2000AJ....119..207L

Query : 2000AJ....119..207L

2000AJ....119..207L - Astron. J., 119, 207-240 (2000/January-0)

A wide-field 90 centimeter VLA image of the Galactic Center region.

LAROSA T.N., KASSIM N.E., LAZIO T.J.W. and HYMAN S.D.

Abstract (from CDS):

We present a wide-field, high dynamic range, high-resolution, long-wavelength (λ=90 cm) VLA image of the Galactic center region. The image is centered on Sgr A, covers an area of 4°x5° with an angular resolution of 43", and has a rms sensitivity of ~5 mJy.beam–1. The image was constructed from archival (1989 and 1991) VLA data of Pedlar et al. and (ref???)Anantharamaiah et al. using new three-dimensional image restoration techniques. These three-dimensional imaging techniques resolve the problem of non-coplanar baselines encountered at long wavelengths and yield distortion-free imaging of far-field sources with improved sensitivity. At λ=90 cm the VLA is sensitive to both thermal and nonthermal emission and the resulting image gives an unprecedented contextual perspective of the large-scale radio structure in this unique and complicated region. We have catalogued over a hundred sources from this image and present for each source its 90 cm flux density, position, and size. For many of the small- diameter sources, we also derive the 20/90 cm spectral index. The spectral index as a function of length along several of the isolated nonthermal filaments has been estimated and found to be constant. We have found six new small-diameter sources, as well as several extended regions of emission, which are clearly distinct sources that have not been previously identified at higher frequencies. These data are presented as a first epoch of VLA observations that can be used to search for source variability in conjunction with a second epoch of observations that were recently initiated.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Center - Radio Continuum

Nomenclature: Table 1: NTF GLLL.ll+B.bb N=6 added. Table 2: [LKL2000] NN (Nos 1-78) = [LKL2000] GLLL.ll+B.bb N=78.

Errata: Erratum vol. 119, p. 3145 (2000)

