J1256-0547

General information

Source (J2000)IAU Source name (J2000)
J1256-0547
Source (B1950)IAU Source name (B1950)
1253-055
Common nameCommon name
3C 279
J2000 coordinatesRight ascension α and declination δ in J2000 epoch
α = 12 56 11.166500, δ = -05 47 21.525000
RedshiftRedshift
z = 0.5362
Source typeOptical class
Quasar
Optical V magnitudeOptical V magnitude
mV = 15.2

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]
22.96
SS [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
18.827 ± 0.98
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
37
SL [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
1.689 ± 0.049
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
1676
Ba [μas]Major axis of the restoring beam [μas]
311
Bb [μas]Minor axis of the restoring beam [μas]
91
BPA [degrees]Position angle of the major axis [degrees]
-21.8
St [mJy]Total clean flux density [mJy]
22696
Sp [mJy/beam]Peak flux density [mJy/beam]
7250
σ [mJy/beam]Off-source r.m.s. noise in the residual image [mJy/beam]
205
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 10005 ± 2157 6440 ± 1167 105 ± 19 0 0 23.196 ± 7.770 11.80 61.40
2 2825 ± 1149 2130 ± 692 80 ± 26 214 ± 13 -21.0 ± 3.5 11.097 ± 6.811 N/A N/A
3 8880 ± 3002 2080 ± 685 370 ± 122 308 ± 61 -152.6 ± 11.2 1.644 ± 0.946 N/A N/A
4 1470 ± 911 902 ± 476 203 ± 107 838 ± 54 -107.6 ± 3.7 0.905 ± 0.878 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