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The determination of the zero point of the wavelength scale on stellar spectrograms
A novel method for determining the zero point of the wavelength scale(lambda0) on low-spectral-resolution spectrograms obtainedwith an objective plasma is presented. The method was applied to a groupof 100 stars belonging to the B-G spectral classes. Near-UV spectrogramsof these stars were obtained by the Orion-2 space observatory.Equivalent widths were obtained for the resonance doublet of Mg II 2800A in the spectra of the stars studied.
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Observation and Astrometry data
| Constellation: | ぎょしゃ座 |
| Right ascension: | 05h07m22.21s |
| Declination: | +46°28'41.3" |
| Apparent magnitude: | 8.937 |
| Distance: | 263.852 parsecs |
| Proper motion RA: | 4.6 |
| Proper motion Dec: | -11.5 |
| B-T magnitude: | 9.225 |
| V-T magnitude: | 8.961 |
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