Simbad objects: 114

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Number of rows : 114
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 NVSS J173912-284658 Rad 17 39 12.872 -28 47 01.58           ~ 3 1
2 [LKL2000] 46 Rad 17 39 27 -28 06.2           ~ 1 0
3 [LKL2000] 25 Rad 17 39 31 -28 43.5           ~ 1 0
4 [LKL2000] 35 Rad 17 39 38 -28 33.8           ~ 1 0
5 [LKL2000] 13 Rad 17 39 51 -29 08.6           ~ 1 0
6 [LKL2000] 53 Rad 17 40 01 -27 48.1           ~ 1 0
7 [LKL2000] 32 Rad 17 40 08 -28 42.0           ~ 1 0
8 NAME Tornado Nebula SNR 17 40 16.360 -30 58 18.87           ~ 148 0
9 TXS 1737-287 Rad 17 40 41.637 -28 48 13.75           ~ 5 1
10 [LKL2000] 12 Rad 17 40 55 -29 29.8           ~ 1 0
11 NTF G358.85+0.47 Rad 17 41 00 -29 39.9           ~ 3 0
12 NAME Pelican Filament Rad 17 41 00.3 -29 39 47           ~ 18 0
13 [LKL2000] 1 Rad 17 41 03 -30 29.6           ~ 1 0
14 [LKL2000] 31 Rad 17 41 26 -28 53.6           ~ 1 0
15 [LKL2000] 52 Rad 17 41 38 -28 04.6           ~ 1 0
16 [LKL2000] 18 Rad 17 42 02 -29 13.1           ~ 1 0
17 [LKL2000] 74 Rad 17 42 02 -27 13.3           ~ 1 0
18 [GWC93] 18 Rad 17 42 02.8 -30 06 41           ~ 5 0
19 [GWC93] 19 SNR 17 42 04.9 -30 04 04           ~ 7 0
20 [LKL2000] 73 Rad 17 42 05 -27 15.0           ~ 1 0
21 [LKL2000] 17 Rad 17 42 08 -29 15.4           ~ 1 0
22 [LKL2000] 19 Rad 17 42 12 -29 13.5           ~ 1 0
23 [GWC93] 23 Rad 17 42 13.3 -29 49 55           ~ 2 0
24 [LKL2000] 22 Rad 17 42 21 -29 13.0           ~ 1 0
25 [LKL2000] 4 Rad 17 42 25 -30 08.0           ~ 1 0
26 [ABB2014] WISE G358.787+00.061 HII 17 42 27.6 -29 55 58           ~ 6 0
27 [LKL2000] 55 Rad 17 42 28 -28 02.2           ~ 1 0
28 [AAJ2015] G358.600-00.057 HII 17 42 28.3 -30 09 31           ~ 6 0
29 NVSS J174244-294915 Rad 17 42 44.0 -29 49 16           ~ 20 1
30 [LKL2000] 6 Rad 17 42 47 -30 05.8           ~ 1 0
31 [LKL2000] 56 Rad 17 42 47 -28 04.5           ~ 1 0
32 [LKL2000] 7 Rad 17 42 55 -30 06.7           ~ 1 0
33 [LKL2000] 28 Rad 17 42 55 -29 09.2           ~ 1 0
34 [LKL2000] 42 Rad 17 43 03 -28 51.0           ~ 1 0
35 [LKL2000] 64 Rad 17 43 06 -27 49.4           ~ 1 0
36 [LKL2000] 70 Rad 17 43 06 -27 36.0           ~ 1 0
37 SNR G359.1-00.2 SR? 17 43 29 -29 45.9           ~ 7 0
38 [LKL2000] 34 Rad 17 43 29 -29 06.8           ~ 1 0
39 [LKL2000] 38 Rad 17 43 42 -29 01.7           ~ 1 0
40 [LKL2000] 20 Rad 17 43 43 -29 25.3           ~ 1 0
41 NAME the Cane Rad 17 43 44 -28 51.3           ~ 8 0
42 NTF G359.43+0.13 Rad 17 43 45 -29 21.3           ~ 5 0
43 [LKL2000] 48 Rad 17 43 45 -28 37.4           ~ 1 0
44 NAME the Ripple Filament Rad 17 43 52.0 -29 13 47           ~ 52 1
45 NTF G359.54+0.18 Rad 17 43 54 -29 13.8           ~ 4 1
46 [LKL2000] 29 Rad 17 43 56 -29 16.6           ~ 1 0
47 NAME Gal Center Snake Rad 17 44 17.9 -29 46 00           ~ 62 1
48 [LKL2000] 57 Rad 17 44 23 -28 15.0           ~ 1 0
49 [LKL2000] 21 Rad 17 44 27 -29 29.6           ~ 1 0
50 [LKL2000] 15 Rad 17 44 28 -29 36.2           ~ 1 0
51 NTF G359.45-0.01 Rad 17 44 28 -29 25.3           ~ 1 0
52 [LS95] 174116.9-292406 PoC 17 44 28.2 -29 25 21           ~ 2 1
53 NAME Curved Filament Rad 17 44 29 -29 01.6           ~ 12 1
54 NTF G359.79+0.17 Rad 17 44 29 -29 01.6           ~ 2 0
55 [LKL2000] 33 Rad 17 44 32 -29 16.6           ~ 1 0
56 NAME Sgr C MoC 17 44 36.3 -29 28 13           ~ 400 0
57 [LKL2000] 16 Rad 17 44 37 -29 35.6           ~ 1 0
