Spectral Observations of Subfuors (Exors). II. V1143 Ori

Astronomy and Astrophysics – Astrophysics

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Stars, Flare: Individual, V1143 Ori, Stars - Flare - Individual - V1143 Ori

Scientific paper

Spectral observations of the subfuor (exor) V 1143 Ori during the outburst of 1992-93 are reported. Data on the behavior of the Ca II infrared triplet before and during the outburst are presented for the first time. The amplitudes of the outbursts during 1982-94 show that their maxima do not vary greatly on the average. Between outbursts, when the star is in the minimum of its active period, the spectrum of V 1143 Ori is typical of a WTTS and during an outburst, of a CTTS.

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