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Objective-prism discoveries in the northern sky - II.
Five tables list the observed characteristics of 244 northern hemispherestars recorded in 100 108 A/mm dispersion plates at H-gamma wavelengths.The 5 x 5 deg fields contained a number of suspected weak-metal objects.Listings are divided into peculiar A stars, metallic line and deltaDelphini stars, high luminosity objects, Ca II emission stars of the Gand K type, and composite spectra.
| New UBVRI photometry for 900 supergiants
A description is presented of the results obtained in connection with asystematic program of supergiant photometry on the Johnson UBVRI system.During the eight years after the start of the program, almost 1000 starshave been observed, about 400 three or more times each. The originalselection of stars used the spectral type catalog of Jaschek et al.(1964) to choose supergiants. Since observations were possible from bothChile and Canada, no declination limits were imposed, and no particularselection criteria were imposed other than to eliminate carbon stars.These are so red as to require enormous extrapolations of thetransformation equations.
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Membro dei seguenti gruppi:
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Osservazione e dati astrometrici
| Costellazione: | Ercole |
| Ascensione retta: | 17h42m59.58s |
| Declinazione: | +30°21'24.5" |
| Magnitudine apparente: | 8.489 |
| Distanza: | 169.492 parsec |
| Moto proprio RA: | -7.5 |
| Moto proprio Dec: | -0.6 |
| B-T magnitude: | 8.825 |
| V-T magnitude: | 8.517 |
Cataloghi e designazioni:
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