J1800+7828

General information

Source (J2000)IAU Source name (J2000)
J1800+7828
Source (B1950)IAU Source name (B1950)
1803+784
J2000 coordinatesRight ascension α and declination δ in J2000 epoch
α = 18 00 45.683900, δ = +78 28 04.018000
RedshiftRedshift
z = 0.6797
Source typeOptical class
BL Lac object
Optical V magnitudeOptical V magnitude
mV = 17

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]
2.36
SS [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
2.847 ± 0.075
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
53
SL [Jy]Correlated flux density [Jy] measured on projected baseline length listed in the next column
0.282 ± 0.012
BS [Mλ]Projected baseline length [Mλ] for the measured flux density listed in the previous column
3134
Ba [μas]Major axis of the restoring beam [μas]
46
Bb [μas]Minor axis of the restoring beam [μas]
43
BPA [degrees]Position angle of the major axis [degrees]
-35.7
St [mJy]Total clean flux density [mJy]
1736
Sp [mJy/beam]Peak flux density [mJy/beam]
548
σ [mJy/beam]Off-source r.m.s. noise in the residual image [mJy/beam]
11
ξrQuality factor of the residual
noise in the image
1.13

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 1102 ± 184 480 ± 73 47 ± 7 0 0 13.960 ± 3.816 7.42 23.70
2 213 ± 87 87 ± 33 51 ± 19 263 ± 10 140.0 ± 2.1 2.316 ± 1.551 N/A N/A
3 336 ± 122 101 ± 35 67 ± 23 966 ± 12 -118.0 ± 0.7 2.072 ± 1.266 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