Zobrazeno 1 - 10
of 4 727
pro vyhledávání: '"P Handler"'
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 forc
Externí odkaz:
http://arxiv.org/abs/2411.09743
Autor:
Jayaraman, Rahul, Rappaport, Saul, Powell, Brian, Handler, Gerald, Omohundro, Mark, Gagliano, Robert, Kostov, Veselin, Fuller, Jim, Kurtz, Donald, Zhang, Valencia, Ricker, George
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 pulsa
Externí odkaz:
http://arxiv.org/abs/2409.03815
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 hi
Externí odkaz:
http://arxiv.org/abs/2408.00126
Autor:
Aliçavuş, F. Kahraman, Handler, G., Chowdhury, S., Niemczura, E., Jayaraman, R., De Cat, P., Ozuyar, D., Aliçavuş, F.
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 de
Externí odkaz:
http://arxiv.org/abs/2404.16988
Autor:
Eze, C. I., Handler, G.
Publikováno v:
Contributions of the Astronomical Observatory Skalnate Pleso, 54(2): 70-74 (2024)
Asteroseismology coupled with eclipsing binary modelling shows a great potential in improving the efficiency of measurements or calibrations of the interior mixing profile in massive stars. This helps, for instance in treating the challenging and mys
Externí odkaz:
http://arxiv.org/abs/2404.11178
Autor:
Eze, Christian I., Handler, Gerald
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 discrepanc
Externí odkaz:
http://arxiv.org/abs/2403.12281
Autor:
Calcaferro, Leila M., Sowicka, Paulina, Uzundag, Murat, Córsico, Alejandro H., Kepler, S. O., Bell, Keaton J., Althaus, Leandro G., Handler, Gerald, Kawaler, Steven D., Werner, Klaus
Publikováno v:
A&A 686, A140 (2024)
Significant advances have been achieved through the latest improvements in the photometric observations accomplished by the recent space missions, substantially boosting the study of pulsating stars via asteroseismology. The TESS mission has already
Externí odkaz:
http://arxiv.org/abs/2402.16642
Autor:
Holdsworth, D. L., Cunha, M. S., Lares-Martiz, M., Kurtz, D. W., Antoci, V., Forteza, S. Barceló, De Cat, P., Derekas, A., Kayhan, C., Ozuyar, D., Skarka, M., Hey, D. R., Shi, F., Bowman, D. M., Kobzar, O., Gómez, A. Ayala, Bognár, Zs., Buzasi, D. L., Ebadi, M., Fox-Machado, L., Hernández, A. García, Ghasemi, H., Guzik, J. A., Handberg, R., Handler, G., Hasanzadeh, A., Jayaraman, R., Khalack, V., Kochukhov, O., Lovekin, C. C., Mikołajczyk, P., Mkrtichian, D., Murphy, S. J., Niemczura, E., Olafsson, B. G., Pascual-Granado, J., Paunzen, E., Posiłek, N., Safari, A. Ramón-Ballesta H., Samadi-Ghadim, A., Smalley, B., Sódor, Á., Stateva, I., Suárez, J. C., Szabó, R., Wu, T., Ziaali, E., Zong, W., Seager, S.
We present the results of a systematic search of the Transiting Exoplanet Survey Satellite (TESS) 2-min cadence data for new rapidly oscillating Ap (roAp) stars observed during the Cycle 2 phase of its mission. We find seven new roAp stars previously
Externí odkaz:
http://arxiv.org/abs/2312.04199
A model for the structure function constant associated with index of refraction fluctuations in Rayleigh-Benard turbulence is developed. The model is based upon the following assumptions: (1) the turbulence is homogeneous and isotropic at or near the
Externí odkaz:
http://arxiv.org/abs/2310.19977
Autor:
Sowicka, Paulina, Handler, Gerald, Jones, David, Caldwell, John A. R., van Wyk, Francois, Paunzen, Ernst, Bąkowska, Karolina, de Arriba, Luis Peralta, Suárez-Andrés, Lucía, Werner, Klaus, Karjalainen, Marie, Holdsworth, Daniel L.
We present the results of new time series photometric observations of 29 pre-white dwarf stars of PG 1159 spectral type, carried out in the years 2014-2022. For the majority of stars, a median noise level in Fourier amplitude spectra of 0.5-1.0 mmag
Externí odkaz:
http://arxiv.org/abs/2309.16537