J1640+3946

General information

Source (J2000)IAU Source name (J2000)
J1640+3946
Source (B1950)IAU Source name (B1950)
1638+398
J2000 coordinatesRight ascension α and declination δ in J2000 epoch
α = 16 40 29.632770, δ = +39 46 46.028350
RedshiftRedshift
z = 1.666
Source typeOptical class
Quasar
Optical V magnitudeOptical V magnitude
mV = 18.5

Images and parameters

Observation epoch2011-05-01
S86 GHzTotal single dish flux density measured at 86 GHz obtained from pointing and calibration scan measurements at Pica Veleta or Plateau de Bure [Jy]
1
SS [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
1.105 ± 0.022
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
46
SL [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
0.158 ± 0.015
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
3030
Ba [μas]Major axis of the restoring beam [μas]
190
Bb [μas]Minor axis of the restoring beam [μas]
35
BPA [degrees]Position angle of the major axis [degrees]
-8.9
St [mJy]Total clean flux density [mJy]
630
Sp [mJy/beam]Peak flux density [mJy/beam]
265
σ [mJy/beam]Off-source r.m.s. noise in the residual image [mJy/beam]
4
ξrQuality factor of the residual
noise in the image
1.14

Component
StotTotal flux density of the component [mJy]
SpeakPeak flux density of the component [mJy/beam]
dComponent size [μas]
rComponent's offset from the core [μas]
θPosition angle of the offset [degrees]
TbBrightness temperature obtained from the model fits [1010K]
Tb,minVisibility based estimate of the minimum brightness temperature [1010K]
Tb,limVisibility based estimate of the maximum brightness temperature [1010K]
1 400 ± 67 196 ± 29 46 ± 7 0 0 8.451 ± 2.285 4.45 6.38
2 226 ± 53 96 ± 21 50 ± 11 137 ± 5 158.0 ± 2.3 3.991 ± 1.547 N/A N/A
3 87 ± 40 26 ± 12 49 ± 22 261 ± 11 -110.7 ± 2.4 1.570 ± 1.208 N/A N/A
4 143 ± 52 40 ± 14 193 ± 67 261 ± 34 -62.3 ± 7.3 0.168 ± 0.103 N/A N/A

Downloads

Epoch Image UV plot RAD plot FITS file of Image
2011-05-01 eps, jpg eps, jpg eps, jpg fits