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Spectroscopic observations of parsamian 21

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Abstract

This work presents spectroscopic observations of Parsamian 21, which has been shown recently by Staude and Neckel to be a fuor-type star. A list of identified absorption lines is given. The results are compared with previous spectroscopic observations over the period 1966–1990. It is shown that the Hσ line profile changed during this period; according to the observations of 1986, the center of the Hσ absorption line was shifted by −140 km/sec from λ0 and reached −600 km/sec at the line edge. It follows from the presented lightcurve that the star has undergone brightness variations of nearly three magnitudes and most likely became a fuor before 1902.

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Authors and Affiliations

  1. Byurakan Astrophysical Observatory, Armenia

    É. S. Parsamian, K. G. Gasparian & G. B. Ohanian

Authors
  1. É. S. Parsamian
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  2. K. G. Gasparian
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  3. G. B. Ohanian
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Translated fromAstrofizika, Vol. 39, No. 2, pp. 227–235, April–June, 1996.

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Parsamian, É.S., Gasparian, K.G. & Ohanian, G.B. Spectroscopic observations of parsamian 21. Astrophysics 39, 121–125 (1996). https://doi.org/10.1007/BF02044795

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  • DOI: https://doi.org/10.1007/BF02044795

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