Object: 04085+3834 On scan num: 1078 1080 1082 1084 1086 1088 Off scan num: 1079 1081 1083 1085 1087 1089 R.A.: 4.203437 hrs Dec.: 38.700413 deg On azimuth: 297.251367 deg On zenith dist.: 59.309854 deg Off azimuth: 297.235452 deg Off zenith dist.: 59.283505 deg MJD: 52245 UTC: 0.415694 Center freq.: 1403.081859 MHz Doppler: -0.00000513 Num. correlators: 2 Spectrom. atten.: 35 41 dB Bandwidth: 40.0 MHz Num. channels: 1024 Eff. integration: 1800 seconds
This spectrum is the integration of all data for the scan with spectra from both polarizations added together. The spectral intensities are Ssys * (on - off) / off, where Ssys is the system temperature in Jy. The system noise flux density equivalent is calibrated for each scan with a calibration noise source firing during each scan. The cal value, in Jy, is calibrated by comparison with a number of continuum sources as described in the summary web page
This is the section of spectrum measured to obtain the parameters listed below. The three horizontal dotted lines are the baseline, the peak level selected, and 20% of the peak level. The two vertical dotted lines mark the selected 20% line width edges. The solid horizontal line marks the velocity range chosen for the the line profile flux density integral. This spectrum has a second-order least squares fit baseline removed using most of the baseline shown in Figure 1.
Peak intensity: 0.017 Jy Lower 20% velocity: 5448.8 km/s Upper 20% velocity: 6740.9 km/s Systemic velocity: 6094.9 km/s Line width (20%): 1292.1 km/s Profile integral: 14.05 Jy * km/s A: 8.23 B: 14.19 Ratio B/A: 1.724 Flux integral velocity range: 5040.9 - 7091.9 km/s
looks like several profiles blended together