Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Bradley, Paul A."'
Autor:
Uzundag, Murat, De Gerónimo, Francisco C., Córsico, Alejandro H., Silvotti, Roberto, Bradley, Paul A., Montgomery, Michael H., Catelan, Márcio, Toloza, Odette, Bell, Keaton J., Kepler, S. O., Althaus, Leandro G., Kleinman, Scot J., Kilic, Mukremin, Mullally, Susan E., Gänsicke, Boris T., Bąkowska, Karolina, Barber, Sam, Nitta, Atsuko
G\,29$-$38 (TIC~422526868) is one of the brightest ($V=13.1$) and closest ($d = 17.51$\,pc) pulsating white dwarfs with a hydrogen-rich atmosphere (DAV/ZZ Ceti class). It was observed by the {\sl TESS} spacecraft in sectors 42 and 56. The atmosphere
Externí odkaz:
http://arxiv.org/abs/2309.04809
Autor:
Romero, Alejandra D., da Rosa, Gabriela Oliveira, Kepler, S. O., Bradley, Paul A., Uzundag, Murat, Bell, Keaton J., Hermes, J. J., Lauffer, G. R.
We present the photometric data from TESS for two known ZZ Ceti stars, PG 1541+651 and BPM 31594. Before TESS, both objects only had observations from short runs from ground-based facilities, with three and one period detected, respectively. The TESS
Externí odkaz:
http://arxiv.org/abs/2210.15163
Autor:
Córsico, Alejandro H., Uzundag, Murat, Kepler, S. O., Althaus, Leandro G., Silvotti, Roberto, Bradley, Paul A., Baran, Andrzej S., Koester, Detlev, Bell, Keaton J., Romero, Alejandra D., Hermes, J. J., Fusillo, Nicola P. Gentile
The {\sl TESS} space mission has recently demonstrated its great potential to discover new pulsating white dwarf and pre-white dwarf stars, and to detect periodicities with high precision in already known white-dwarf pulsators. We report the discover
Externí odkaz:
http://arxiv.org/abs/2210.05486
Autor:
Romero, A. D., Kepler, S. O., Hermes, J. J., Amaral, Larissa Antunes, Uzundag, Murat, Bognár, Zsófia, Bell, Keaton J., VanWyngarden, Madison, Baran, Andy, Pelisoli, Ingrid, Oliveira, Gabriela da Rosa, Koester, Detlev, Klippel, T. S., Fraga, Luciano, Bradley, Paul A., Vučković, Maja, Heintz, Tyler M., Reding, Joshua S., Kaiser, B. C., Charpinet, Stéphane
We report the discovery of 74 new pulsating DA white dwarf stars, or ZZ Cetis, from the data obtained by the Transiting Exoplanet Survey Satellite (TESS) mission, from Sectors 1 to 39, corresponding to the first 3 cycles. This includes objects from t
Externí odkaz:
http://arxiv.org/abs/2201.04158
Autor:
Córsico, Alejandro H., Uzundag, Murat, Kepler, S. O., Silvotti, Roberto, Althaus, Leandro G., Koester, Detlev, Baran, Andrzej S., Bell, Keaton J., Bischoff-Kim, Agnès, Hermes, J. J., Kawaler, Steve D., Provencal, Judith L., Winget, Don E., Montgomery, Michael H., Bradley, Paul A., Kleinman, S. J., Nitta, Atsuko
Publikováno v:
A&A 659, A30 (2022)
The collection of high-quality photometric data by space telescopes is revolutionizing the area of white-dwarf asteroseismology. Among the different kinds of pulsating white dwarfs, there are those that have He-rich atmospheres, and they are called D
Externí odkaz:
http://arxiv.org/abs/2111.15551
Autor:
Bradley, Paul
We prove that it is always possible to find a permutation $p$ on the set $\{1,...,n\}$ such that $c+p(c)$ is prime for all $c \in \{1,...,n\}.$
Comment: 5 pages
Comment: 5 pages
Externí odkaz:
http://arxiv.org/abs/1809.01012
Autor:
Bradley, Paul
In 1988 Siemons and Wagner describe a relationship between the lengths of $G$-orbits on subsets of a $G$-set $\Omega$. They highlighted the situation where $\Delta \subset \Omega$ with $|\Delta|=k,$ and $|\Delta^G|>|\Sigma^G|$ for all $(k+1)$-subsets
Externí odkaz:
http://arxiv.org/abs/1808.10832
Autor:
Bradley, Paul, Smethurst, John
Here we present a working framework to establish finite abelian groups in python. The primary aim is to allow new A-level students to work with examples of finite abelian groups using open source software. We include the code used in the implementati
Externí odkaz:
http://arxiv.org/abs/1711.05814
The NASA Kepler spacecraft data revealed a large number of multimode nonradially pulsating gamma Dor and delta Sct variable star candidates. The high precision long time-series photometry makes it possible to study amplitude variations of the frequen
Externí odkaz:
http://arxiv.org/abs/1605.04443
Autor:
Bradley, Paul A., Guzik, Joyce A., Miles, Lillian F., Uytterhoeven, Katrien, Jackiewicz, Jason, Kinemuchi, Karen
Publikováno v:
Astronomical Journal, 149, 68 (2015)
The light curves of 2768 stars with effective temperatures and surface gravities placing them near the gamma Doradus/delta Scuti instability region were observed as part of the Kepler Guest Observer program from Cycles 1 through 5. The light curves w
Externí odkaz:
http://arxiv.org/abs/1502.00928