2016A&A...588A.131G


Query : 2016A&A...588A.131G

2016A&A...588A.131G - Astronomy and Astrophysics, volume 588A, 131-131 (2016/4-1)

Warm ISM in the Sagittarius A Complex.

GARCIA P., SIMON R., STUTZKI J., GUSTEN R., REQUENA-TORRES M.A. and HIGGINS R.

Abstract (from CDS):

Aims. We investigate the spatial and spectral distribution of the local standard of rest (LSR) velocity resolved submillimetre emission from the warm (25-90K) gas in the Sgr A Complex, located in the Galactic centre.
Methods. We present large-scale submillimetre heterodyne observations towards the Sgr A Complex covering ∼300arcmin2. These data were obtained in the frame of the Herschel EXtraGALactic guaranteed time key program (HEXGAL) with the Herschel-HIFI satellite and are complemented with submillimetre observations obtained with the NANTEN2/SMART telescope as part of the NANTEN2/SMART Central Nuclear Zone Survey. The observed species are CO(J=4-3) at 461.0GHz observed with the NANTEN2/SMART telescope, and [CI] 3P1-3P0 at 492.2GHz, [CI] 3P2-3P1 at 809.3GHz, [NII] 3P1-3P0 at 1461.1GHz, and [CII] 2P3/2-2P1/2 at 1900.5GHz observed with the Herschel-HIFI satellite. The observations are presented in a 1km/s spectral resolution and a spatial resolution ranging from 46-arcsec to 28-arcsec. The spectral coverage of the three lower frequency lines is ±200km/s, while in the two high frequency lines, the upper LSR velocity limit is +94km/s and +145km/s for the [NII] and [CII] lines, respectively.
Results. The spatial distribution of the emission in all lines is very widespread. The bulk of the carbon monoxide emission is found towards Galactic latitudes below the Galactic plane, and all the known molecular clouds are identified. Both neutral atomic carbon lines have their brightest emission associated with the +50km/s cloud. Their spatial distribution at this LSR velocity describes a crescent-shape structure, which is probably the result of interaction with the energetic event (one or several supernovae explosions) that gave origin to the non-thermal Sgr A-East source. The [CII] and [NII] emissions have most of their flux associated with the thermal arched-filaments and the H region and bright spots in [CII] emission towards the central nuclear disk (CND) are detected. Warm Gas at very high (|Vlsr|>100km/s) LSR velocities is also detected towards the line of sight to the Sgr A Complex, and it is most probably located outside the region, in the X1 orbits.

Abstract Copyright: © ESO, 2016

Journal keyword(s): ISM: atoms - ISM: molecules - ISM: clouds - Galaxy: center

VizieR on-line data: <Available at CDS (J/A+A/588/A131): list.dat>

Simbad objects: 28

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Number of rows : 28
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NAME Sgr C MoC 17 44 36.3 -29 28 13           ~ 331 0
2 NAME NTFs PoC 17 45.2 -29 03           ~ 40 2
3 NAME Sgr A Region reg 17 45 12 -28 48.3           ~ 926 0
4 [MY89] W1 Rad 17 45 36.0 -28 50 50           ~ 12 0
5 GAL 000.07+00.04 reg 17 45 36.7 -28 52 55           ~ 15 1
6 [MY89] W2 Rad 17 45 36.7 -28 51 10           ~ 10 0
7 GCM +0.04 +0.03 MoC 17 45 37 -28 53.0           ~ 3 0
8 NAME Sgr A West HII 17 45 39.4 -29 00 24           ~ 363 0
9 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12541 0
10 NAME Galactic Circumnuclear Disk PoG 17 45 40.0 -29 00 28           ~ 133 0
11 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 3764 3
12 NAME Sgr A East Rad 17 45 41 -29 00.8           ~ 467 2
13 [MY89] E1 Rad 17 45 45.9 -28 50 13           ~ 17 0
14 NAME Banana reg 17 45 46 -28 50.7           ~ 16 1
15 [MY89] E2 Rad 17 45 46.1 -28 50 23           ~ 20 0
16 NAME Arched Filaments PoC 17 45 46.9 -28 50 39           ~ 50 1
17 GCM -0.02 -0.07 MoC 17 45 50.4 -28 59 06           ~ 155 0
18 NAME Arches Cluster Cl* 17 45 50.5 -28 49 28           ~ 676 0
19 GCM +0.06 -0.04 MoC 17 45.9 -28 54           ~ 5 0
20 GCM +0.10 -0.01 MoC 17 45.9 -28 51           ~ 5 0
21 GCM +0.07 -0.08 MoC 17 46 06.2 -28 55 22           ~ 18 0
22 NAME the Brick MoC 17 46 09 -28 43.8           ~ 162 0
23 NAME Sickle HII 17 46 15.2 -28 49 49           ~ 114 0
24 [FMM95] 3 s*b 17 46 15.240 -28 50 03.58           LBV 143 1
25 GAL 000.11-00.11 MoC 17 46 18 -28 54.0           ~ 58 0
26 2E 3944 LXB 17 46 21.09 -28 43 42.3     12.50     ~ 106 0
27 NAME Sgr B MoC 17 47 02 -28 25.4           ~ 201 0
28 NAME Sgr D MoC 17 48 41.75 -28 01 45.0           ~ 126 1

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