| Issue |
A&A
Volume 370, Number 2, May I 2001
|
|
|---|---|---|
| Page(s) | 503 - 506 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:20010256 | |
| Published online | 15 May 2001 | |
Symbiotic stars on Asiago archive plates*
1
Osservatorio Astronomico di Padova, Sede di Asiago, 36012 Asiago (VI), Italy
2
Physics Department, University of Rijeka, Omladinska 14, HR-51000 Rijeka, Croatia
Corresponding author: U. Munari, munari@astras.pd.astro.it
Received:
6
February
2001
Accepted:
14
February
2001
The rich plate archive of the Asiago observatory has been searched for
plates containing the symbiotic stars AS 323, Ap 3-1, CM Aql, V1413 Aql (=
AS 338), V443 Her, V627 Cas (= AS 501) and V919 Sgr. The program objects
were found on 602 plates, where their brightness has been estimated
against the 
photometric sequences calibrated by
Henden & Munari (2000).
AS 323 is probably eclipsing, with a preliminary 
day period. If
confirmed, it would be the shortest orbital period known among symbiotic
stars. CM Aql does not seem to undergo a series of outbursts, its lightcurve
being instead modulated by a large amplitude sinusoidal variation with a
day period. V627 Cas presents a secular trend, in agreement with
the possible post-AGB nature of its cool component.
Key words: binaries: symbiotic
© ESO, 2001
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