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A photometric and spectroscopic study of V567 Ophiuchi
New uvby-beta photometric observations of the dwarf Cepheid V567 Oph arepresented. An improved period is found. Large errors in the calculatedtimes of maximum light, variations in the light amplitude, variations inthe light-curve width, and differences in the radial-velocity amplitudesuggest that the object has a secondary overtone mode of pulsation. Thestar is found to be heavily reddened. Data indicate that the absolutemagnitude is M(V) = +1.1m + or - 0.1m, the distance is 620 + or - 30 pc,and the mass is 1.85 + or - 0.2 solar masses.
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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Yilanci |
| Sað Açýklýk: | 17h58m25.08s |
| Yükselim: | +00°54'09.2" |
| Görünürdeki Parlaklýk: | 9.69 |
| özdevim Sað Açýklýk: | 4.9 |
| özdevim Yükselim: | -33.5 |
| B-T magnitude: | 10.507 |
| V-T magnitude: | 9.758 |
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