2011MNRAS.416..832W

Query : 2011MNRAS.416..832W

2011MNRAS.416..832W - Mon. Not. R. Astron. Soc., 416, 832-856 (2011/September-2)

The Australia Telescope Compact Array Broad-Band Backend: description and first results.

WILSON W.E., FERRIS R.H., AXTENS P., BROWN A., DAVIS E., HAMPSON G., LEACH M., ROBERTS P., SAUNDERS S., KORIBALSKI B.S., CASWELL J.L., LENC E., STEVENS J., VORONKOV M.A., WIERINGA M.H., BROOKS K., EDWARDS P.G., EKERS R.D., EMONTS B., HINDSON L., JOHNSTON S., MADDISON S.T., MAHONY E.K., MALU S.S., MASSARDI M., MAO M.Y., McCONNELL D., NORRIS R.P., SCHNITZELER D., SUBRAHMANYAN R., URQUHART J.S., THOMPSON M.A. and WARK R.M.

Abstract (from CDS):

Here, we describe the Compact Array Broad-band Backend (CABB) and present first results obtained with the upgraded Australia Telescope Compact Array (ATCA). The 16-fold increase in observing bandwidth, from 2 {x} 128 to 2 {x} 2048 MHz, high-bit sampling and the addition of 16 zoom windows (each divided into further 2048 channels) provide major improvements for all ATCA observations. The benefits of the new system are: (1) hugely increased radio continuum and polarization sensitivity as well as image fidelity; (2) substantially improved capability to search for and map emission and absorption lines over large velocity ranges; (3) simultaneous multi-line and continuum observations; (4) increased sensitivity, survey speed and dynamic range due to high-bit sampling and (5) high-velocity resolution, while maintaining full polarization output. The new CABB system encourages all observers to make use of both spectral line and continuum data to achieve their full potential.

Given the dramatic increase of the ATCA capabilities in all bands (ranging from 1.1 to 105 GHz) CABB enables scientific projects that were not feasible before the upgrade, such as simultaneous observations of multiple spectral lines, on-the-fly mapping, fast follow-up of radio transients (e.g. the radio afterglow of new supernovae) and maser observation at high-velocity resolution and full polarization. The first science results presented here include wide-band spectra, high dynamic-range images and polarization measurements, highlighting the increased capability and discovery potential of the ATCA.

The Australia Telescope Compact Array is part of the Australia Telescope National Facility which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. Herschel–ATLAS: counterparts from the ultraviolet–near-infrared in the science demonstration phase catalogue


Abstract Copyright: 2011 CSIRO Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): instrumentation: interferometers - methods: observational - ISM: general - galaxies: general - radio continuum: general - radio lines: general

Simbad objects: 24

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Number of rows : 24
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 NGC 612 Sy2 01 33 57.751 -36 29 35.80   13.90 13.15 12.33   ~ 252 0
2 ClG J0152-1358 ClG 01 52 41.3 -13 58 13           ~ 262 3
3 ATCDFS9 J033213.04-274351.5 rG 03 32 13.08 -27 43 51.0           ~ 23 0
4 NAME Extended Chandra Deep Field South reg 03 32 30.0 -27 48 20           ~ 862 0
5 ESO 252-18A Sy1 05 19 49.7229323856 -45 46 43.852662732   15.73 15.77 14.85   ~ 714 0
6 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 2087 1
7 ClG 0657-56 ClG 06 58 26.9 -55 58 21           ~ 1077 1
8 NAME Carina Flare Supershell sh 10 57 -55.           ~ 17 0
9 NAME Crux-Scutum Spiral Arm reg 12 30 -60.0           ~ 323 0
10 CPD-63 2495 HXB 13 02 47.6544015048 -63 50 08.626970292 10.34 10.72 9.98 10.03   O9.5Ve 852 0
11 Cl Danks 1 OpC 13 12 29.0 -62 41 56           ~ 80 0
12 WR 48a WR* 13 12 39.6052790136 -62 42 55.939362876       16.081   WC6 106 0
13 Cl Danks 2 OpC 13 12 53.3 -62 40 52           ~ 73 0
14 GAL 305.3+00.1 bub 13 13 01.2 -62 42 37           ~ 10 0
15 PMN J1355-6326 Rad 13 55 46.61168 -63 26 42.5760           ~ 28 1
16 NAME Circinus Galaxy Sy2 14 13 09.906 -65 20 20.47   10.89 9.84 10.6 10.0 ~ 1331 1
17 SN 1996cr SN* 14 13 10.01139 -65 20 44.5654     19.5     SNIIn: 90 1
18 IRAS 16547-4247 Y*O 16 58 17.208 -42 52 08.16           ~ 187 0
19 NGC 6334 HII 17 20 53 -36 07.9           ~ 740 0
20 NAME NGC 6334-I Cl* 17 20 53.35 -35 47 01.5           ~ 373 0
21 NAME NGC 6334 I(N) smm 17 20 54 -35 45.0           ~ 165 1
22 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 2443 1
23 QSO B1921-293 BLL 19 24 51.05595254 -29 14 30.1210248   18.71 18.21 15.07   ~ 918 1
24 ICRF J193925.0-634245 Sy2 19 39 25.0245304992 -63 42 45.640373400   18.87 18.37 17.64   ~ 1332 2

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