2009ApJ...694.1629L


C.D.S. - SIMBAD4 rel 1.7 - 2020.05.27CEST07:44:12

2009ApJ...694.1629L - Astrophys. J., 694, 1629-1636 (2009/April-1)

AMiBA: system performance.

LIN K.-Y., LI C.-T., HO P.T.P., HUANG C.-W.L., LIAO Y.-W., LIU G.-C., KOCH P.M., MOLNAR S.M., NISHIOKA H., UMETSU K., WANG F.-C., WU J.-H.P., KESTEVEN M., BIRKINSHAW M., ALTAMIRANO P., CHANG C.-H., CHANG S.-H., CHANG S.-W., CHEN M.-T., MARTIN-COCHER P., HAN C.-C., HUANG Y.-D., HWANG Y.-J., IBANEZ-ROMANO F., JIANG H., KUBO D.Y., OSHIRO P., RAFFIN P., WEI T., WILSON W., CHEN K.-J. and CHIUEH T.

Abstract (from CDS):

The Y.T. Lee Array for Microwave Background Anisotropy started scientific operation in early 2007. This work describes the optimization of the system performance for the measurements of the Sunyaev-Zel'dovich effect for six massive galaxy clusters at redshifts 0.09-0.32. We achieved a point-source sensitivity of 63±7 mJy with the seven 0.6 m dishes in 1 hr of on-source integration in two-patch differencing observations. We measured and compensated for the delays between the antennas of our platform-mounted interferometer. Beam switching was used to cancel instrumental instabilities and ground pick up. Total power and phase stability were good on timescales of hours, and the system was shown to integrate down on equivalent timescales of 300 hr per baseline/correlation, or about 10 hr for the entire array. While the broadband correlator leads to good sensitivity, the small number of lags in the correlator resulted in poorly measured bandpass response. We corrected for this by using external calibrators (Jupiter and Saturn). Using Jupiter as the flux standard, we measured the disk brightness temperature of Saturn to be 149+5–12K.

Abstract Copyright:

Journal keyword(s): cosmic microwave background - galaxies: clusters: general - instrumentation: interferometers

Status at CDS:  

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1017 0
2 ACO 1995 ClG 14 52 55.0 +58 02 59           ~ 118 0
3 ACO 2142 ClG 15 58 20.00 +27 14 00.3           ~ 667 0
4 ACO 2163 ClG 16 15 34.1 -06 07 26           ~ 519 0
5 ACO 2261 ClG 17 22 28.3 +32 09 13           ~ 281 0
6 ACO 2390 ClG 21 53 34.6 +17 40 11           ~ 624 2

    Equat.    Gal    SGal    Ecl

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2020.05.27-07:44:12

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