Short Period Pulsators (SPP)

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Information on the Observation and analysis of short period pulsators such as Cepheids and RR Lyrae.

32 143 By SHA 11 months 3 weeks ago

Help Identifying Variable Type

Affiliation
American Association of Variable Star Observers (AAVSO)
clkotnik Sat, 06/27/2020 - 16:46

I am new to SPP and would appreciate help identifying a variable type.

HIP105217 is an 8.7 mag A9V star with the attached light curve.  The amplitude of variation (half full range) is 0.022 mag TESS.  A DCDFT analysis with VStar indicates two very dominate periods - 0.6150 and 0.5746 days.  With a bit of analysis (not shown) it seems to me that the light curve is very consistent with two sinusoidal waves with these periods alternately reinforcing and damping each other.

Welcome to the short period pulsators section

Affiliation
American Association of Variable Star Observers (AAVSO)
doctor13 Wed, 02/26/2020 - 19:08

This is just a welcome to those interested in exploring the nature of short period pulsating variable stars.  Historically this has primarily been Cepheids and RR Lyr.  Since my research interest is delta Scuti I hope to add a lot more targets of this type.  I also plan to add gamma Doradus, roAp stars, and perhaps information on white dwarf objects.  Some of these might be very challenging target. Finally, there is a chance to explore a potential new class of pulsating variable stars from their Fourier parameters.