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Spectrophotometric study of the suspected UU Herculis-star HR 4912
High-dispersion blue spectrograms and BV photometry of the high-latitudeF-supergiant HR 4912 = HD 112374 have been obtained. As a result of thecurve-of-growth analysis, it is concluded that it might have theparameters of a F-supergiant with slight metal deficiency (Fe/H = -0.07). The latter depends much upon the derived temperature of HR 4912;hence, special attention is paid to this problem. The blue spectra andnew BV photometry made it possible to obtain four independent estimatesof the temperature - better than in the previous two studies of HR 4912in the UV and red regions. Despite all recent efforts in a wide spectralregion, the status and origin of HR 4912 remains as yet not established,although it seems to stand much closer to the stars of the UU Herculistype.
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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Baliklar |
| Sað Açýklýk: | 01h51m01.02s |
| Yükselim: | +04°13'14.0" |
| Görünürdeki Parlaklýk: | 8.366 |
| Uzaklýk: | 67.476 parsek |
| özdevim Sað Açýklýk: | 66.4 |
| özdevim Yükselim: | -50 |
| B-T magnitude: | 9.005 |
| V-T magnitude: | 8.419 |
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