Object: N03884 On scan num: 37 39 41 43 45 Off scan num: 38 40 42 44 46 R.A.: 11.770085 hrs Dec.: 20.392135 deg On azimuth: 104.594310 deg On zenith dist.: 39.971174 deg Off azimuth: 104.562031 deg Off zenith dist.: 39.999628 deg MJD: 52249 UTC: 0.385845 Center freq.: 1388.375477 MHz Doppler: 0.00009675 Num. correlators: 2 Spectrom. atten.: 40 63 dB Bandwidth: 5.0 MHz Num. channels: 1024 Eff. integration: 720 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 25 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: 0.010 Jy Lower 20% velocity: 6701.5 km/s Upper 20% velocity: 7222.2 km/s Systemic velocity: 6961.9 km/s Line width (20%): 520.7 km/s Profile integral: 3.15 Jy * km/s A: 2.31 B: 0.00 Ratio B/A: 0.000 Flux integral velocity range: 6659.7 - 7259.5 km/s
very low SNR so edges are guesstimates