Object: LVM660. On scan num: 115 117 119 121 123 125 Off scan num: 116 118 120 122 124 126 R.A.: 15.067457 hrs Dec.: 77.634291 deg On azimuth: 346.214520 deg On zenith dist.: 56.820594 deg Off azimuth: 346.205112 deg Off zenith dist.: 56.806549 deg MJD: 52421 UTC: 0.477546 Center freq.: 1410.319174 MHz Doppler: -0.00002358 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: 0.068 Jy Lower 20% velocity: 2062.7 km/s Upper 20% velocity: 2214.0 km/s Systemic velocity: 2138.4 km/s Line width (20%): 151.3 km/s Profile integral: 8.02 Jy * km/s A: 7.26 B: 7.97 Ratio B/A: 1.098 Flux integral velocity range: 2047.2 - 2233.3 km/s