Zobrazeno 1 - 10
of 10 612
pro vyhledávání: '"(Bell, K"'
Publikováno v:
In The Breast December 2023 72
Autor:
Sahoo, S. K., Baran, A. S., Heber, U., Ostrowski, J., Sanjayan, S., Silvotti, R., Irrgang, A., Uzundag, M., Reed, M. D., Shoaf, K. A., Raddi, R., Vuckovic, M., Ghasemi, H., Zong, W., Bell, K. J.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 495, Issue 3, July 2020, Pages 2844-2857
We report on the detection of pulsations of three pulsating subdwarf B stars observed by the TESS satellite and our results of mode identification in these stars based on an asymptotic period relation. SB 459 (TIC 067584818), SB 815 (TIC 169285097) a
Externí odkaz:
http://arxiv.org/abs/2006.04126
Autor:
Bognár, Zs., Kawaler, S. D., Bell, K. J., Schrandt, C., Baran, A. S., Bradley, P. A., Hermes, J. J., Charpinet, S., Handler, G., Mullally, S. E., Murphy, S. J., Raddi, R., Sódor, Á., Tremblay, P. -E., Uzundag, M., Zong, W.
Publikováno v:
A&A 638, A82 (2020)
Context. We present our findings on 18 formerly known ZZ Ceti stars observed by the TESS space telescope in 120s cadence mode during the survey observation of the southern ecliptic hemisphere. Aims. We focus on the frequency analysis of the space-bas
Externí odkaz:
http://arxiv.org/abs/2003.11481
The standard theory of pulsations deals with the frequencies and growth rates of infinitesimal perturbations in a stellar model. Modes which are calculated to be linearly driven should increase their amplitudes exponentially with time; the fact that
Externí odkaz:
http://arxiv.org/abs/2001.05048
Autor:
Charpinet, S., Brassard, P., Fontaine, G., Van Grootel, V., Zong, W., Giammichele, N., Heber, U., Bognár, Zs., Geier, S., Green, E. M., Hermes, J. J., Kilkenny, D., Østensen, R. H., Pelisoli, I., Silvotti, R., Telting, J. H., Vučković, M., Worters, H. L., Baran, A. S., Bell, K. J., Bradley, P. A., Debes, J. H., Kawaler, S. D., Kołaczek-Szymański, P., Murphy, S. J., Pigulski, A., Sódor, À., Uzundag, M., Handberg, R., Kjeldsen, H., Ricker, G. R., Vanderspek, R. K.
Publikováno v:
A&A 632, A90 (2019)
We present the discovery and asteroseismic analysis of a new g-mode hot B subdwarf (sdB) pulsator, EC 21494-7018 (TIC 278659026), monitored in TESS first sector using 120-second cadence. The light curve analysis reveals that EC 21494-7018 is a sdB pu
Externí odkaz:
http://arxiv.org/abs/1910.04234
Akademický článek
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Autor:
Vanderbosch, Z., Hermes, J. J., Dennihy, E., Dunlap, B. H., Izquierdo, P., Tremblay, P. E., Cho, P. B., Gaensicke, B. T., Toloza, O., Bell, K. J., Montgomery, M. H., Winget, D. E.
Publikováno v:
ApJ 2020, 897, 171
We report the discovery of a white dwarf exhibiting deep, irregularly shaped transits, indicative of circumstellar planetary debris. Using Zwicky Transient Facility DR2 photometry of ZTF$\,$J013906.17+524536.89 and follow-up observations from the Las
Externí odkaz:
http://arxiv.org/abs/1908.09839
Publikováno v:
A&A 621, A21 (2019)
The study of stellar activity cycles is crucial to understand the underlying dynamo and how it causes activity signatures such as dark spots and bright faculae. We study the appearance of activity signatures in contemporaneous photometric and chromos
Externí odkaz:
http://arxiv.org/abs/1810.11250
Stars are stretched by tidal interactions in tight binaries, and changes to their projected areas introduce photometric variations twice per orbit. Hermes et al. (2014, ApJ, 792, 39) utilized measurements of these ellipsoidal variations to constrain
Externí odkaz:
http://arxiv.org/abs/1809.05623