Abstract
We present our photometric observations of an early B supergiant with an infrared excess, the protoplanetary object LSIV-12°111, and the previously suspected variable star NSV 24971. We confirm its photometric variability. During two observing seasons (2000–2001), the star exhibited rapid irregular light variations with amplitudes \(\Delta V \sim 0\mathop .\limits^m 3\), \(\Delta B \sim 0\mathop .\limits^m 3\), and \(\Delta U \sim 0\mathop .\limits^m 4\) and a time scale of ∼1d. There is no correlation between the colors and magnitudes of the star. The variability patterns of LSIV-12°111 and two other hot post-AGB stars, V886 Her and V1853 Cyg, are shown to be similar.
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Translated from Pis’ma v Astronomicheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Zhurnal, Vol. 28, No. 4, 2002, pp. 298–301.
Original Russian Text Copyright © 2002 by Arkhipova, Ikonnikova, Noskova, Komissarova.
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Arkhipova, V.P., Ikonnikova, N.P., Noskova, R.I. et al. Photometric variability of the protoplanetary nebula LSIV-12°111. Astron. Lett. 28, 257–260 (2002). https://doi.org/10.1134/1.1467261
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DOI: https://doi.org/10.1134/1.1467261