Zobrazeno 1 - 10
of 513
pro vyhledávání: '"Kurtz, Donald"'
Autor:
Shi, Fangfei, Zhang, Huawei, Hubrig, Swetlana, Jarvinen, Silva, Chen, Huiling, Cang, Tianqi, Fu, Jianning, Kurtz, Donald
KIC 10685175 is a roAp star whose polar magnetic field is predicted to be 6 kG through a non-adiabatic axisymmetric pulsation theoretical model. In this work, we aim to measure the magnetic field strength of KIC 10685175 using high-resolution spectro
Externí odkaz:
http://arxiv.org/abs/2409.19593
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
Autor:
Guo, Zhao, Bedding, Timothy R., Pamyatnykh, A. A., Kurtz, Donald W., Li, Gang, Gautam, Anuj, Murphy, Simon J., Aerts, Conny
We find that the observed pressure-mode rotational splittings of slowly/moderately rotating Delta Scuti stars and Beta Cephei stars mostly have a positive asymmetry. That is, the left frequency spacing is larger than the right spacing in the dipole m
Externí odkaz:
http://arxiv.org/abs/2406.15678
The Nainital-Cape Survey was initiated more than two decades ago aiming to search for and study the pulsational variability in two subclasses of chemically peculiar (CP) stars, namely the Ap and Am stars. In this paper, we present the TESS photometry
Externí odkaz:
http://arxiv.org/abs/2309.15879
Autor:
Murphy, Simon J, Moe, Maxwell, Kurtz, Donald W, Bedding, Timothy R, Shibahashi, Hiromoto, Boffin, Henri M J
The orbital parameters of binaries at intermediate periods (10(2)-10(3) d) are difficult to measure with conventional methods and are very incomplete. We have undertaken a new survey, applying our pulsation timing method to Kepler light curves of 222
Externí odkaz:
http://hdl.handle.net/10150/627133
http://arizona.openrepository.com/arizona/handle/10150/627133
http://arizona.openrepository.com/arizona/handle/10150/627133
Autor:
Henriksen, Andreea I., Antoci, Victoria, Saio, Hideyuki, Cantiello, Matteo, Kjeldsen, Hans, Kurtz, Donald W., Murphy, Simon J., Mathur, Savita, García, Rafael A., Santos, Ângela R. G.
The Kepler mission revealed a plethora of stellar variability in the light curves of many stars, some associated with magnetic activity or stellar oscillations. In this work, we analyse the periodic signal in 162 intermediate-mass stars, interpreted
Externí odkaz:
http://arxiv.org/abs/2301.04974
We present a sample of 2700 Ap stars in LAMOST DR9. The candidates are first selected to be in a temperature range typical of Ap stars by using the $BP$-$RP$ color index from Gaia DR3. Then the 5200\,\AA\ flux depression features characteristic of Ap
Externí odkaz:
http://arxiv.org/abs/2212.02788
Autor:
Jayaraman, Rahul, Handler, Gerald, Rappaport, Saul, Fuller, Jim, Kurtz, Donald W., Charpinet, Stéphane, Ricker, George
Tidally tilted pulsators (TTPs) are an intriguing new class of oscillating stars in binary systems; in such stars, the pulsation axis coincides with the line of apsides, or semi-major axis, of the binary. All three TTPs discovered so far have been $\
Externí odkaz:
http://arxiv.org/abs/2203.04970
Autor:
Kurtz, Donald
Asteroseismology has grown from its beginnings three decades ago to a mature field teeming with discoveries and applications. This phenomenal growth has been enabled by space photometry with precision $10-100$ times better than ground-based observati
Externí odkaz:
http://arxiv.org/abs/2201.11629