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uvby FCAPT photometry of the mCP stars HD 32633, θ Aur, 49 Cam, and 3 Hya
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| Spectral Classification of Stars in A Supplement to the Bright Star Catalogue
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Photometry from the Hipparcos catalogue is used to verify the constancyof four magnetic CP stars, as well as the comparison and the check starsused for variability studies of normal and chemically peculiar B and Astars with the Four College Automated Photoelectric Telescope;variability in these stars can produce spurious results. A few of thecomparison stars are found to be variable and should be replaced forfuture differential photometric studies.
| Stromgren UVBY Photometry of the Magnetic Chemically Peculiar Stars HR 1643, theta Aur, 49 Cam, and HR 3724
Differential Stromgren uvby photometric observations from the FourCollege Automated Photoelectric Telescope of four magnetic ChemicallyPeculiar stars are used to refine rotational periods and to define theshapes of the light curves. HR 1643 (P = 2.73475 d) shows large in phasevariability in all four magnitudes. Theta Aur (P = 3.6188 d) exhibitslarge amplitude variations with two components contributing to theminima. For 49 Cam (P = 4.28679 d), we probably are observing both polarregions and much of the surface. The values for HR 3724 (P = 33.984 d)confirm Wolff's result that the main variability is in v. (SECTION:Stars)
| 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 Observations of 53 Cam
Not Available
| Final catalogue of 229 photometric standards in UBV system near the selected areas 1-115
Not Available
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Not Available
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Membre dels grups següents:
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Dades d'Observació i Astrometria
| Constel·lació: | Camelopardalis |
| Ascensió Recta: | 07h50m07.83s |
| Declinació: | +60°20'31.6" |
| Magnitud Aparent: | 6.785 |
| Distancia: | 121.655 parsecs |
| Moviment propi RA: | -15.5 |
| Moviment propi Dec: | 13.7 |
| B-T magnitude: | 6.904 |
| V-T magnitude: | 6.795 |
Catàlegs i designacions:
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