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Observations of 6.7 GHz methanol masers with East-Asian VLBI Network. II. Internal proper motion measurement in G006.79-00.25
Sugiyama, Koichiro1,2; Fujisawa, Kenta2,3; Hachisuka, Kazuya2,4; Yonekura, Yoshinori1; Motogi, Kazuhito3,5; Sawada-Satoh, Satoko1,5; Matsumoto, Naoko6; Hirano, Daiki2; Hayashi, Kyonosuke2; Kobayashi, Hideyuki6; Kawaguchi, Noriyuki4,6; Shibata, Katsunori M.6; Honma, Mareki5,6; Hirota, Tomoya6; Murata, Yasuhiro7,8; Doi, Akihiro7,8; Ogawa, Hideo9; Kimura, Kimihiro9; Niinuma, Kotaro2; Chen, Xi4,10; Xia, Bo4,10; Li, Bin4,10; Sorai, Kazuo11; Momose, Munetake12; Saito, Yu12; Takaba, Hiroshi13; Omodaka, Toshihiro14; Kim, Kee-Tae15; Shen, Zhiqiang4,10
2016-10-01
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
ISSN0004-6264
Volume68Issue:5
AbstractWe detected internal proper motions of the methanol maser features at 6.7 GHz in a high-mass star-forming region G006.79-00.25 with the East-Asian VLBI Network. The spatial distribution of the maser features shows an elliptical morphology. The internal proper motions of 17 methanol maser features relative to the barycenter of the features were measured. The amplitude of the internal motions ranged from 1.30 to 10.25 kms(-1). Most of the internal proper motions of the maser features seem to point counter-clockwise along the elliptical morphology of the maser features. We applied the disk model, which includes both rotating and expanding components, to the observed positions, i.o.s. velocities, and proper motions. The derived rotation, expansion, and systemic velocities are +3(-2)(+2), +6(-2)(+2), and +21(-2)(+2) kms(-1), respectively, at the radius of 1260 au on the disk with a position angle of the semi-major axis of -140 degrees. and an inclination of 60 degrees. The derived rotating motion suggests that the methanol maser emissions showing the elliptical spatial morphology possibly trace the rotating disk. The derived expanding motion might be caused by the magnetic-centrifugal wind on the disk, which was estimated on the basis of the typical magnetic field strength at emitting zones of a methanol maser.
KeywordGalaxies: Star Formation Instrumentation: High Angular Resolution Ism: Individual (G006.79-00.25) Masers Proper Motions
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1093/pasj/psv089
WOS KeywordSTAR-FORMING REGIONS ; YOUNG STELLAR OBJECT ; GALACTIC PLANE SURVEY ; HIGH-MASS PROTOSTAR ; (PROTO)STAR IRAS 20126+4104 ; EXTENDED GREEN OBJECTS ; ORION SOURCE I ; WATER MASERS ; TRIGONOMETRIC PARALLAXES ; MAGNETIC-FIELDS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000386203400005
PublisherOXFORD UNIV PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23610
Collection中国科学院紫金山天文台
Corresponding AuthorSugiyama, Koichiro
Affiliation1.Ibaraki Univ, Ctr Astron, 2-1-1 Bunkyo, Mito, Ibaraki 3108512, Japan
2.Yamaguchi Univ, Grad Sch Sci & Engn, 1677-1 Yoshida, Yamaguchi, Yamaguchi 7538512, Japan
3.Yamaguchi Univ, Res Inst Time Studies, 1677-1 Yoshida, Yamaguchi, Yamaguchi 7538511, Japan
4.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
5.Natl Astron Observ Japan, Mizusawa VLBI Observ, Mizusawa Ku, 2-12 Hoshigaoka Cho, Oshu, Iwate 0230861, Japan
6.NAOJ, Mizusawa VLBI Observ, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
7.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Chuou Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2298510, Japan
8.Grad Univ Adv Studies, Dept Space & Astronaut Sci, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2298510, Japan
9.Osaka Prefecture Univ, Dept Phys Sci, Naka Ku, 1-1 Gakuen Cho, Sakai, Osaka 5998531, Japan
10.Chinese Acad Sci, Key Lab Radio Astron, 2 West Beijing Rd, Beijing 210008, Peoples R China
11.Hokkaido Univ, Dept Cosmosci, Dept Phys, Kita Ku, Kita 10 Nishi 8, Sapporo, Hokkaido 0600810, Japan
12.Ibaraki Univ, Coll Sci, 2-1-1 Bunkyo, Mito, Ibaraki 3108512, Japan
13.Gifu Univ, Fac Engn, 1-1 Yanagido, Gifu, Gifu 5011193, Japan
14.Kagoshima Univ, Grad Sch Sci & Engn, Dept Phys & Astron, 1-21-35 Korimoto, Kagoshima 8900065, Japan
15.Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 305348, South Korea
Recommended Citation
GB/T 7714
Sugiyama, Koichiro,Fujisawa, Kenta,Hachisuka, Kazuya,et al. Observations of 6.7 GHz methanol masers with East-Asian VLBI Network. II. Internal proper motion measurement in G006.79-00.25[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2016,68(5).
APA Sugiyama, Koichiro.,Fujisawa, Kenta.,Hachisuka, Kazuya.,Yonekura, Yoshinori.,Motogi, Kazuhito.,...&Shen, Zhiqiang.(2016).Observations of 6.7 GHz methanol masers with East-Asian VLBI Network. II. Internal proper motion measurement in G006.79-00.25.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,68(5).
MLA Sugiyama, Koichiro,et al."Observations of 6.7 GHz methanol masers with East-Asian VLBI Network. II. Internal proper motion measurement in G006.79-00.25".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 68.5(2016).
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