Object: N2713 On scan num: 754 756 758 760 762 764 766 768 770 772 Off scan num: 755 757 759 761 763 765 767 769 771 773 R.A.: 8.955691 hrs Dec.: 2.921159 deg On azimuth: 101.757266 deg On zenith dist.: 70.937187 deg Off azimuth: 101.726150 deg Off zenith dist.: 70.973115 deg MJD: 52775 UTC: 0.754306 Center freq.: 1401.932864 MHz Doppler: -0.00009316 Num. correlators: 2 Spectrom. atten.: 0 0 dB Bandwidth: 12.5 MHz Num. channels: 8192 Eff. integration: 2970 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 2 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: 0.032 Jy Lower 20% velocity: 3601.6 km/s Upper 20% velocity: 4241.0 km/s Systemic velocity: 3921.3 km/s Line width (20%): 639.4 km/s Profile integral: 10.73 Jy * km/s A: 9.87 B: 11.58 Ratio B/A: 1.174 Flux integral velocity range: 3548.6 - 4272.9 km/s