Let's observe RCB stars!

Doug Welch mentioned in the AAVSO Legacy Stars LPVS topic[1] that, "there are also newly discovered and confirmed R CrB stars that need to have sequences defined and monitoring started!"

I think this is a good idea, but quite offtopic on the Legacy LPVs topic, so it's time to start a new topic for RCB variables.

After some discussion with Doug I made sequence for two new RCB stars:

ASAS J190640-1623.9: listed as ASAS-RCB-8 in Clayton's paper[1]. This is a 10.89V star in maximum, and a 1.38 magnitude fading was observed by ASAS-3 around 2001-2002. T Sgr and R Sgr lie not far from this star, so LPV fans can easily include this star into their programme.

NSV 8353: This star can be found in Ophiuchus, at -21 degress, so especially southern observers can monitor NSV 8353. According to VSX the amplitude of this RCB variable is: 12.6 - <14.1V. The light curve of ASAS-3 show some fadings down to 14.1V. 

[1] http://www.aavso.org/aavso-legacy-stars-lpvs [1]
[2] What Are the R Coronae Borealis Stars? http://www.aavso.org/sites/default/files/jaavso/ej201.pdf

Clear skies,

Robert Fidrich (FRF)