カテゴリー: その他

August　15　 Tue　　15:00-16:00 　　Tea Talk　　　　 Zoom / 中央棟北ロビー (hybrid) 　

詳細は下記からご覧ください。

=============== August　15　Tue===============

キャンパス：三鷹　野辺山 水沢 岡山 ハワイ
セミナー名：Tea Talk
定例・臨時の別：臨時
日時：8/15（火）15：00～16：00
場所：Zoom　/ 中央棟北ロビー (hybrid)

講演者：Vanessa Moss
Title：Lessons learned from the future of meetings for a better today Looking to the future
Abstract：
Lessons learned from the future of meetings for a better today Looking to the future can tell us a lot about the limitations of today. “The Future of Meetings” (TFOM) began as a symposium dedicated to exploring the future of interaction in 2020, framed around key themes of accessibility, inclusivity, sustainability and technology and with its roots in the astronomy community. Throughout our work in TFOM, it has been clear that the standard meeting practices taken for granted as a given in astronomy (and science) have long been inaccessible to many, creating a “normal” that is both exclusive and unsustainable. Conversely, the rapid advances in effective online means of communicating and collaborating open up a wealth of new possibilities for redefining what is required to succeed in astronomy, from the ground up. In this talk, I will outline the lessons learned from and core recommendations of TFOM, based on our ongoing work as an active community of practice. In the wake of pandemic disruption, we have a unique chance to rewrite the fabric of collaboration within our field and beyond, in order to design a better normal for today, tomorrow and the future. By doing so, we can set a leading example for science, academia and society as a whole, maximising inclusivity while minimising environmental harm at a critical turning point for our long term survival as a species.

Bio：
Dr Vanessa Moss is a radio astronomer based at CSIRO Space & Astronomy in Australia. In her position at CSIRO, she is Head of Science Operations for the groundbreaking ASKAP telescope in remote Western Australia, managing astronomical observations from specification to the arrival of the data at the Pawsey Supercomputing Centre. In her research, she has studied cosmic phenomena across the universe, from the hidden structure of the Milky Way halo to dense gas casting shadows against distant black holes, and is a core member of FLASH (First Large Absorption Survey in HI).

世話人の連絡先：
-名前： Blumenthal Kelly

August　8　Tue　 10:00-11:00 　　　SOKENDAI Doctoral Thesis Preliminary　 Evaluation　　　　　　　　 Zoom / Lecture Room (hybrid)

August　9　Wed　　　15:30-16:30 　NAOJ Science Colloquium 　　

Zoom / Large Seminar Room (hybrid)　　 　　　　　　　　　　　　　　　　

詳細は下記からご覧ください。

=============== August　8　Tue===============

Campus：Mitaka
Seminar：SOKENDAI Doctoral Thesis Preliminary Evaluation 総研大博士学位論文予備審査会
Regularly Scheduled/Sporadic：Sporadic
Date and time：August 8, 2023, 10:00～11:00
Place：Lecture Room and Zoom

Speaker：Nao Fukagawa
Title：Chemical Evolution of Dwarf Galaxies

Facilitator
-Name：Hideyuki Kobayashi

:Natsuko Fujii (Graduate Student Affairs Unit)

=============== August　9　Wed===============

Campus：Mitaka
Seminar：NAOJ Science Colloquium
Regularly Scheduled/Sporadic：Every Wednesday
Date and time：2023 Aug. 9, 15:30-16:30
Place：Zoom / the large seminar room (hybrid)

Speaker：Lars Bonne
Affiliation：SOFIA Science Center, USRA, NASA Ames
Title：The assembly and dispersal of dense gas in star forming regions
Abstract：
First, I will present work analyzing multiple spectral lines toward
low- and high-mass star forming regions. The study employs archival HI
data, CO observations from the NANTEN2, APEX, and IRAM 30m
observatories, and [CII] observations with the SOFIA telescope. In these
regions we demonstrated the presence of recurring organized velocity
fields, also found by other authors, which suggests that star formation
is initiated by the same mechanism. Namely, magnetic field bending in
high-velocity (>7 km/s) colliding flows. This appears to be consistent
with magnetic field observations in several nearby clouds, which
suggests that the proposed scenario might be widespread and explain both
low- and high-mass star formation.
In the second part, I will present observations of the [CII] spectral
line by the FEEDBACK legacy program toward ~10 ionized (HII) regions
surrounding massive O stars. [CII] is the main coolant of the neutral
ISM in photodissociation regions (PDRs) and thus an excellent probe to
study the effect of stellar feedback on the host molecular cloud. The
[CII] emission reveals previously undetected high-velocity gas (10-20
km/s) in all regions. This high-velocity gas is the result of expanding
bubbles and continuous mass ejection in flattened molecular clouds. The
detection of this high-velocity gas has reignited the discussion whether
radiation or stellar winds drive molecular dispersal. Quantifying the
mass ejection rates also allows us to make a direct estimate of
molecular cloud dispersal timescales which consistently points to a few
(< 5) Myr. This provides direct observational evidence that molecular
cloud are transient structures and not in quasi-static equilibrium.

Facilitator
-Name：Doris Arzoumanian
-Comment：English