Object: 04083+3838 On scan num: 2302 2304 2306 2308 2310 2312 Off scan num: 2303 2305 2307 2309 2311 2313 R.A.: 4.200197 hrs Dec.: 38.769024 deg On azimuth: 287.429998 deg On zenith dist.: 40.162686 deg Off azimuth: 287.416501 deg Off zenith dist.: 40.134432 deg MJD: 52254 UTC: 0.317836 Center freq.: 1403.061244 MHz Doppler: -0.00001983 Num. correlators: 2 Spectrom. atten.: 33 39 dB Bandwidth: 40.0 MHz Num. channels: 1024 Eff. integration: 1560 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 spectrum is the same as Figure 1 but with 7 60-second sub-integrations manually deleted because of interference or a bad baseline.
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 2.
Peak intensity: 0.021 Jy Lower 20% velocity: 5440.7 km/s Upper 20% velocity: 6091.8 km/s Systemic velocity: 5766.3 km/s Line width (20%): 651.2 km/s Profile integral: 11.48 Jy * km/s A: 14.15 B: 12.12 Ratio B/A: 0.856 Flux integral velocity range: 5382.4 - 6170.4 km/s
several profiles in spectrum, only central one measured.