2014ApJ...780...72E

Query : 2014ApJ...780...72E

2014ApJ...780...72E - Astrophys. J., 780, 72 (2014/January-1)

Discovery of possible molecular counterparts to the infrared double Helix nebula in the Galactic Center.

ENOKIYA R., TORII K., SCHULTHEIS M., ASAHINA Y., MATSUMOTO R., FURUHASHI E., NAKAMURA K., DOBASHI K., YOSHIIKE S., SATO J., FURUKAWA N., MORIBE N., OHAMA A., SANO H., OKAMOTO R., MORI Y., HANAOKA N., NISHIMURA A., HAYAKAWA T., OKUDA T., YAMAMOTO H., KAWAMURA A., MIZUNO N., ONISHI T., MORRIS M.R. and FUKUI Y.

Abstract (from CDS):

We have discovered two molecular features at radial velocities of -35 km/s and 0 km/s toward the infrared Double Helix Nebula (DHN) in the Galactic center with NANTEN2. The two features show good spatial correspondence with the DHN. We have also found two elongated molecular ridges at these two velocities distributed vertically to the Galactic plane over 0.°8. The two ridges are linked by broad features in velocity and are likely connected physically with each other. The ratio between the 12CO J = 2-1 and J = 1-0 transitions is 0.8 in the ridges which is larger than the average value 0.5 in the foreground gas, suggesting the two ridges are in the Galactic center. An examination of the K band extinction reveals a good coincidence with the CO 0 km/s ridge and is consistent with a distance of 8±2 kpc. We discuss the possibility that the DHN was created by a magnetic phenomenon incorporating torsional Alfvén waves launched from the circum-nuclear disk and present a first estimate of the mass and energy involved in the DHN.

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Journal keyword(s): ISM: clouds - radio lines: ISM

Simbad objects: 22

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Number of rows : 22
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 LDN 1641 MoC 05 39.0 -07 00           ~ 502 0
2 Cl Westerlund 2 OpC 10 23 58.1 -57 45 49           ~ 400 0
3 NAME Nor Arm PoG 16 00 -50.0           ~ 485 0
4 * rho Oph ** 16 25 35.11766 -23 26 49.8150 4.30 4.85 4.63 4.27 3.96 B2IV+B2V 670 0
5 [YII2008] MJ G348.5 N MoC 17 08.0 -37 32           ~ 2 0
6 [YII2008] MJ G348.5 S1 MoC 17 18.0 -38 59           ~ 2 0
7 [YII2008] MJ G348.5 S2 MoC 17 22.0 -39 25           ~ 2 0
8 [YII2008] MJ G348.5 S3 MoC 17 24.0 -39 37           ~ 2 0
9 RAFGL 5376 IR 17 42 31.6 -29 09 35           ~ 19 0
10 NAME Sgr C MoC 17 44 36.3 -29 28 13           ~ 400 0
11 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
12 NAME Galactic Circumnuclear Disk PoG 17 45 40.0 -29 00 28           ~ 187 0
13 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
14 NAME Galactic Center Radio Arc Rad 17 46 16.9 -28 48 52           ~ 132 0
15 NAME Galactic CENTRE LOBE Rad 17 46 18.10 -29 38 36.5           ~ 66 0
16 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 2443 1
17 [YII2008] SS 433 N2 MoC 19 07.0 +05 04           ~ 7 0
18 [YII2008] SS 433 N1 MoC 19 08.0 +04 54           ~ 7 0
19 [YII2008] SS 433 N3 MoC 19 08.0 +05 06           ~ 7 0
20 [YII2008] SS 433 N4 MoC 19 10.0 +05 04           ~ 7 0
21 SS 433 HXB 19 11 49.5647697480 +04 58 57.827127648   16.854 14.643     A7Ib 2253 4
22 NGC 7293 PN 22 29 38.5454047152 -20 50 13.747242408 11.894 13.158 13.524 13.689 13.898 DAO.5 983 1

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