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Sottometti un nuovo articolo| Pulkovo compilation of radial velocities for 35495 stars in a common system. Not Available
 
 
 |  | Intermediate-Brightness Spectrophotometric Standards. Standards Near +40° Declination The second stage in our program to compile a list of regionalintermediate-brightness spectrophotometric standards has been completed.We have obtained spectral energy distributions for 24 stars withmagnitudes near +40° declination. The range λλ31007600 Å was studied with a spectral resolution of 50 Å. Therelative rms error of our results in the visible is 1 2%, increasing to3 5% toward the edges of the studied wavelength interval. All the starsare referenced to a single standard, the circumpolar star HD 221525. Theenergy distributions were used to compute color indices in the UBV,WBVR, and UPXY ZV S systems, as well as in the system of the TYCHOcatalog. The computed and observed values for stars in common with theTYCHO catalog are compared.
 
 
 |  | Radial velocities. Measurements of 2800 B2-F5 stars for HIPPARCOS Radial velocities have been determined for a sample of 2930 B2-F5 stars,95% observed by the Hipparcos satellite in the north hemisphere and 80%without reliable radial velocity up to now. Observations were obtainedat the Observatoire de Haute Provence with a dispersion of 80Ä,mm(-1) with the aim of studying stellar and galactic dynamics.Radial velocities have been measured by correlation with templates ofthe same spectral class. The mean obtained precision is 3.0 km s(-1)with three observations. A new MK spectral classification is estimatedfor all stars. Based on observations made at the Haute ProvenceObservatory, France and on data from The Hipparcos Catalogue, ESA.Tables 4, 5 and 6 are only available in electronic form at the CDS viaanonymous ftp to cdsarc.u-strasbg.fr or viahttp://cdsweb.u-strasbg.fr/Abstract.htm
 
 
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 Osservazione e dati astrometrici
| Costellazione: | Lira |  | Ascensione retta: | 18h41m33.25s |  | Declinazione: | +41°23'21.0" |  | Magnitudine apparente: | 8.419 |  | Distanza: | 348.432 parsec |  | Moto proprio RA: | 14.2 |  | Moto proprio Dec: | -18.6 |  | B-T magnitude: | 8.537 |  | V-T magnitude: | 8.429 |  Cataloghi e designazioni:
 
 
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