58 [LKL2000] 44 Rad 17 44 37 -28 57.1           ~ 2 0
59 [LKL2000] 14 Rad 17 44 55 -29 41.1           ~ 2 0
60 [LKL2000] 37 Rad 17 44 59 -29 16.0           ~ 2 0
61 [LKL2000] 26 Rad 17 45 01 -29 28.6           ~ 3 0
62 [LKL2000] 36 Rad 17 45 05 -29 16.8           ~ 2 0
63 [LKL2000] 40 Rad 17 45 06 -29 11.3           ~ 2 0
64 NAME Sgr A Region reg 17 45 12 -28 48.3           ~ 955 0
65 NTF G000.09+0.17 Rad 17 45 13 -28 46.8           ~ 1 0
66 NTF G359.96+0.09 Rad 17 45 15 -28 55.6           ~ 1 0
67 NAME Northern Thread in GC Rad 17 45 15 -28 48.0           ~ 21 0
68 SNR G359.1-00.5 SNR 17 45 30 -29 57.0           ~ 179 1
69 [LKL2000] 27 Rad 17 45 39 -29 31.7           ~ 1 0
70 NAME Sgr A West HII 17 45 39.4 -29 00 24           ~ 381 0
71 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
72 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
73 NAME Sgr A East SNR 17 45 41 -29 00.8           ~ 523 2
74 NAME Southern Thread in GC Rad 17 46 05 -28 55.0           ~ 16 0
75 [LKL2000] 41 Rad 17 46 10 -29 16.5           ~ 1 0
76 SNR G000.3+00.0 SNR 17 46 15 -28 38.0           ~ 40 1
77 NAME Galactic Center Radio Arc Rad 17 46 16.9 -28 48 52           ~ 132 0
78 NAME Galactic CENTRE LOBE Rad 17 46 18.10 -29 38 36.5           ~ 66 0
79 [LKL2000] 54 Rad 17 46 28 -28 36.0           ~ 2 0
80 SNR G359.0-00.9 Rad 17 46 50 -30 16.0           ~ 54 1
81 [LKL2000] 69 Rad 17 46 52 -28 07.5           ~ 1 0
82 NAME Sgr B1 MoC 17 47 02.0 -28 31 57           ~ 177 0
83 [LKL2000] 61 Rad 17 47 13 -28 24.8           ~ 1 0
84 [LKL2000] 65 Rad 17 47 13 -28 22.9           ~ 1 0
85 1LC 000.600-0.048 Rad 17 47 13.77 -28 26 53.3           ~ 8 0
86 NAME Mouse Rad 17 47 15.78 -29 58 01.0           ~ 120 1
87 SNR G000.9+00.1 SNR 17 47.3 -28 09           ~ 222 1
88 [LKL2000] 66 Rad 17 47 20 -28 23.2           ~ 1 0
89 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 2443 1
90 [LKL2000] 62 Rad 17 47 22 -28 25.3           ~ 2 0
91 [LKL2000] 63 Rad 17 47 34 -28 26.8           ~ 1 0
92 TXS 1744-304 Rad 17 47 42.974 -30 29 56.89           ~ 1 0
93 [LKL2000] 67 Rad 17 47 44.54 -28 21 44.8           ~ 2 0
94 [LKL2000] 75 Rad 17 47 58 -27 35.2           ~ 1 0
95 [LKL2000] 68 Rad 17 48 01 -28 16.4           ~ 1 0
96 [LKL2000] 50 Rad 17 48 05 -29 04.0           ~ 1 0
97 [LKL2000] 51 Rad 17 48 05 -29 00.5           ~ 1 0
98 TXS 1745-275 Rad 17 48 09 -27 33.7           ~ 1 0
99 [LKL2000] 49 Rad 17 48 28 -29 13.7           ~ 1 0
100 [LKL2000] 39 Rad 17 48 29 -29 39.1           ~ 1 0
101 NAME Sgr D MoC 17 48 41.75 -28 01 45.0           ~ 137 1
102 NAME Sgr D HII HII 17 48 41.79 -28 01 41.3           ~ 69 1
103 NAME Sgr D SNR SNR 17 48.7 -28 07           ~ 17 0
104 SNR G001.9+00.3 SNR 17 48 46.02 -27 09 52.0           ~ 243 1
105 [LKL2000] 71 Rad 17 48 47 -28 20.1           ~ 1 0
106 [LKL2000] 47 Rad 17 49 07 -29 23.7           ~ 1 0
107 [LKL2000] 58 Rad 17 49 13 -28 51.9           ~ 1 0
108 GAL 359.91-01.03 ? 17 49.4 -29 33           ~ 1 1
109 NTF G359.91-1.03 Rad 17 49 28 -29 32.1           ~ 1 0
110 [LKL2000] 59 Rad 17 50 24 -28 53.2           ~ 1 0
111 [LKL2000] 72 Rad 17 52 23 -28 37.7           ~ 1 0
112 [LKL2000] 43 Rad 17 52 31 -30 01.1           ~ 2 0
113 NVSS J175233-295645 Rad 17 52 33.10799805 -29 56 44.9191885           ~ 26 1
114 PSR B1749-28 Psr 17 52 58.70700 -28 06 36.0000           ~ 277 1

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