Affiliation
American Association of Variable Star Observers (AAVSO)
Tue, 08/06/2019 - 00:17
OBJECT | DATE(UT) | MAG | MAGERR| FILTER | COMMENT
MQ Cas | 20190805.94 | 11.89 | 0.02 | V | flash
MQ Cas flashed. In the AAVSO database there are no observations during the outbreak in the filter "V". If anyone wants can make observations.
To: Nikolay,
Here are some observations I took of MQ Cas per your suggestion:
I uploaded these 560 BVI standard (corrected) magnitude estimates into the AASVO database yesterday.
I also took some spectra of it from Mt. Pinos with my Alpy600 and LISA-IR spectroscopes:
some interesting absorption lines towards the blue end. Its a nice pulsating variable that looks like it has a semi-regular period of approximetly 25-60 or more days. I'll take more photometry until this passes my meridian at twilight; probably til' Jan2020.
James
MQ Cas isn't a pulsator, it's an UXOR. On your lightcurve you can see the characteristic lessening of B-V following minimal phases, produced by scattering off the circumstellar material.
Thanks. Interesting results.