[vsnet-alert 8913] Possible activity of southern symbiotic stars

[Berto Monard]

not strictly CVs, it can be argued....

The following are observations of symbiotic (Z And) stars dating at UT 20060401.0. They are made at CBA Pretoria (Bronberg Observatory) with a V filtered CCD. The given magnitudes are compared to those from observations made in 2004-2005 at CBA Pretoria and from published data at much earlier times in the form (.../...). Some of those earlier magnitudes refer to bright states of those stars, possibly observed during their discovery as Z And stars. Not much is known about most of the listed symbiotic stars.

* indicates a likely outbursting stage (speculative, a subjective assessment of the reporting observer...)

AE Ara   11.43   (12.7/12.5)   *   
V366 Car   12.78   (13.6/13.0)   *
V417 Cen   11.06   (11.5/12.2)   *   ongoing since about 2 years (AAVSO observations by A Jones)
Hen2-176   15.8   (17.0/15.0)   *
LMC N67   15.3   (16.0/15.9)   *
V347 Nor   15.6   (16.2/16.6)
V343 Ser/AS 289   11.95   (12.7/12.1)
V919 Sgr   12.0   (13.2/12.2)   possibly a bright SR maximum, not an outburst
SS73 96   13.5   (15.0/15.2)   *   
Th 3-7   15.9   (17.0/14.0)   
Ve 2-57   15.3   (16.2/12.5)   

Note that the reported observations are taken from a list of nearly 200 stars that are regularly observed at CBA Pretoria. Except for systems with a Mira or SR type donor star or those that undergo eclipses, the observed magnitudes changed very little over a period of two years. This has been the case with those reported above in the period 2004-2005. 


Berto Monard
Bronberg Observatory / CBA Pretoria







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