Table 1
Known Galactic RCB stars: ASAS-3 id and variability as observed in the ASAS-3 survey between December 2000 and October 2009.
| Name | ASAS-3 id | Number of | Maximum amplitude (mag) | Maximum | Spectrum | ||
| declines | ASAS-3 | ACVS1.1 | brightness | date | |||
| observed | (2000−2009) | (Vamp) | Vmax (mag) | SSO/WiFeS | SAAO/Reticon | ||
|
|
|||||||
| Galactic | |||||||
|
|
|||||||
| SU Tau | J054904+1904.3 | 3 | 4.5 | _ | 9.8 | ||
| UX Ant | J105709-3723.9 | 3 | 2.8 | _ | 12.0 | 13-12-2010 | 09-02-1989 |
| UW Cen | J124317-5431.7 | 2 | 4.2 | _ | 9.3 | 30-07-1991 | |
| Y Mus | J130548-6530.8 | none | _ | _ | 10.25 | 17-07-2010 | 16-06-1990 |
| DY Cen | J132534-5414.7 | none | _ | _ | 13.2 | 17-07-2010 | |
| V854 Cen | J143450-3933.5 | 9 | 3.9 | 3.91 | 7.0 | 23-07-2011 | 18-06-1990 |
| S Aps | J150924-7203.8 | 3 | 4.5 | 4.61 | 9.7 | 17-07-2010 | 04-08-1989 |
| R CrB | J154834+2809.4 | 1 | 7.1 | 7.51 | 5.8 | ||
| RT Nor | J162419-5920.6 | 1 | 2.0 | 0.19 | 10.1 | 23-07-2011 | 17-05-1990 |
| RZ Nor | J163242-5315.6 | 4 | 3.2 | 0.63 | 10.3 | a | 04-08-1991 |
| V517 Oph | J171520-2905.6 | 8 | 3.0 | 1.30 | 11.4 | 23-07-2011 | 29-06-1989 |
| V2552 Oph | J172315-2252.0 | 3 | 3.1 | 2.23 | 10.9 | 17-07-2010 | |
| 23-07-2011 | |||||||
| V532 Oph | J173243-2151.6 | 3 | 3.0 | _ | 11.8 | ||
| OGLE-GC-RCB-2 | J175357-2931.7 | 1 | 0.7 | 0.83 | 12.6 | b | |
| EROS2-CG-RCB-3 | J175829-3051.3 | none | _ | _ | 14.0 | c | |
| V1783 Sgr | J180450-3243.2 | 1 | 3.3 | 2.61 | 10.7 | 16-07-2010 | 31-08-1994 |
| WX CrA | J180850-3719.7 | 2 | 3.5 | 1.94 | 10.5 | 17-07-2010 | 17-08-1993 |
| V739 Sgr | J181311-3016.2 | none | _ | _ | 12.9 | 16-07-2010 | 13-06-1990 |
| V3795 Sgr | J181325-2546.9 | 1 | 1.2 | 1.20 | 11.0 | 16-07-2010 | 10-06-1994 |
| VZ Sgr | J181509-2942.5 | 2 | 4.3 | 1.12 | 10.3 | 17-07-2010 | 10-06-1994 |
| RS Tel | J181851-4632.9 | 4 | 3.4 | 0.22 | 9.85 | 16-07-2010 | 10-06-1994 |
| GU Sgr | J182416-2415.4 | 2 | 4.2 | _ | 10.4 | 23-07-2011 | 11-06-1994 |
| V348 Sgr | J184020-2254.5 | 6 | 3.0 | _ | 12.2 | 15-07-2010 | |
| MV Sgr | J184432-2057.2 | none | _ | _ | 13.5 | 15-07-2010 | |
| FH Sct | J184515-0925.5 | 3 | 2.0 | 1.02 | 12.5 | 24-07-2011 | 29-06-1989 |
| V CrA | J184732-3809.6 | 1 | 2.8 | 0.54 | 9.7 | 23-07-2011 | 11-06-1994 |
| SV Sge | J190812+1737.7 | 2 | 2.3 | 2.62 | 10.5 | 24-07-2011 | |
| V1157 Sgr | J191012-2029.7 | 9 | 2.8 | 2.17 | 11.5 | 15-07-2010 | 30-08-1994 |
| 24-07-2012 | |||||||
| RY Sgr | J191633-3331.3 | 2 | 6.0 | _ | 6.3 | 15-07-2010 | 17-06-1990 |
| ES Aql | J193222-0011.5 | 10 | 3.2 | 2.05 | 11.65 | 24-07-2011 | |
| U Aqr | J220320-1637.6 | 2 | 3.8 | 2.41 | 11.2 | 15-07-2010 | 16-06-1990 |
Notes. DY Per, XX Cam, Z UMI, NSV 11154, V482 Cyg and UV Cas are outside the sky area monitored by the ASAS-3 south survey. The 17 following known Galactic RCBs are too faint to have been catalogued and monitored by the ASAS-3 south survey: MACHO-135.27132.51, −301.45783.9, −308.38099.66 and −401.48170.2237 from Zaniewski et al. (2005), EROS2-CG-RCB-1 and −4 to −14 from Tisserand et al. (2008) and OGLE-GC-RCB-1 from Tisserand et al. (2011).
RZ Nor was in a decline phase during our observation. It is worth mentioning that there exists a nearby.
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