G. Handler

52 Eclipsing Quadruple Star Candidates Discovered in TESS Full Frame Images

Veselin B. Kostov, Brian P. Powell, S. Rappaport, T. Borkovits et autres

us, hu, gb, sk, pl, bg (code pays fourni par la source)

Characterizing the variability of a sample of massive stars in eclipsing binaries

Christian I. Eze, G. Handler, Filiz Kahraman Aliçavuş, T. Pawar et autres

Massive stars exhibit a perplexing mismatch between their inferred masses from different observational techniques, posing a significant challenge to our understanding of stellar evolution and structure. This discrepancy is believed to be caused by the underestimation of the convective core masses. The …

Tidally Distorted Stars Are Triaxial Pulsators

Jim Fuller, S. Rappaport, Rahul Jayaraman, D. W. Kurtz et autres

Abstract Stars in close binaries are tidally distorted, and this has a strong effect on their pulsation modes. We compute the mode frequencies and geometries of tidally distorted stars using perturbation theory, accounting for the effects of the Coriolis force and the …

HD 60435: the star that stopped pulsating

D. W. Kurtz, G. Handler, Daniel L. Holdsworth, M. S. Cunha et autres

ABSTRACT HD 60435 is a well known rapidly oscillating (roAp) Ap star with a series of alternating even and odd degree modes, making it a prime asteroseismic target. It is also an oblique pulsator with rotational inclination, i, and magnetic/pulsation obliquity, $\beta$, …

gb, Afrique du Sud, pl, rs, pt, jp, cz, au, dk, us, il, ca (code pays fourni par la source)

HD 60435: The star that stopped pulsating

D. W. Kurtz, G. Handler, Daniel L. Holdsworth, M. S. Cunha et autres

HD 60435 is a well-known rapidly oscillating (roAp) Ap star with a series of alternating even and odd degree modes, making it a prime asteroseismic target. It is also an oblique pulsator with rotational inclination, $i$, and magnetic/pulsation obliquity, $β$, such that …

Tidally distorted stars are triaxial pulsators

Jim Fuller, Saul Rappaport, Rahul Jayaraman, D. W. Kurtz et autres

Stars in close binaries are tidally distorted, and this has a strong effect on their pulsation modes. We compute the mode frequencies and geometries of tidally distorted stars using perturbation theory, accounting for the effects of the Coriolis force and the coupling …

TIC 435850195: The Second Triaxial Tidally Tilted Pulsator

Rahul Jayaraman, S. Rappaport, Brian P. Powell, G. Handler et autres

Abstract The Transiting Exoplanet Survey Satellite (TESS) has enabled the discovery of numerous tidally tilted pulsators (TTPs), which are pulsating stars in close binaries where the presence of a tidal bulge has the effect of tilting the primary star’s pulsation axes into …

TIC 435850195: The Second Tri-Axial, Tidally Tilted Pulsator

Rahul Jayaraman, S. Rappaport, Brian Powell, G. Handler et autres

The Transiting Exoplanet Survey Satellite (TESS) has enabled the discovery of numerous tidally tilted pulsators (TTPs), which are pulsating stars in close binaries where the presence of a tidal bulge has the effect of tilting the primary star's pulsation axes into the …

Characterization of the δ Scuti eclipsing binary KIC 4851217 and its tertiary companion as well as detection of tidally tilted pulsations

Zachary G. Jennings, J. Southworth, S. Rappaport, T. Borkovits et autres

ABSTRACT Stellar theory enables us to understand the properties of stars at different stages of their evolution, and contributes to other fields of astrophysics such as galactic and exoplanet studies. Assessing the accuracy of stellar theories necessitates high precision, model-independent measurements of …

gb, us, hu, pl, Afrique du Sud (code pays fourni par la source)

Characterization of the $δ$ Scuti eclipsing binary KIC 4851217 and its tertiary companion as well as detection of tidally tilted pulsations

Z. Jennings, J. Southworth, S. Rappaport, T. Borkovits et autres

Stellar theory enables us to understand the properties of stars at different stages of their evolution, and contributes to other fields of astrophysics such as galactic and exoplanet studies. Assessing the accuracy of stellar theories necessitates high precision, model-independent measurements of the …

β Cephei Pulsators in Eclipsing Binaries Observed with TESS

Christian I. Eze, G. Handler

Abstract The combined strength of asteroseismology and empirical stellar basic parameter determinations for in-depth asteroseismic analysis of massive pulsators in eclipsing binaries shows great potential for treating the challenging and mysterious discrepancies between observations and models of stellar structure and the evolution …

On the Existence of "Maia variables"

Filiz Kahraman Aliçavuş, G. Handler, S. Chowdhury, E. Niemczura et autres

There are different classes of pulsating stars in the H-R diagram. While many of those classes are undisputed, some remain a mystery such as the objects historically called "Maia variables". Whereas the presence of such a class was suggested seven decades ago, …