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ALMA-J Workshop

ALMA Workshop on Formation and Evolution of Disks around Protostars

Kazuya Saigo
(Large Proposal)
December 12 to 13, 2015

Date: December 12-13, 2015
Venue: Lecture Room, NAOJ Mitaka Campus, Japan

This is the first announcement on the ALMA Workshop "Formation and Evolution of Disks around Protostars", held at NAOJ Mitaka campus on December 12th and 13th 2015. Recent high angular resolution observations of protostars using mm and submm interferometers, including ALMA, have revealed that some of protostars are associated with Keplerian disks, which would be precursors of protoplanetary disks around T Tauri stars. Nevertheless, their formation and evolution processes, in particular with magnetic fields, are still poorly understood. It is required to observe more disks around protostars to understand the formation and evolution processes as well as their physical properties.

In this workshop, we will summary the current our understanding about disks around protostars based on observations and theories, and then discuss possible ALMA large proposals for cycle 4 to study the formation and evolution of disks around protostars. Through the workshop we aim to construct a strong large scientific team under the global collaboration, inviting top scientists in this field not only from the East-Asian region but also from US and Europe, and to discuss specific planning of the proposals. For the purpose of this workshop, we encourage you to actively participate in our research team and to make specific contributions to our science and team.

Invited Speakers

Credit K. Oberg, CfA; ALMA (NRAO/ESO/NAOJ); B. Saxton (NRAO/AUI/NSF)
Jes Jørgensen (University of Copenhagen, Denmark)
Shih-Ping Lai (National Tsing-Hua University, Taiwan)
Zhi-Yun Li (University of Virginia, USA)
Leslie Looney (University of Illinois, USA)
Sebastien Maret (Universite Joseph Fourier, France)
Tomoaki Matsumoto (Hosei University)
John Tobin (Leiden Observatory, Netherland)
Kohji Tomisaka (NAOJ):TBC
Satoshi Yamamoto (University of Tokyo): TBC
Hsi-Wei Yen (ASIAA, Taiwan)


Kazuya Saigo (Osaka Pref. University)
Shigehisa Takakuwa (ASIAA, Taiwan)
Nagayoshi Ohashi (NAOJ, Japan)


Invited Talk (I): 30 minutes; Contributed Talk (C): 15 minutes

2015 Dec. 12 (Sat)

 9:00 Registration
 9:45 Introduction and Goal of this Workshop: Nagayoshi Ohashi

Session I (Disk Formation around Protostars)
10:00 (I) Disks and Multiplicity in Protostars: The Need for Large Unbiased Surveys: John Tobin
10:30 (I) ALMA Observations of Dynamical Evolution of Disks around Protostars: Nagayoshi Ohashi

11:00-11:15 Break

11:15 (I) Subarcsecond-Resolution Survey for Disks around Protostars with IRAM-PdBI: Sebastien Maret
11:45 (I) Resolving protoplanetary disks at millimeter wavelengths with CARMA: Woojin Kwon

12:15-13:30 Lunch (Lunch Box Provided)

13:30 (I) SMA and ALMA Studies of Formation of Protoplanetary Disks: Hsi-Wei Yen
14:00 (I) Continuum Survey for Protostellar Envelopes and Disks: Leslie Looney
14:30 (I) Theoretical Study of Protostellar-Disk Formation: Zhi-Yun Li
15:00 (I) Study of the very Early Stage of Protostellar Formation with Polarimetry: Kohji Tomisaka

15:30-16:00 Break

16:00 (I) Early Formation of Circumstellar Disks: Kengo Tomida
16:30 (C) Bimodality of Circumstellar Disk Evolution Induced by the Hall Effect: Yusuke Tsukamoto: Riken

Session II (Chemistry of Protostellar Envelopes and Disks)
16:45 (I) Tracing the chemical evolution of deeply embedded protostars: Jes Jorgensen
17:15 (I) Chemical Diversity of Protostellar Cores: Satoshi Yamamoto
17:45 Discussion

19:00 Banquet (Musashisakai; Hiwaochite Sake Tanoshi)

2015 Dec. 13 (Sun)

Session III (Disks and Planets)
 9:30 (I) Survey for Disks around the Youngest Protostellar Sources: Shih-Ping Lai
10:00 (I) The Width and Depth of the Gap Induced by a Planet in a Protoplanetary Disk: Takayuki Muto

10:30-11:00 Break

Session IV (Protostellar Binaries)
11:00 (I) ALMA Observations of Protostellar Binaries: Shigehisa Takakuwa
11:30 (I) Theoretical Models and Observing Simulations of Protostellar Binary Systems: Tomoaki Matsumoto

12:00-13:30 Lunch (Lunch Box Provided)

Session V (Discussion)
13:30-15:30 Discussion I: Overall
-Strategy, Scientific Items, and Goals in Protostellar and Protoplanetary Disk Studies
-Briefing and Planning of the ALMA Cycle 4 Proposals

15:30-16:00 Break

16:00-18:00 Discussion II: Specific Planning of the Large Proposals
-Observational Settings, Target Selection
-Planning of our Telecons using Skype, Individual Roles

18:00: Final Remark: Nagayoshi Ohashi

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