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bCep / Be Star?




Well, one way to look for bCep / Be stars is to look for blue objects
with infrared excess/source.

Haven't dealt with the IRAS catalogue yet, but the MSX_5C catalogue gave
me one candidate with a moderately reasonable number of observations,
63.  Incidentally Welch-Stetson index turned out to be 1.9.  Object
36933 in collected.big.

NSV 17026 = HD 261810 a B5 V star of suspected 9.02 - 9.08 V range.

It's in open cluster NGC 2264, a bright cluster with nebulosity which
could cause problems.


There's two nights of data.  The attached graph has filled symbols for
one night, open symbols for the other, circles for TASS V magnitudes,
squares for TASS Ic magnitudes, errors quoted on V are +/- 0.004
magnitudes throughout and on Ic are either +/- 0.003 or 0.004.  Y axis
is magnitudes. X axis is decimal days from start of each data run.

Results ambiguous. This is kinda typical of what to expect for very low
amplitude suspect variables with the TASS CD 23 data.

GIF image