The Kinematics of the Methanol Maser at 6.7 GHz in Cepheus A

被引：0
|
作者：
Sugiyama, Koichiro [1 ]
Fujisawa, K. [1 ]
Wajima, K. [1 ]
Sawada-Satoh, S. [1 ]
Isono, Y. [1 ]
Honma, M. [2 ]
Murata, Y. [3 ]
Mochizuki, N. [3 ]
Doi, A. [3 ]
机构：
[1] Yamaguchi Univ, 1677-1 Yoshida, Yamaguchi 7538512, Japan
[2] Natl Astronom Observ Japan, Mitaka, Tokyo 1818588, Japan
[3] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Kanagawa 2298510, Japan
来源：
APPROACHING MICRO-ARCSECOND RESOLUTION WITH VSOP-2: ASTROPHYSICS AND TECHNOLOGY | 2009年 / 402卷
关键词：
JET; HW2;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have conducted VLBI observations of methanol masers at 6.7 GHz with JVN and water maser at 22.2 GHz with VERA in the massive star-forming region Cepheus A (Cep A). The distribution of methanol maser spots showed an arc-like structure. Comparing the distributions of CH3CN line emission and continuum emission at 8, 22, and 43 GHz obtained from other observations, we inferred that the 6.7-GHz methanol masers in Cep A originates from a rotating disk with a radius of 690 AU, a PA of 110 degrees, and an inclination of 73 degrees. Also, some of the water masers in this region may be associated with the rotating disk.
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页码：392 / +
页数：2
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