STAR FORMATION NEWSLETTER#302 6 - 13
泉奈都子 (NAOJ)

Paper list
6. Sulphur monoxide exposes a potential molecular disk wind from the planethosting disk around HD 100546
Alice S. Booth et al.

7. The lithium-rotation connection in the 125 Myr-old Pleiades cluster
J. Bouvier et al.

8. The dense cores and filamentary structure of the molecular cloud in Corona
Australis. Herschel SPIRE and PACS observations from the Herschel Gold Belt
SurveyD. Bresnahan et al.

9. (The) Radio outburst from a massive (proto)star: When accretion turns intoejectionR. Casaroni et al.

10. Binary energy source of the HH 250 outflow and its circumstellar environment
F. Comeron et al.

11. The ionizing source of the bipolar HII region S106: a close massive binary
F. Comeron et al.

12. The embedded ring-like feature and star formation activities in G35.673-00.847
Lokesh K. Dewangan et al.

13. Rings and gaps in the disk around Elias 24 revealed by ALMA
G. Dipierro et al.

6. Sulphur monoxide exposes a potential molecular disk windfrom the planet-hosting disk around HD 100546
Alice S. Booth et al.

Accepted by A&A

Planet-hosting diskにおけるSOの観測
HD 100546
Be star- Herbig
M⦿- 2.4
109 pc- ~Position
angle: 146°, inclination: 44°- 2つの惑星が検出（20MJ at 10au,15MJ at 68 au）•• Observation- ALMA Band7SO- 4transition• Results- SO 7 -6 , 7 -6 を検出
7687

https://arxiv.org/pdf/1712.05992

• Results- 2つの速度構造を持つ（source,Blue-shift）- SOの分布はCOよりcompact- source部分のSOはminor axisに対して非対称であり、北東にピークあり- Blue-shift側のSOの分布はCOと合わない- Kinematics, spatial distributionはKeplerian diskと合わない- Blue-shift は Disk wind 成分を示すだろう
windsource

majorminor

• Results- SOはdisk内部の20-100 auの領域に分布- Diskの北東部分は中心星から温められ、disk windが吹く状況を作り出している?

DustGasNumber density

UV flux

9. Radio outburst from a massive (proto) star: When accretion
turns into ejection
R. Casaroni et al.

Accepted by A&A https://arxiv.org/pdf/1802.04228.pdf

YSOのaccretion, ejection現象の関係:密接に関連している (accretion => jet)と予想=> Radio emissionの増加現象（jet）が IRの増加現象（accretion）の後に見られる?
NIRS 3• S255- Accretion の結果、methanol maserとIRemissionにおける増加が見られた天体• Observation- VLA‣ 6.0, 10.0, 22.2, 45.5 GHz- IRAM/NOEMA‣ 3.6, 87, 150 GHz- ALMA‣ 85.2, 87.2, 97.2, 99.2 GHz• Result

Moscadelli et al. 2017 Fig1

• Results- Radio emissionにおける増加傾向を検出（IR の増加に伴うものとしては初検出）

12.The embedded ring-like feature and star formation activities
in G35.673-00.847
L. K. Dewangan et al.

Accepted by ApJ http://xxx.lanl.gov/pdf/1801.07364v1

HII regionに付随しないstellar cluster/ring-like featureの形成について (磁場の影響)• G35.673-00.847- 距離: 3.7 kpc- HII regionの存在が確認•‣ その近くにsemi-ring-like 構造が見られている
Multi-wavelength data• Results- Embedded face-on ring-like featureを検出(1.4 GHzのradio continuumでは見検出)‣ 大質量星のfeed-backによるものではない‣ Hershel clump, YSOがが内部に検出
Hershel• Results- 磁場はring-like featureの長軸方向に平行- Ring-like featureの中の3つのclumpはmagnetically supercritical (乱流>磁場, 活発に星生成が起こる=>星団形成)=> Li & Nakamuraの理論（subcritical cloudsのfragmentation）で説明可能

7. The lithium-rotation connection in the 125 Myr-old Pleiades
cluster
J. Bouvier et al.

Accepted by A&A

https://arxiv.org/pdf/1712.06525.pdf

8. The dense cores and filamentary structure of the molecular
cloud in Corona Australis. Hershel SPIRE and PACS
observation from the Herschel Gould Belt Survey
D. Bresnahan et al.

Accepted by A&A http://arxiv.org/pdf/1801.07805

10.Binary energy source of the HH 250 outflow and its
circumstellar event
F. Comeron et al.

Accepted by A&A https://arxiv.org/pdf/1801.06939

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11.The ionizing source of the bipolar HII region S106: a close
massive binary
F. Comeron et al.

Accepted by A&A http://arxiv.org/pdf/1801.08958

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13.Rings and gaps in the disc around Elias 24 revealed by ALMA
G. Dipierro et al.

Accepted by MNRAS http://arxiv.org/pdf/1801.05812

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