J0721+7120

General information

Source (J2000)IAU Source name (J2000)
J0721+7120
Source (B1950)IAU Source name (B1950)
0716+714
J2000 coordinatesRight ascension α and declination δ in J2000 epoch
α = 07 21 53.448400, δ = +71 20 36.363000
RedshiftRedshift
z = 0.3
Source typeOptical class
BL Lac object
Optical V magnitudeOptical V magnitude
mV = 15.5

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]
4.91
SS [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
1.216 ± 0.105
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
0.533 ± 0.028
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
3135
Ba [μas]Major axis of the restoring beam [μas]
55
Bb [μas]Minor axis of the restoring beam [μas]
40
BPA [degrees]Position angle of the major axis [degrees]
-65.9
St [mJy]Total clean flux density [mJy]
2935
Sp [mJy/beam]Peak flux density [mJy/beam]
1284
σ [mJy/beam]Off-source r.m.s. noise in the residual image [mJy/beam]
25
ξrQuality factor of the residual
noise in the image
1.44

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 1489 ± 275 1269 ± 178 18 ± 3 0 0 97.111 ± 26.362 20.50 204.00
2 578 ± 178 416 ± 104 27 ± 7 44 ± 3 10.9 ± 4.4 17.093 ± 8.027 N/A N/A
3 594 ± 179 445 ± 108 25 ± 6 111 ± 3 32.1 ± 1.6 20.395 ± 9.295 N/A N/A
4 357 ± 175 139 ± 63 50 ± 23 276 ± 11 41.7 ± 2.3 3.120 ± 2.529 N/A N/A
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]
SS [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
1.309 ± 0.039
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
39
SL [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
0.859 ± 0.017
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
3138
Ba [μas]Major axis of the restoring beam [μas]
55
Bb [μas]Minor axis of the restoring beam [μas]
39
BPA [degrees]Position angle of the major axis [degrees]
-17.9
St [mJy]Total clean flux density [mJy]
1119
Sp [mJy/beam]Peak flux density [mJy/beam]
980
σ [mJy/beam]Off-source r.m.s. noise in the residual image [mJy/beam]
22
ξrQuality factor of the residual
noise in the image
0.7

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 1006 ± 211 984 ± 147 <3 0 0 >372.818 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
2011-10-01 eps, jpg eps, jpg eps, jpg fits