Object: N00721 On scan num: 244 246 248 250 252 254 Off scan num: 245 247 249 251 253 255 R.A.: 1.912665 hrs Dec.: 39.381959 deg On azimuth: 279.368152 deg On zenith dist.: 10.859680 deg Off azimuth: 279.369207 deg Off zenith dist.: 10.824025 deg MJD: 52512 UTC: 0.409444 Center freq.: 1394.500887 MHz Doppler: 0.00008157 Num. correlators: 2 Spectrom. atten.: 35 42 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1800 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 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 1.
Peak intensity: 0.027 Jy Lower 20% velocity: 5449.0 km/s Upper 20% velocity: 5748.4 km/s Systemic velocity: 5598.7 km/s Line width (20%): 299.4 km/s Profile integral: 4.70 Jy * km/s A: 4.02 B: 4.74 Ratio B/A: 1.178 Flux integral velocity range: 5422.6 - 5771.1 km/s