J2203+3145

General information

Source (J2000)IAU Source name (J2000)
J2203+3145
Source (B1950)IAU Source name (B1950)
2201+315
Common nameCommon name
4C 31.63
J2000 coordinatesRight ascension α and declination δ in J2000 epoch
α = 22 03 14.975700, δ = +31 45 38.269000
RedshiftRedshift
z = 0.295
Source typeOptical class
Quasar
Optical V magnitudeOptical V magnitude
mV = 15.5

Images and parameters

Observation epoch2011-10-01
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]
1.56
SS [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
0.983 ± 0.026
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
62
SL [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
0.113 ± 0.006
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
3136
Ba [μas]Major axis of the restoring beam [μas]
212
Bb [μas]Minor axis of the restoring beam [μas]
35
BPA [degrees]Position angle of the major axis [degrees]
-17.1
St [mJy]Total clean flux density [mJy]
667
Sp [mJy/beam]Peak flux density [mJy/beam]
167
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
1.16

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]
1 406 ± 73 132 ± 23 66 ± 11 0 0 2.004 ± 0.608 2.42 3.50
2 140 ± 43 48 ± 14 66 ± 19 214 ± 10 -144.1 ± 2.6 0.681 ± 0.351 N/A N/A
3 95 ± 31 48 ± 14 50 ± 15 223 ± 7 -12.3 ± 1.9 0.816 ± 0.432 N/A N/A

Downloads

Epoch Image UV plot RAD plot FITS file of Image
2011-10-01 eps, jpg eps, jpg eps, jpg fits