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New Variable Hot Subdwarf Stars Identified from Anomalous Gaia Flux Errors, Observed by TESS, and Classified via Fourier Diagnostics
Brad N. Barlow, Kyle A. Corcoran, Isabelle M. Parker +7
Hot subdwarf stars are mostly stripped red giants that can exhibit photometric variations due to stellar pulsations, eclipses, the reflection effect, ellipsoidal modulation, and Do…
Discovery of periodic variables in the hot subdwarf catalogue through a systematic search in Zwicky Transient Facility data
Kevin Wang, Thomas Kupfer, Brad N. Barlow
We conduct a systematic search for periodic variables in the hot subdwarf catalogue using data from the Zwicky Transient Facility. We present the classification of 67 HW Vir binari…
Hen 3-860: New southern eclipsing symbiotic star observed in the outburst
J. Merc, R. Gális, M. Wolf +3
Brightening of Hen 3-860, previously classified as an H emitter, was detected by the ASAS-SN survey at the end of the year 2016. We have obtained the first spectroscopic observa…
The binary central star of the bipolar pre-planetary nebula IRAS 08005-2356 (V510 Pup)
Rajeev Manick, Brent Miszalski, Devika Kamath +5
Current models predict that binary interactions are a major ingredient for the formation of bipolar planetary nebulae (PNe) and pre-planetary nebulae (PPNe). Despite years of radia…
A hot subdwarf-white dwarf super-Chandrasekhar candidate supernova Ia progenitor
Ingrid Pelisoli, P. Neunteufel, S. Geier +8
Supernova Ia are bright explosive events that can be used to estimate cosmological distances, allowing us to study the expansion of the Universe. They are understood to result from…
Eclipsing Binaries Found by the EREBOS Project: Gaia DR2 6097540197980557440 -- A Deeply Eclipsing sdB+dM System
Kyle A. Corcoran, Brad N. Barlow, Veronika Schaffenroth +3
We present time-series spectroscopy and photometry of Gaia DR2 6097540197980557440, a new deeply-eclipsing hot subdwarf B (sdB) + M dwarf (dM) binary. We discovered this object dur…