Object: LVM231. On scan num: 166 168 170 172 174 176 Off scan num: 167 169 171 173 175 177 R.A.: 8.157577 hrs Dec.: 43.934706 deg On azimuth: 66.648482 deg On zenith dist.: 23.787151 deg Off azimuth: 66.652569 deg Off zenith dist.: 23.817192 deg MJD: 52288 UTC: 0.158611 Center freq.: 1388.511538 MHz Doppler: 0.00000238 Num. correlators: 2 Spectrom. atten.: 33 40 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1740 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. Narrow band interference was removed from 5 channels by interpolation between the nearest valid channels
Peak intensity: 0.015 Jy Lower 20% velocity: 6690.5 km/s Upper 20% velocity: 7055.7 km/s Systemic velocity: 6873.1 km/s Line width (20%): 365.2 km/s Profile integral: 3.49 Jy * km/s A: 2.90 B: 3.19 Ratio B/A: 1.100 Flux integral velocity range: 6675.7 - 7070.4 km/s