Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Provencal, J. L."'
Autor:
von Hippel, T., Farihi, J., Provencal, J. L., Kleinman, S. J., Pringle, J. E., Swan, A., Fontaine, G., Hermes, J. J., Sargent, J., Savery, Z., Cooper, W., Kim, V., Kozyreva, V., Krugov, M., Kusakin, A., Moss, A., Ogloza, W., Pakstiene, E., Serebryanskiy, A., Sonbas, E., Walter, B., Zejmo, M., Zola, S.
More than 36 years have passed since the discovery of the infrared excess from circumstellar dust orbiting the white dwarf G29-38, which at 17.5 pc it is the nearest and brightest of its class. The precise morphology of the orbiting dust remains only
Externí odkaz:
http://arxiv.org/abs/2401.02558
Autor:
da Rosa, Gabriela Oliveira, Kepler, S. O., Córsico, Alejandro H., Costa, J. E. S., Hermes, J. J., Kawaler, S. D., Bell, Keaton J., Montgomery, M. H., Provencal, J. L., Winget, D. E., Handler, G., Dunlap, Bart, Clemens, J. C., Uzundag, Murat
PG 1159-035 is the prototype of the DOV hot pre-white dwarf pulsators. It was observed during the Kepler satellite K2 mission for 69 days in 59 s cadence mode and by the TESS satellite for 25 days in 20 s cadence mode. We present a detailed asterosei
Externí odkaz:
http://arxiv.org/abs/2208.04791
Autor:
Mackebrandt, F., Schuh, S., Silvotti, R., Kim, S. -L., Kilkenny, D., Green, E. M., Lutz, R., Nagel, T., Provencal, J. L., Otani, T., Oswalt, T. D., Benatti, S., Lanteri, L., Bonanno, A., Frasca, A., Janulis, R., Paparó, M., Molnár, L., Claudi, R., Østensen, R. H.
Publikováno v:
A&A 638, A108 (2020)
We aim to investigate variations in the arrival time of coherent stellar pulsations due to the light-travel time effect to test for the presence of sub-stellar companions. Those companions are the key to one possible formation scenario of apparently
Externí odkaz:
http://arxiv.org/abs/2004.04764
Autor:
Bischoff-Kim, Agnes, Provencal, J. L., Bradley, P. A., Montgomery, M. H., Shipman, H. L., Harrold, Samuel T., Howard, B., Strickland, W., Chandler, D., Campbell, D., Arredondo, A., Linn, R., Russell, D. P., Doyle, D., Brickhouse, A., Peters, D., Kim, S. -L., Jiang, X. J., Mao, Y-N., Kusakin, A. V., Sergeev, A. V., Andreev, M., Velichko, S., Janulis, R., Pakstiene, E., Alicavus, F., Horoz, N., Zola, S., Ogloza, W., Koziel-Wierzbowska, D., Kundera, T., Jableka, D., Debski, B., Baran, A., Meingast, S., Nagel, T., Loebling, L., Heinitz, C., Hoyer, D., Bognar, Zs., Castanheira, B. G.
We report on the analysis of 34 years of photometric observations of the pulsating helium atmosphere white dwarf GD358. The complete data set includes archival data from 1982-2006, and 1195.2 hours of new observations from 2007- 2016. From this data
Externí odkaz:
http://arxiv.org/abs/1810.11708
Autor:
Hermes, J. J., Kawaler, Steven D., Bischoff-Kim, A., Provencal, J. L., Dunlap, B. H., Clemens, J. C.
We present the detection of non-radial oscillations in a hot, helium-atmosphere white dwarf using 78.7 d of nearly uninterrupted photometry from the Kepler space telescope. With an effective temperature >30,000 K, PG 0112+104 becomes the hottest heli
Externí odkaz:
http://arxiv.org/abs/1612.07807
Akademický článek
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Publikováno v:
MNRAS 431, pp520-527 (2013)
We present the analysis of 71 hours of high quality time-series CCD photometry of the helium atmosphere pulsating white dwarf (DBV) EC 04207-4748 obtained using the facilities at Mt John University Observatory in New Zealand. The photometric data set
Externí odkaz:
http://arxiv.org/abs/1412.5683
Autor:
Provencal, J. L., Montgomery, M. H., Kanaan, A., Thompson, S. E., Dalessio, J., Shipman, H. L., Childers, D., Clemens, J. C., Rosen, R., Henrique, P., Bischoff-Kim, A., Strickland, W., Chandler, D., Walter, B., Watson, T. K., Castanheira, B., Wang, S., Handler, G., Wood, M., Vennes, S., Nemeth, P., Kepler, S. O., Reed, M., Nitta, A., Kleinman, S. J., Brown, T., Kim, S. -L., Sullivan, D., Chen, Wen-Ping, Yang, M., Shih, Chia-You, Jiang, X. J., Sergeev, A. V., Maksim, A., Janulis, R., Baliyan, K. S., Vats, H. O., Zola, S., Baran, A., Winiarski, M., Ogloza, W., Paparo, M., Bognar, Z., Papics, P., Kilkenny, D., Sefako, R., Buckley, D., Loaring, N., Kniazev, A., Silvotti, R., Galleti, S., Nagel, T., Vauclair, G., Dolez, N., Fremy, J. R., Perez, J., Almenara, J. M., Fraga, L.
We report on analysis of 308.3 hrs of high speed photometry targeting the pulsating DA white dwarf EC14012-1446. The data were acquired with the Whole Earth Telescope (WET) during the 2008 international observing run XCOV26. The Fourier transform of
Externí odkaz:
http://arxiv.org/abs/1204.2558
Autor:
Reed, M. D., Baran, A., Quint, A. C., Kawaler, S. D., O'Toole, S. J., Telting, J., Charpinet, S., Rodriguez-Lopez, C., Ostensen, R. H., Provencal, J. L., Johnson, E. S., Thompson, S. E., Allen, C., Middour, C. K., Kjeldsen, H., Christensen-Dalsgaard, J.
We investigate the possibility of nearly-equally spaced periods in 13 hot subdwarf B (sdB) stars observed with the Kepler spacecraft and one observed with CoRoT. Asymptotic limits for gravity (g-)mode pulsations provide relationships between equal pe
Externí odkaz:
http://arxiv.org/abs/1102.4286
Publikováno v:
AIP Conference Proceedings, Volume 1331, pp. 278-280 (2011)
We present 13 years of pulsation timing measurements of the DBV white dwarf EC 2005-5234. Each of the four O-C diagrams mimic the sinusoidal behavior typically attributed to a planet + WD system. However, the amplitude and phase of the O-C variations
Externí odkaz:
http://arxiv.org/abs/1102.0507