1998ApJS..118..455O

Query : 1998ApJS..118..455O

1998ApJS..118..455O - Astrophys. J., Suppl. Ser., 118, 455-515 (1998/October-0)

A large-scale CO survey of the Galactic Center.

OKA T., HASEGAWA T., SATO F., TSUBOI M. and MIYAZAKI A.

Abstract (from CDS):

We present high-resolution CO images of the Galactic center region taken with the 2x2 focal-plane array receiver mounted on the 45 m telescope of Nobeyama Radio Observatory. We have collected about 44,000 12C16O (J = 1-0) spectra and over 13,000 13C16O (J = 1-0) spectra with a 34" (1.4 pc) grid spacing. The 12CO mapping area is roughly -1°.5 ≤ l ≤ +3°.4 and -0°.6 ≤ b ≤ +0°.6, which covers almost the full extent of the molecular gas concentration in the Galactic center. These CO images demonstrate extremely complex distribution and kinematics of molecular gas in the Galactic center. While its large-scale behavior can be attributed to the well-known coherent features, bright CO emission arises from a number of compact (d ≤ 10 pc) clouds with large velocity widths (ΔV ≥ 30 km.s–1 ). The small-scale structure of molecular gas is characterized by filaments, arcs, and shells. The boisterous molecular gas kinematics there may be a result of violent release of kinetic energy by a number of supernova explosions and/or Wolf-Rayet stellar winds.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Center - Galaxy: Kinematics and Dynamics - ISM: Molecules - Surveys

Nomenclature: [OHS98] AF N=1, [OHS98] PA N=1, [OHS98] CF N=1, [OHS98] SnF N=1, [OHS98] StF N=1, [OHS98] ES N=1, [OHS98] EA N=1, [OHS98] NS N=1, [OHS98] MF N=1, [OHS98] GA A (Nos A-B), [OHS98] CO L.ll+B.bb N=6.

CDS comments: Table 1: Clump 2 = Bania Clump 2.

Simbad objects: 23

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Number of rows : 23
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME Sgr C MoC 17 44 36.3 -29 28 13           ~ 354 0
2 NAME Snaky Filament PoC 17 45 -29.2           ~ 1 0
3 NAME Polar Arc PoC 17 45 -28.8           ~ 11 0
4 NAME NTFs PoC 17 45.2 -29 03           ~ 45 2
5 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 14388 0
6 CO 000.02-00.02 MoC 17 45.7 -28 56           ~ 32 0
7 NAME Arched Filaments PoC 17 45 46.9 -28 50 39           ~ 52 1
8 NAME Galactic Center Radio Arc Rad 17 46 16.9 -28 48 52           ~ 124 0
9 CO 000.13-00.13 MoC 17 46.4 -28 54           ~ 22 0
10 NAME Expanding Shell PoC 17 46.5 -28 46           ~ 17 0
11 NAME Expanding Arc PoC 17 46.7 -28 26           ~ 2 0
12 NAME Great Arc A PoC 17 47 -28.4           ~ 1 0
13 NAME Cometary Filaments PoC 17 47 -28.3           ~ 1 0
14 NAME Sgr B MoC 17 47 02 -28 25.4           ~ 221 0
15 NAME Nest of Shells PoC 17 48 -27.9           ~ 1 0
16 NAME Molecular Flare PoC 17 48 -27.7           ~ 1 0
17 CO 001.28+00.06 MoC 17 48.4 -27 49           ~ 3 0
18 CO 001.60+00.00 MoC 17 49.4 -27 34           ~ 2 0
19 GAL 001.6-00.025 MoC 17 49 29 -27 36.8           ~ 31 0
20 NAME Great Arc B PoC 17 51 -26.6           ~ 1 0
21 CO 003.34+00.44 MoC 17 51.7 -25 51           ~ 2 0
22 Bania Clump 2 MoC 17 51 42.6 -26 17 18           ~ 38 1
23 CO 002.88+00.08 MoC 17 52.0 -26 26           ~ 2 0

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