Zobrazeno 1 - 10
of 3 941
pro vyhledávání: '"N. Machida"'
Autor:
Masahiro N. Machida, Shantanu Basu
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 1, p 41 (2024)
We perform a long-term simulation of star and disk formation using three-dimensional nonideal magnetohydrodynamics. The simulation starts from a prestellar cloud and proceeds through the long-term evolution of the circumstellar disk until ∼1.5 × 1
Externí odkaz:
https://doaj.org/article/d2b2fb1f8eca41689d3af00a389cf06b
Autor:
Kengo Tachihara, Naofumi Fukaya, Kazuki Tokuda, Yasumasa Yamasaki, Takeru Nishioka, Daisei Abe, Tsuyoshi Inoue, Naoto Harada, Ayumu Shoshi, Shingo Nozaki, Asako Sato, Mitsuki Omura, Kakeru Fujishiro, Misato Fukagawa, Masahiro N. Machida, Takahiro Kanai, Yumiko Oasa, Toshikazu Onishi, Kazuya Saigo, Yasuo Fukui
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 131 (2024)
We report Atacama Large Millimeter/submillimeter Array/Atacama Compact Array observations of a high-density region of the Corona Australis cloud forming a young star cluster, and the results of resolving internal structures. In addition to embedded C
Externí odkaz:
https://doaj.org/article/9f4edafbeefd4dcb934f64617f8a7ed1
Autor:
Natsuho Maeda, Keiji Ohtsuki, Ryo Suetsugu, Yuhito Shibaike, Takayuki Tanigawa, Masahiro N. Machida
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 62 (2024)
The principal regular satellites of gas giants are thought to be formed by the accumulation of solid materials in circumplanetary disks (CPDs). While there has been significant progress in the study of satellite formation in CPDs, details of the supp
Externí odkaz:
https://doaj.org/article/64c858a1fcdb44478cd9a0cb604003ad
Autor:
Jinshi Sai, Hsi-Wei Yen, Masahiro N. Machida, Nagayoshi Ohashi, Yusuke Aso, Anaëlle J. Maury, Sébastien Maret
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 2, p 192 (2024)
We present the results of our mosaic observations of a single Class 0 protostar IRAS 15398−3359 with the Atacama Compact Array in the CO J = 2–1 line. The new observations covering a $\sim 2^{\prime} $ square region reveal elongated redshifted an
Externí odkaz:
https://doaj.org/article/cc599a08334b442ab85dea415090f359
Autor:
Kazuki Tokuda, Naoto Harada, Mitsuki Omura, Tomoaki Matsumoto, Toshikazu Onishi, Kazuya Saigo, Ayumu Shoshi, Shingo Nozaki, Kengo Tachihara, Naofumi Fukaya, Yasuo Fukui, Shu-ichiro Inutsuka, Masahiro N. Machida
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 2, p 99 (2024)
Recent Atacama Large Millimeter/submillimeter Array (ALMA) observations have revealed an increasing number of compact protostellar disks with radii of less than a few tens of astronomical units and that young Class 0/I objects have an intrinsic size
Externí odkaz:
https://doaj.org/article/a8bfe1711943427d9b8a38210618eb0a
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 2, p 116 (2024)
Outflows play a pivotal role in star formation as one of its most visible markers and a means of transporting mass, momentum, and angular momentum from the infalling gas into the surrounding molecular cloud. Their wide reach (at least thousands of as
Externí odkaz:
https://doaj.org/article/8dad5a5149a044a9bb99aa35cbfafbac
Autor:
Satoko Takahashi, Masahiro N. Machida, Mitsuki Omura, Doug Johnstone, Kazuya Saigo, Naoto Harada, Kohji Tomisaka, Paul T. P. Ho, Luis A. Zapata, Steve Mairs, Gregory J. Herczeg, Kotomi Taniguchi, Yuhua Liu, Asako Sato
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 48 (2024)
We present ∼0.″2 (∼80 au) resolution observations of the CO(2–1) and SiO(5–4) lines made with the Atacama large millimeter/submillimeter array toward an extremely young intermediate-mass protostellar source ( t _dyn < 1000 yr), MMS 1 locate
Externí odkaz:
https://doaj.org/article/76ef27cad96d41cba53bab2ff852f71b
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 1, p 72 (2024)
We present molecular line observations of the protostellar outflow associated with HH270mms1 in the Orion B molecular cloud with ALMA. The ^12 CO ( J = 3−2) emissions show that the outflow velocity structure consists of four distinct components of
Externí odkaz:
https://doaj.org/article/33e29fb05d8b4adfb341815771a677b4
Autor:
Ayumu Shoshi, Naoto Harada, Kazuki Tokuda, Yoshihiro Kawasaki, Hayao Yamasaki, Asako Sato, Mitsuki Omura, Masayuki Yamaguchi, Kengo Tachihara, Masahiro N. Machida
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 2, p 228 (2024)
WL 17 is a Class I object and was considered to have a ring–hole structure. We analyzed the structure around WL 17 to investigate the detailed properties of this object. We used Atacama Large Millimeter/submillimeter Array archival data, which have
Externí odkaz:
https://doaj.org/article/4bde16e127c7442880535515076b39c5
Publikováno v:
Veterinární Medicína, Vol 67, Iss 4, Pp 212-217 (2022)
A two-month-old, male intact, mixed-breed cat weighing 0.6 kg was presented with respiratory distress and anorexia. From the transthoracic echocardiographic, reduced fractional shortening (FS) and increased endocardial echogenicity were recognised wi
Externí odkaz:
https://doaj.org/article/1f85b5fc3ec741519da432bd20af405c