J1229+0203

General information

Source (J2000)IAU Source name (J2000)
J1229+0203
Source (B1950)IAU Source name (B1950)
1226+023
Common nameCommon name
3C 273B
J2000 coordinatesRight ascension α and declination δ in J2000 epoch
α = 12 29 06.699700, δ = +02 03 08.598000
RedshiftRedshift
z = 0.1583
Source typeOptical class
BL Lac object
Optical V magnitudeOptical V magnitude
mV = 12.9

Images and parameters

Observation epoch2010-10-01
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]
16.21
SS [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
3.242 ± 0.079
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
69
SL [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
0.404 ± 0.04
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
1460
Ba [μas]Major axis of the restoring beam [μas]
383
Bb [μas]Minor axis of the restoring beam [μas]
138
BPA [degrees]Position angle of the major axis [degrees]
-22.9
St [mJy]Total clean flux density [mJy]
4523
Sp [mJy/beam]Peak flux density [mJy/beam]
1425
σ [mJy/beam]Off-source r.m.s. noise in the residual image [mJy/beam]
68
ξrQuality factor of the residual
noise in the image
1.01

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 3108 ± 713 1800 ± 357 202 ± 40 0 0 1.456 ± 0.528 2.21 5.32
2 1641 ± 517 1020 ± 273 170 ± 46 671 ± 23 -139.2 ± 1.9 1.079 ± 0.531 N/A N/A
3 261 ± 240 158 ± 124 157 ± 123 1391 ± 62 -138.1 ± 2.5 0.203 ± 0.294 N/A N/A
4 401 ± 254 384 ± 176 <103 1849 ± 24 -118.8 ± 0.7 >0.722 N/A N/A
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]
11.41
SS [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
5.094 ± 0.095
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
156
SL [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
0.149 ± 0.024
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
575
Ba [μas]Major axis of the restoring beam [μas]
127
Bb [μas]Minor axis of the restoring beam [μas]
188
BPA [degrees]Position angle of the major axis [degrees]
-34.8
St [mJy]Total clean flux density [mJy]
2482
Sp [mJy/beam]Peak flux density [mJy/beam]
1510
σ [mJy/beam]Off-source r.m.s. noise in the residual image [mJy/beam]
76
ξrQuality factor of the residual
noise in the image
0.83

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 2804 ± 722 1590 ± 356 219 ± 49 0 0 1.122 ± 0.458 0.19 0.62

Downloads

Epoch Image UV plot RAD plot FITS file of Image
2010-10-01 eps, jpg eps, jpg eps, jpg fits
2011-05-01 eps, jpg eps, jpg eps, jpg fits