336 citations
- Uniwersytet Komisji Edukacji Narodowej w KrakowiePL18 papers
- Nordic Optical TelescopeES15 papers
- Nicolaus Copernicus Astronomical CenterPL13 papers
- University of ValparaísoCL12 papers
- Centre National de la Recherche ScientifiqueFR11 papers
- Embry–Riddle Aeronautical UniversityUS11 papers
- Institute of PhysicsPL10 papers
- KU LeuvenBE10 papers
- Osservatorio Astrofisico di TorinoIT9 papers
- Aarhus UniversityDK7 papers
- Czech Academy of Sciences, Astronomical InstituteCZ7 papers
- Pennsylvania State UniversityUS7 papers
7 papers · 2 filters
Evolutionary modelling of subdwarf B stars using MESA with the predictive mixing and convective premixing schemes
J. Ostrowski, A. Baran, S. Sanjayan +1
Results of evolutionary modelling of subdwarf B stars are presented. For the first time, we explore the core and near-core mixing in the subdwarf B stars using new algorithms avail…
Pulsating hydrogen-deficient white dwarfs and pre-white dwarfs observed with TESS: I. Asteroseismology of the GW Vir stars RX J2117+3412, HS 2324+3944, NGC 6905, NGC 1501, NGC 2371, and K 1-16
Alejandro H. Córsico, Murat Uzundag, S. O. Kepler +7
In this paper, we present a detailed asteroseismological analysis of six GW Vir stars including the observations collected by the TESS mission. We processed and analyzed TESS obser…
A search for variable subdwarf B stars in TESS Full Frame Images -- I. Variable objects in the southern ecliptic hemisphere
S. K. Sahoo, A. S. Baran, S. Sanjayan +1
We report the results of our search for pulsating subdwarf B stars in Full Frame Images, sampled at 30 min cadence and collected during Year 1 of the TESS mission. Year 1 covers mo…
EPIC 216747137: a new HW Vir eclipsing binary with a massive sdOB primary and a low-mass M-dwarf companion
R. Silvotti, V. Schaffenroth, U. Heber +8
EPIC 216747137 is a new HW~Virginis system discovered by the Kepler spacecraft during its K2 "second life". Like the other HW Vir systems, EPIC 216747137 is a post-common-envelope…
An Improved Spin-Down Rate for the Proposed White-Dwarf Pulsar AR Scorpii
Yadira Gaibor, Peter Garnavich, Colin Littlefield +2
We analyze rapid-cadence, multiwavelength photometry of AR Scorpii from three observatories, covering five observing seasons. We measure the arrival times of the system's beat puls…
The EXOTIME project: Signals in the diagrams of the rapidly pulsating subdwarfs DW Lyn, V1636 Ori, QQ Vir, and V541 Hya
F. Mackebrandt, S. Schuh, R. Silvotti +17
We aim to investigate variations in the arrival time of coherent stellar pulsations due to the light-travel time effect to test for the presence of sub-stellar companions. Those co…