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V669 Cep: A new binary system with a B[e] star
We present the results of optical and near-IR spectroscopic andbroadband multicolour photometric observations of the emission-lineobject V669 Cep. We find evidence that it contains a hot, lowluminosity, B4-B6 star and a cool companion (most likely late-typegiant). Significant variations of the H? line strength aredetected on a timescale of months. The emission-line spectrum and strongIR-excess indicate a large amount of circumstellar gas and dust in thesystem. The spectral energy distribution in the near-IR region and theabsence of late-type star features in the optical spectrum indicatesthat the cool star is heavily obscured by circumstellar dust, while thehot star is much less affected by reddening. The system is located at1-1.5 kpc from the Sun in the local spiral arm. We suggest that V669 Cepis an evolved and probably mass exchanging binary system, a member ofthe group of Be stars with warm dust.
| Meridian observations made with the Carlsberg Automatic Meridian Circle at Brorfelde (Copenhagen University Observatory) 1981-1982
The 7-inch transit circle instrument with which the present position andmagnitude catalog for 1577 stars with visual magnitudes greater than11.0 was obtained had been equipped with a photoelectric moving slitmicrometer and a minicomputer to control the entire observationalprocess. Positions are reduced relative to the FK4 system for each nightover the whole meridian rather than the usual narrow zones. Thepositions of the FK4 stars used in the least squares solution are alsogiven in the catalog.
| Photoelectric photometry of early-type stars in a Milky Way field in Cepheus
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970A&AS....2..251S&db_key=AST
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Besorolás csoportokba:
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Pozíciós és asztrometriai adatok
| Csillagkép: | Cefeusz |
| Rektaszcenzió: | 22h25m13.98s |
| Deklináció: | +60°50'10.7" |
| Vizuális fényesség: | 8.124 |
| Távolság: | 324.675 parszek |
| RA sajátmozgás: | 5.3 |
| Dec sajátmozgás: | -3.1 |
| B-T magnitude: | 8.21 |
| V-T magnitude: | 8.132 |
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