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Date: Fri, 29 Oct 1993 22:03:11 +0200
From: granslo@argo.uio.no
Subject: V1413 Aquilae
***** V1413 AQUILAE - A SYMBIOTIC VARIABLE STAR *****
V1413 Aquilae (AS 338) is an eclipsing symbiotic system located at R.A. =
19h 03m 46.8s, Decl. = +16d 26' 19" (2000.0). According to a report by
U. Munari and B. F. Yudin in IAU Circular No. 5884 (1993 October 28) it has
entered an outburst phase and its magnitude has increased from V = 13.0 in
1990 to 11.2 on 1993 October 27.85 UT. The colour index has decreased from
B-V = +1.00 to +0.65 during the same time interval.
Recent spectroscopy from Asiago Observatory shows that the emission lines
from He I, He II and [O III] has disappeared since 1993 June and only faint
Balmer lines remain visible. A spectroscopic study by L. Kohoutek in 1965
(Bull. Astr. Inst. Czech., 16, 189) showed lines from He I, He II, [Fe VII],
TiO, and H2O.
V1413 Aql has been on a smooth decline since its eruption in 1982 (Munari
et al., 1992: Astron. Astrophys. Suppl. Ser., 93, 383).
This system received a formal va"The 71st Name-List of
Variable Stars" (Kazarovetz, E. V. et al., 1993: Inf. object has been observed by members of Variable Star Observers League
o MAGN OBSERVER
1993 05 28.748 <13.0 Yamada, M. 1993 10 01.555 12.93 10 08.505 12.6 Kato, T.
1993 08 28.444 12.5 Kato, T. 1993 1Kato, T. 1993 10 11.417 12.6 Kato, T.
1993 09 25.442 12.5 Kato, 547 12.2 Moriyama, M. 1993 10 26.401 12.6 Kato, T.
1993 09 28.474 13s in Universal Time.
Observers are encouraged to perform photometric and spanybody have a sequence for V1413 Aquilae?
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