Abstract
We present the spectrum of the supernova 1985F over the wavelength range 4600 to 10000 Å as recorded in one 200 s exposure on 16 May, 1985, when its age was estimated to bet∼240 days. This wideband measurement with a resolution of 20 Å was made with the new Faint Object Spectrograph on the Isaac Newton Telescope (INT) at the Observatorio del Roque de los Muchachos. Broad line features were observed for the ionsOi,Oii, andOiii, Caii, and Nai although broad Hα was noteably absent. This suggests type I rather than type II properties but Filippenko and Sargent (1985c) have concluded this object to be of neither type and of a new peculiar class. We have observed the Caii infra-red triplet at λ8600 Å which has not been previously reported in the spectrum of SN1985F and alsoCi] at λ9800 Å.
Similar content being viewed by others
References
Baade, W. and Zwicky, F.: 1938,Astrophys. J. 88, 411.
Barbon, R., Ciatti, F., and Rosino, L.: 1973,Astron. Astrophys. 25, 241.
Barbon, R., Ciatti, F., and Rosino, L.: 1979,Astron. Astrophys. 72, 287.
Breare, J. M., Ellis, R. S., Purvis, A., and Parry, I. R.: 1985,FOS Manual, Department of Physics, University of Durham.
Falk, S. W. and Arnett, W. D.: 1977,Astrophys. J. Suppl. 33, 515.
Filippenko, A. V. and Sargent, W. L. W.: 1985a,IAU Colloq., No. 4042.
Filippenko, A. V. and Sargent, W. L. W.: 1985b,IAU Colloq., No. 4048.
Filippenko, A. V. and Sargent, W. L. W.: 1985c,Nature 316, 407.
Kirshner, R. P., Oke, J. B., Penston, M. V., and Searle, L.: 1973,Astrophys. J. 185, 303.
Parry, I. R.: 1986, Ph.D. Thesis, University of Durham, in preparation.
Trimble, V.: 1982,Rev. Mod. Phys. 59, 1205.
Truran, J. R., Sparks, W. M., and Starrfield, S.: 1981,Astrophys. J. 243 L27.
Wheeler, J. C.: 1978,Astrophys. J. 225 212.
Wynne, G. C.: 1982,Optica Acta 29, 1557.
Zwicky, F.: 1965, in L. H. Aller and D. B. McLaughlin (eds.),Stellar Structure, University of Chicago Press, Chicago, p. 367.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Pearce, G., Purvis, A. Observations of the supernova 1985F with a new spectrograph. Astrophys Space Sci 125, 175–180 (1986). https://doi.org/10.1007/BF00643982
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00643982