New white dwarf pulsators for TESS : J/MNRAS/478/2676


Authors : Bognar Zs. orcid , Kalup Cs., Sodor A. (hide) , Kalup Cs., Sodor A. et..al

Bibcode : 2018MNRAS.478.2676B (ADS) (Simbad) (Objects) (hide)

CDS Keywords : Stars, variable; Stars, white dwarf; Photometry, CCD
UAT : Variable stars, White dwarf stars, CCD photometry

Observation (OC)

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Inserted into VizieR : 02-Aug-2018
Last modification : 18-Aug-2024

Searching for new white dwarf pulsators for TESS observations at Konkoly Observatory. (2018)

Keywords : techniques photometric - stars: individual: WD 1310+583, EGGR 120 - stars: interiors - stars: oscillations - white dwarfs

Abstract:We present the results of our survey searching for new white dwarf pulsators for observations by the TESS space telescope. We collected photometric time-series data on 14 white dwarf variable candidates at Konkoly Observatory, and found two new bright ZZ Ceti stars, namely EGGR 120 and WD 1310+583. We performed a Fourier analysis of the datasets. In the case of EGGR 120, which was observed on one night only, we found one significant frequency at 1332uHz with 2.3mmag amplitude. We successfully observed WD 1310+583 on eight nights, and determined 17 significant frequencies in the whole dataset. Seven of them seem to be independent pulsation modes between 634 and 2740uHz, and we performed preliminary asteroseismic investigations of the star ...(more)
Abstract: (hide)
We collected photometric time-series data on 14 white dwarf variable candidates at Konkoly Observatory, and found two new bright ZZ Ceti stars, namely EGGR 120 and WD 1310+583. We used the 1-m Ritchey-Chretien-Coude telescope at the Piszkesteto mountain station of Konkoly Observatory. We obtained data with an Andor iXon+888 EMCDD and an FLI Proline 16803 CCD camera in white light.
Zsofia Bognar, bognar(at)konkoly.hu

                
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