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Pulkovo compilation of radial velocities for 35495 stars in a common system.
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| Monitoring MWC 560 = V694 Monocerotis in 1990-1995. I. Conventional and high-speed UBV photometry.
We present results of an extensive photometric monitoring campaign ofthe peculiar emission star MWC 560 that covers the range 1990-1995. Thetime interval corresponds to the length of the proposed orbital periodof this highly peculiar binary, which attracted considerable interest inJanuary-April 1990, when absorption components, shifted by -6000km/sfrom corresponding emission lines, were observed. Here we presentphotometric data secured during: 113 nights of conventional UBVphotoelectric photometry, 45 nights of high speed UBV photoelectricphotometry to study the flickering activity, and 682 visual photometricestimates. MWC 560 has experienced a decrease in magnitude since thebright (V=9.2mag) phase in 1990. After the minimum reached in May 1994(V=10.7mag), the star is currently increasing slowly in brightness. Thedecrease has been accompanied in all bands by large fluctuationssuperimposed on the mean trend. The B-V colour has shown a steadyincrease by 0.0.33mag/yr. U-B has remained stable at -0.07mag since late1990. In all the observing nights devoted to high speed photometry weobserved flickering activity in MWC 560. The data show that theflickering amplitude {DELTA}U increases with the decrease of the Umagnitude. Quasi-periodic variations have always been detected. A periodof ~70min has been observed in ~13 nights which is close to the ~60minquasi-period reported by Michalitsianos et al. (1993). However, nocoherent variability is traceable throughout the whole set of flickeringdata.
| Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue.
We give a common version of the two catalogues of Mean Radial Velocitiesby Wilson (1963) and Evans (1978) to which we have added the catalogueof spectroscopic binary systems (Batten et al. 1989). For each star,when possible, we give: 1) an acronym to enter SIMBAD (Set ofIdentifications Measurements and Bibliography for Astronomical Data) ofthe CDS (Centre de Donnees Astronomiques de Strasbourg). 2) the numberHIC of the HIPPARCOS catalogue (Turon 1992). 3) the CCDM number(Catalogue des Composantes des etoiles Doubles et Multiples) byDommanget & Nys (1994). For the cluster stars, a precise study hasbeen done, on the identificator numbers. Numerous remarks point out theproblems we have had to deal with.
| Radial velocities and three-colour photometry of 166 southern stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1965MNRAS.131...95P&db_key=AST
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Osservazione e dati astrometrici
| Costellazione: | Unicorno |
| Ascensione retta: | 07h32m59.08s |
| Declinazione: | -06°51'58.2" |
| Magnitudine apparente: | 7.285 |
| Distanza: | 284.9 parsec |
| Moto proprio RA: | -7.4 |
| Moto proprio Dec: | -65.6 |
| B-T magnitude: | 8.71 |
| V-T magnitude: | 7.403 |
Cataloghi e designazioni:
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