J1955+5131

General information

Source (J2000)IAU Source name (J2000)
J1955+5131
Source (B1950)IAU Source name (B1950)
1954+513
J2000 coordinatesRight ascension α and declination δ in J2000 epoch
α = 19 55 42.738264, δ = +51 31 48.546020
RedshiftRedshift
z = 1.223
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]
0.69
SS [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
0.227 ± 0.028
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
43
SL [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
0.175 ± 0.005
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
2472
Ba [μas]Major axis of the restoring beam [μas]
126
Bb [μas]Minor axis of the restoring beam [μas]
36
BPA [degrees]Position angle of the major axis [degrees]
-8.3
St [mJy]Total clean flux density [mJy]
261
Sp [mJy/beam]Peak flux density [mJy/beam]
156
σ [mJy/beam]Off-source r.m.s. noise in the residual image [mJy/beam]
5
ξrQuality factor of the residual
noise in the image
1.12

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]
1 228 ± 51 156 ± 29 33 ± 6 0 0 7.819 ± 2.689 1.83 4.29
2 101 ± 47 30 ± 13 70 ± 31 514 ± 16 -23.6 ± 1.7 0.751 ± 0.590 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