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Contemporaneous photometry and radial velocities of RR Lyrae stars
Contemporaneous BVRI photometry and radial velocities of seven RR Lyraevariables covering nearly the full span in Delta S and including the RRcstar T Sex are reported. Over 3000 BVRI measures at 100 s timeresolution and over 400 radial velocity measures are included. Thephotometric uncertainties are of order + or - 0.007 mag in V, (B - V)and (V - R) and + or - 0.014 in (R - I). The radial velocityuncertainties range from + or - 3.8 to + or - 8.0 km/s, correlated withthe metal deficiency. Light, color, and velocity curves are given.
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Osservazione e dati astrometrici
| Costellazione: | Delfino |
| Ascensione retta: | 20h50m48.02s |
| Declinazione: | +12°34'22.3" |
| Magnitudine apparente: | 8.191 |
| Moto proprio RA: | -4.4 |
| Moto proprio Dec: | -23.9 |
| B-T magnitude: | 8.617 |
| V-T magnitude: | 8.227 |
Cataloghi e designazioni:
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