TY - JOUR
T1 - Molecular loops in the Galactic centre; Evidence for magnetic floatation accelerating molecular gas
AU - Yamamoto, H.
AU - Fukui, Y.
AU - Fujishita, M.
AU - Torii, K.
AU - Kudo, N.
AU - Nozawa, S.
AU - Takahashi, K.
AU - Matsumoto, R.
AU - MacHida, M.
AU - Kawamura, A.
AU - Yonekura, Y.
AU - Mizuno, N.
AU - Onishi, T.
AU - Mizuno, A.
N1 - Funding Information:
The NANTEN project is based on a mutual agreement between Nagoya Univ. and the CIW. We appreciate the hospitality of the members of the LCO. We thank Japanese public donors and companies for the contribution to the project. This work is financially supported in part by a Grant-in-Aid for Scientific Research from the Ministry of Edu., Culture, Sports, Sci. and Tech. of Japan (No. 15071203) and from JSPS (No. 14102003, core-to-core program 17004).
PY - 2006/8
Y1 - 2006/8
N2 - The new molecular image obtained by NANTEN telescope in the galactic center has revealed the existence of the two loop like structures, loop 1 and loop 2, which have never been seen before toward l = 355 to 358. The velocities of loop 1 and loop 2 are 180 to 90 km s1 and 90 and 40 km s1, respectively, and these two loops have strong velocity gradients. The foot points of the loops show a very broad linewidth of ~40 to 80 km s1 whose large velocity spans are characteristic of the molecular gas near the galactic center. Therefore, we classified the loops as being located in the galactic center and adopt a distance of 8.5 kpc. Then, the projected lengths of loop 1 and loop 2 were estimated as ~500 and ~300 pc, respectively and velocity gradients corresponds to ~80 km s1 per 250 pc along loop 1 and ~60 km s1 per 150 pc along loop 2. The heights of these loops are also estimated as ~220 to ~300 pc from the galactic plane, significantly higher than the typical scale height in the nuclear disk. pdfS174392130700289Xa.pdfissue- edsB. G. Elmegreen and J. PaloudisplayTextSymposiumdispartContributed Papers
AB - The new molecular image obtained by NANTEN telescope in the galactic center has revealed the existence of the two loop like structures, loop 1 and loop 2, which have never been seen before toward l = 355 to 358. The velocities of loop 1 and loop 2 are 180 to 90 km s1 and 90 and 40 km s1, respectively, and these two loops have strong velocity gradients. The foot points of the loops show a very broad linewidth of ~40 to 80 km s1 whose large velocity spans are characteristic of the molecular gas near the galactic center. Therefore, we classified the loops as being located in the galactic center and adopt a distance of 8.5 kpc. Then, the projected lengths of loop 1 and loop 2 were estimated as ~500 and ~300 pc, respectively and velocity gradients corresponds to ~80 km s1 per 250 pc along loop 1 and ~60 km s1 per 150 pc along loop 2. The heights of these loops are also estimated as ~220 to ~300 pc from the galactic plane, significantly higher than the typical scale height in the nuclear disk. pdfS174392130700289Xa.pdfissue- edsB. G. Elmegreen and J. PaloudisplayTextSymposiumdispartContributed Papers
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U2 - 10.1017/S174392130700289X
DO - 10.1017/S174392130700289X
M3 - Article
AN - SCOPUS:37049023239
VL - 2
SP - 501
JO - Proceedings of the International Astronomical Union
JF - Proceedings of the International Astronomical Union
SN - 1743-9213
IS - S237
ER -
