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Table of ALMA Observing Bands (Dec 2006).
Table 1:
ALMA Receiver Bands
Band
Number | Frequency
Range
(GHz) |
Wavelength
(mm) |
Instantaneous
Bandwidth (GHz) |
Configuration |
| 1 | 31.3 - 45.0 |
6.7 - 9.6 |
1 x 8 |
SSB |
| 2 | 67 - 90 |
3.3 - 4.5 |
1 x 8 |
SSB |
| 3 | 84 - 116 |
2.6 - 3.6 |
2 x 4 |
2SB |
| 4 | 125 -
163 |
1.8 - 2.4 |
2 x 4 |
2SB |
| 5 | 163 - 211 |
1.4 - 1.8 |
2 x 4 |
2SB |
| 6 | 211 -
275 |
1.1 - 1.4 |
2 x 5.5 |
2SB |
| 7 | 275 -
373 |
0.8 - 1.1 |
2 x 4 |
2SB |
| 8 | 385 -
500 |
0.6 - 0.8 |
2 x 4 |
2SB |
| 9 | 602 -
720 |
0.4 - 0.5 |
2 x 8 |
DSB |
| 10 | 787 -
950 |
0.3 - 0.4 |
2 x 8 |
DSB |
SSB - Single sideband
2SB - both sidebands detected separately
DSB - Double sideband
At least two of Bands 3, 6, 7 and 9 will be available for Early
Science (~2009 Q3). These four plus bands 4 and 8 will be available
at full science operations in 2012. Bands 1 and 2 will be developed
in the future.
Table of ALMA Sensitivity Goals for the 12 m Array (Dec 2006): For
an integration time of 60 seconds, a spectral resolution of 1 km
s-1, the RMS flux density, ΔS, and the brightness
temperature sensitivity, ΔT, with a 64 antenna array and maximum
baseline Bmax, are given in Table 2:
Table 2:
ALMA Sensivity
Goals for the 12 m array*
|
Frequency |
Continuum |
Spectral Line
|
Bmax = 0.2 km
| Bmax = 14.7 km
|
| (GHz) |
ΔS
(mJy) |
ΔS (mJy) |
Beam (arcsec) | ΔTcont(K) | ΔTline(K) |
Beam (arcsec) |
ΔTcont(K) | ΔTline(K) |
| 110 |
0.047 |
7.0 | 3.18 |
0.0005 | 0.070 | 0.038 |
3.3 | 482 |
| 140 |
0.055 |
7.1 | 2.50 |
0.0005 | 0.071 | 0.030 |
3.8 | 495 |
| 230 |
0.100 |
10.2 | 1.52 |
0.0010 | 0.104 | 0.018 |
6.9 | 709 |
| 345 |
0.195 |
16.3 | 1.01 |
0.0020 | 0.167 | 0.012 | 13.5 | 1128 |
| 409 |
0.296 |
22.6 | 0.86 |
0.0031 | 0.234 | 0.010 | 20.5 | 1569 |
| 675 |
1.042 |
62.1 | 0.52 |
0.0108 | 0.641 | 0.006 | 72.2 | 4305 |
*Data retreived using the ESO ALMA Senstivity Calculator at: ESO Calculator
Collection of links reporting ALMA's expected continuum and line
sensitivity.
- NRAO ALMA Brochure
(pdf, 0.8MB; see back cover for sensitivity table)
- ESO's ALMA
Sensitivity Calculator
- "Scientific Requirements of ALMA, and its Capabilities for Key-projects:
Extragalactic", Carloes De Breuck, 2005. To appear in the proceedings of The Dusty and
Molecular Universe. A prelude to HERSCHEL and ALMA, 27 -
29 October 2004, Paris (astro-ph/0410746)
- Appendix A-D of "ALMA
Scientific Specifications
and Requirements (vers.A;
2004-Aug-03), giving all equations and assumptions going into
sensitivity calculations.
-
Figure of Band 3, 6, 7, 9 Continuum Sensitivity for N=6-64
Antennas (2002-Aug-28)
-
Continuum Sensitivity of Submm Telescopes, including ALMA, from
CfA's SPST project.
-
Google search for "Sensitivity" in www.alma.nrao.edu
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