Object: 127-049 On scan num: 73 75 77 79 81 83 85 87 89 91 Off scan num: 74 76 78 80 82 84 86 88 90 92 R.A.: 11.763553 hrs Dec.: 20.630203 deg On azimuth: 116.083844 deg On zenith dist.: 31.185999 deg Off azimuth: 116.053925 deg Off zenith dist.: 31.203587 deg MJD: 52250 UTC: 0.415463 Center freq.: 1387.854949 MHz Doppler: 0.00009661 Num. correlators: 2 Spectrom. atten.: 33 38 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 2640 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 11 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 6 channels by interpolation between the nearest valid channels
Peak intensity: 0.006 Jy Lower 20% velocity: 6925.2 km/s Upper 20% velocity: 7211.2 km/s Systemic velocity: 7068.2 km/s Line width (20%): 286.0 km/s Profile integral: 1.28 Jy * km/s A: 1.11 B: 1.31 Ratio B/A: 1.181 Flux integral velocity range: 6902.8 - 7246.1 km/s
low velocity wing clobbered by RFI, pretty ratty baseline