimal formation by the gravitational instability of dust ring structures,Takahashi et al. ApJ, in press (2023)
原始惑星系円盤に Secular GI でできたリングを考え、それが分裂して微惑星ができる可能性を論じる。

α=3×10-4,
ε=0.1, Q=3<latexit sha1_base64="HVq7wCHldmzxohEeVC8I3xV+NdQ=">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</latexit>

T (r) = 150(r/1 au)

今回の
解析

1/2

分散関係(局所cded == 0.005, 0.003, 0.001r⌦<latexit sha1_base64="oU9oo0q6+0aEDv9njlqbsIDDGiM=">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</latexit><latexit sha1_base64="K5BwAvqAIBYLfJjm3wLZrkzZ6P8=">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</latexit>

W̃ =W⌦=1cd

空白域は安定

α=3×10-4,ε=0.1, Q=3<latexit sha1_base64="K5BwAvqAIBYLfJjm3wLZrkzZ6P8=">AAACj3ichVG7bhNBFD1ZXsEB4pAGiWYUKyiisO5G4ABSkAUNqcjLcaRsZO2Ox2aUfWl3bCms/ANUdBRUiYQQSk9LpDT5AYp8AkoZJJoUXK83QhSBu9qZM+fec+fMjBf7OjVEJ2PWlavXrt8Yv1mauHX7zmR56u5GGvUSqRoy8qNk03NT5etQNYw2vtqME+UGnq+a3s7LYb7ZV0mqo3Dd7MZqO3C7oe5o6RqmWuWHjtF+W2XNgVgUTidxZdYUzutAdd1BJkUrc5JAtAectVvlClUpDzEC9jyDx2Q/rdWEXaQqKGI5Kn+GgzYiSPQQQCGEYezDRcrfFmwQYua2kTGXMNJ5XmGAEmt7XKW4wmV2h8cur7YKNuT1sGeaqyXv4vOfsFJglr7TFzqjYzqgH3R+aa8s7zH0ssuzN9KquDX57t7ar/+qAp4N3vxR/dOzQQdPcq+avcc5MzyFHOn7bz+crT1bnc0e0D6dsv89OqEjPkHY/yk/rajVjyjxA1zcsrgcbMxX7VrVXnlUqb8onmIc9zGDOb7vBdTxCsto8L7v8RXfcGhNWQvWc6s+KrXGCs00/gpr6TfvU5l1</latexit>

W̃ =<latexit sha1_base64="HVq7wCHldmzxohEeVC8I3xV+NdQ=">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</latexit>T (r) = 150(r/1 au) 1/2<latexit sha1_base64="oU9oo0q6+0aEDv9njlqbsIDDGiM=">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</latexit>

ed =W⌦=1cd

cd= 0.005, 0.003, 0.001
r⌦66. A Census of Out ow to Magnetic Field Orientations in Nearby Molecular Clouds,
Xu et al. ApJ, 941, 81(2022)
Ophiuchus, Taurus, Perseus, Orion 領域の CO map (FCRAO, Nobeyama) から bipolar out owを200対 検出
Planck 353 GHz の偏光 から 局所的 (Out owからの放射に比例させて重みづけ)な磁場の向きを測定
Out owの磁場に対する傾き

完全に無相関である可能性は排除される。
視線方向

天球面内

Out owの視線に対する傾き(シミュレーfl

fl

fl

fl

fl

ションデータで訓練されたAIが測定）

No. 60

No. 58