VSX J003909.7+611233: a new Slowly Pulsating B star (SPB) in Cassiopeia?
David Boyd, Christopher Lloyd, Pierre dePonthiere, Mack Julian, Robert, Koff, Tom Krajci, Jeremy Shears, Bart Staels
TL;DR
This paper reports the discovery of a new Slowly Pulsating B star in Cassiopeia, identified through photometric analysis showing characteristic pulsation periods and amplitudes, contributing to stellar variability studies.
Contribution
The study presents the identification and characterization of a new SPB star, expanding the catalog of known pulsating B-type stars and providing detailed photometric analysis.
Findings
Detected a 0.43815-day pulsation period.
Observed low-amplitude sinusoidal light variation.
Estimated spectral type around B or A with significant extinction.
Abstract
We report the discovery of a new 13th magnitude variable in Cassiopeia close to the variable KP Cas. Analysis of 6 days of intensive photometry shows a regular, near sinusoidal modulation with an amplitude of 0.024 magnitudes and a period of 0.43815(31) d. Although its colour indicates a spectral type around F0 the star probably suffers up to 2 - 2.5 magnitudes of extinction so could be an A- or B-type star. Given the period, the low amplitude, the shape of the light curve and the probable spectral type we consider it most likely to be a slowly pulsating B-type (SPB) star. The variable has been registered in the International Variable Star Index with the identifier VSX J003909.7+611233.
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Taxonomy
TopicsAstronomical Observations and Instrumentation · Stellar, planetary, and galactic studies · Astrophysics and Star Formation Studies