Academia Sinica Institute of Astronomy & Astrophysics
中央研究院天文及天文物理研究所
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Activity > Lunch Talk

Lunch Talk (2020)

ASIAA Lunch Talk is an institute-wide event allowing ASIAA researchers from different fields to discuss astronomy in a very casual manner. The informal meeting is usually held at lunch time on every Monday. Occasionally visitors are also invited to the lunch talk to share their research and ideas with ASIAA researchers.

NEXT Lunch Talk: 2020-02-05 Wed 12:00~13:00 [R1203]
Speaker:Chang, Hsiao-Wen
Topic:Advanced materials development for superconducting mixers.
No. Time/Place Speaker Topic (Abstract)
download PDF: dowaload talk PDF file
12020-12-23 Wed
12:00~13:00
R1203
Lu, Wei-Chun
[ASIAA]
TBD
22020-12-09 Wed
12:00~13:00
R1203
Ho, Chin-Ting
[ASIAA]
TBD
32020-11-25 Wed
12:00~13:00
R1203
Chen, Chung-Cheng
[ASIAA]
TBD
42020-11-11 Wed
12:00~13:00
R1203
Yan, Chi-Hung
[ASIAA]
TBD
52020-10-28 Wed
12:00~13:00
R1203
Pei, Ting-Hang
[ASIAA]
TBD
62020-10-14 Wed
12:00~13:00
R1203
Ling, Hung-Hsu
[ASIAA]
TBD
72020-09-30 Wed
12:00~13:00
R1203
Jian, Shou-Ting
[ASIAA]
TBD
82020-09-16 Wed
12:15~13:15
R1203
Wei, Ta-Shun
[ASIAA]
TBD
92020-09-02 Wed
12:00~13:00
R1203
Chang, Shu-Hao
[ASIAA]
TBD
102020-08-19 Wed
12:00~13:00
R1203
Hsu, Shu-Fu
[ASIAA]
TBD
112020-08-05 Wed
12:00~13:00
R1203
Wang, Chun-Lun
[ASIAA]
TBD
122020-07-22 Wed
12:00~13:00
R1203
Chiang, Tzu-Yan
[ASIAA]
TBD
132020-07-08 Wed
12:00~13:00
R1203
Wu, Yi-Ching
[ASIAA]
TBD
142020-06-24 Wed
12:00~13:00
R1203
Chiu, Chuang Ping
[ASIAA]
TBD
152020-06-10 Wed
12:00~13:00
R1203
Cheng, Jen-Chieh
[ASIAA]
TBD
162020-05-27 Wed
12:00~13:00
R1203
Chen, Hsin-Yo
[ASIAA]
TBD
172020-05-13 Wed
12:00~13:00
R1203
Chang, Yen-Pin
[ASIAA]
TBD
182020-04-29 Wed
12:00~13:00
R1203
Yen, Sheng-Feng
[ASIAA]
TBD
192020-04-15 Wed
12:00~13:00
R1203
Chien, Chen
[ASIAA]
TBD
202020-04-01 Wed
12:00~13:00
R1203
Fu, Kuo-Chieh
[ASIAA]
TBD
212020-03-18 Wed
12:00~13:00
R1203
Wang, Chao-Ching
[ASIAA]
TBD
222020-03-04 Wed
12:00~13:00
R1203
Chang, Yin-Chang
[ASIAA]
SUBARU PFI test light source system.
232020-02-24 Mon
12:15~13:15
R1203
Teppei Okumura
[ASIAA]
242020-02-10 Mon
12:15~13:15
R1203
Chin-Shin Chang
[ALMA]
252020-02-05 Wed
12:00~13:00
R1203
Chang, Hsiao-Wen
[ASIAA]
Advanced materials development for superconducting mixers.
262020-01-13 Mon
12:15~13:15
R1203
Cheng-Han Hsieh
[Yale]
Rotating N2D+ filament in Orion B: Do cores inherit their angular momentum from their parent filament?
Abstract

Angular momentum is one of the most important physical quantities that govern star formation. The initial angular momentum of cores may be responsible for its fragmentation and can have an influence on the size of the protoplanetary disk. To understand how cores obtain their initial angular momentum, it is important to study the angular momentum of filaments where cores form. While a number of theoretical studies on filament rotation exist, there exist little or no precise specific angular momentum measurements in star-forming filaments. In this talk, I will present high-resolution N2D+ ALMA observations of the LBS23 (HH24-HH26) region in Orion B. Our maps provide one of the most precise and reliable measurements of the specific angular momentum in a star-forming filament. We find values of about 2 to 9 x 10^20 cm^2/s, comparable to the value measured in rotating cores with a size similar to our filament width (~ 0.04 pc) in Orion A. Our results suggest that young cores may inherit their angular momentum from their parent filaments. In addition, if time permits I will share some work and planned observations for the first interstellar comet, Borisov.

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