Object: 127-082 On scan num: 2346 2348 2350 2352 Off scan num: 2347 2349 2351 2353 R.A.: 11.866737 hrs Dec.: 21.109958 deg On azimuth: 178.574344 deg On zenith dist.: 17.282125 deg Off azimuth: 178.626314 deg Off zenith dist.: 17.281792 deg MJD: 52254 UTC: 0.490382 Center freq.: 1389.683278 MHz Doppler: 0.00009566 Num. correlators: 2 Spectrom. atten.: 33 39 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1080 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 3 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. Narrow band interference was removed from 2 channels by interpolation between the nearest valid channels
Peak intensity: 0.009 Jy Lower 20% velocity: 6531.7 km/s Upper 20% velocity: 6760.3 km/s Systemic velocity: 6646.0 km/s Line width (20%): 228.6 km/s Profile integral: 1.60 Jy * km/s A: 1.44 B: 1.95 Ratio B/A: 1.353 Flux integral velocity range: 6503.6 - 6764.1 km/s
very low SNR, profile edges hard to judge