Abstract
We have obtained high-dispersion blue spectograms and BV photometry of the high-latitude F-supergiant HR 4912=HD 112374. As a result of our curve-of-growth analysis we conclude that it appears to have the parameters of a F-supergiant with slight metal deficiency ([Fe/H]=−0.7). The latter depends much upon the derived temperature of HR 4912, hence we pay special attention to this problem. Our blue spectra and new BV photometry made it possible to obtain four independent estimates of the temperature-better than in the previous two studies of HR 4912 in the UV and red regions.
Despite all recent efforts in a wide spectral region 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 Herculis type.
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References
Arellano Ferro, A.: 1981,Publ. Astron. Soc. Pacific 93, 351.
Arellano Ferro, A.: 1984,Publ. Astron. Soc. Pacific 96, 641.
Bode, G.: 1965,Die Kontinuerliche Absorption von Sternatmosphären, Inst. f. Theor. Phys. und Sternwarte, Kiel, p. 151.
Boyarchuk, A. and Boyarchuk, M.: 1981,Rep. Crinea Astron. Obs. 63, 66.
Böhm-Vitense, E. and Proffitt, C.: 1984,Publ. Astron. Soc. Pacific 96, 897.
Burstein, D. and Heiles, C.: 1982,Astron. J. 87, 1165.
Clegg, R., Lambert, D., and Tomkin, J.: 1981,Astrophys. J. 250, 262.
Corben, P. M.: 1966,Monthly Notices Astron. Soc. South Africa 25, 44.
Dobrichev, V.: 1970,Rep. Dept. Astron. Bulgarian Acad. Sci. 4, 47.
Dyson, J. and Hartquist, T.: 1983,Monthly Notices Roy. Astron. Soc. 203, 1233.
Greenstein, J. L.: 1970, in G. Herbig (ed.),Spectroscopic Astrophysics, University of California Press, p. 61.
Hoffleit, D. and Jaschek, C.: 1982,Catalogue of Bright Stars, 4th ed., New Haven, Yale University Observatory.
Kurucz, R.: 1979,Astrophys. J. Suppl. 40, 1.
Luck, R. E. and Bond, H. E.: 1984,Astrophys. J. 279, 729.
Luck, R. E. and Lambert, D.: 1981,Astrophys. J. 245, 1018.
Luck, R. E., Lambert, D., and Bond, H. E.: 1983,Publ. Astron. Soc. Pacific 95, 413.
Moore, Ch.: 1959,NBS Techn. Note, No. 36, Washington.
Nicolet, B.: 1978,Astron. Astrophys. Suppl. 34, 1.
North, P. and Hauck, B.: 1979, in A. G. Davis Philip (ed.),Problems of Calibration of Multicolor Photometric Systems, Dudley Obs. Reports, No. 14, Schenectady.
Rufener, F.: 1980,Third Catalogue of Stars Measured in the Geneva Obs. Photometric System, Observ. de Genève, Sauverny.
Sasselov, D. D.: 1983,Inf. Bull. Var. Stars No. 2314.
Sasselov, D. D.: 1984,Astrophys. Space Sci,102, 161.
Schmidt-Kaler, Th.: 1982, inLandolt-Börnstein New Series, Subvol. VI/2b, Springer-Verlag, Berlin, p. 455.
Straižys, V.: 1982,Metal-Deficient Stars, Vilnius.
van Genderen, A.: 1982,Astron. Astrophys. 105, 250.
Wright, K. O., Lee, E. K., Jacobson, T. V., and Greenstein, J. L.: 1964,Publ. Dominion Astrophys. Obs., Victoria 12, No. 7, 173.
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Sasselov, D.D., Kolev, D.Z. Spectrophotometric study of the suspected UU Herculis-star HR 4912. Astrophys Space Sci 123, 363–374 (1986). https://doi.org/10.1007/BF00653955
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DOI: https://doi.org/10.1007/BF00653955