Search Results - "Van Grootel, V."

WASP-121 b: a hot Jupiter close to tidal disruption transiting an active F star by Delrez, L., Santerne, A., Almenara, J.-M., Anderson, D. R., Collier-Cameron, A., Díaz, R. F., Gillon, M., Hellier, C., Jehin, E., Lendl, M., Maxted, P. F. L., Neveu-VanMalle, M., Pepe, F., Pollacco, D., Queloz, D., Ségransan, D., Smalley, B., Smith, A. M. S., Triaud, A. H. M. J., Udry, S., Van Grootel, V., West, R. G.

“…We present the discovery by the WASP-South survey of WASP-121 b, a new remarkable short-period transiting hot Jupiter. The planet has a mass of…”
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A BCool magnetic snapshot survey of solar-type stars by Marsden, S. C., Petit, P., Jeffers, S. V., Morin, J., Fares, R., Reiners, A., do Nascimento, J.-D., Aurière, M., Bouvier, J., Carter, B. D., Catala, C., Dintrans, B., Donati, J.-F., Gastine, T., Jardine, M., Konstantinova-Antova, R., Lanoux, J., Lignières, F., Morgenthaler, A., Ramìrez-Vèlez, J. C., Théado, S., Van Grootel, V.

“…We present the results of a major high-resolution spectropolarimetric BCool project magnetic survey of 170 solar-type stars. Surface magnetic fields were…”
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A compact system of small planets around a former red-giant star by Charpinet, S., Fontaine, G., Brassard, P., Green, E. M., Van Grootel, V., Randall, S. K., Silvotti, R., Baran, A. S., Østensen, R. H., Kawaler, S. D., Telting, J. H.

“…Two planets around the post-red-giant star KIC 05807616 are shown to have survived being engulfed by the former red giant Star pair shrugs off red giant Two…”
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Ground-based follow-up observations of TRAPPIST-1 transits in the near-infrared by Burdanov, A Y, Lederer, S M, Gillon, M, Delrez, L, Ducrot, E, de Wit, J, Jehin, E, Triaud, A H M J, Lidman, C, Spitler, L, Demory, B-O, Queloz, D, Van Grootel, V

“…Abstract The TRAPPIST-1 planetary system is a favourable target for the atmospheric characterization of temperate earth-sized exoplanets by means of…”
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First Kepler results on compact pulsators – I. Survey target selection and the first pulsators by Østensen, R. H., Silvotti, R., Charpinet, S., Oreiro, R., Handler, G., Green, E. M., Bloemen, S., Heber, U., Gänsicke, B. T., Marsh, T. R., Kurtz, D. W., Telting, J. H., Reed, M. D., Kawaler, S. D., Aerts, C., Rodríguez-López, C., Vučković, M., Ottosen, T. A., Liimets, T., Quint, A. C., Van Grootel, V., Randall, S. K., Gilliland, R. L., Kjeldsen, H., Christensen-Dalsgaard, J., Borucki, W. J., Koch, D., Quintana, E. V.

“…We present results from the first two quarters of a survey to search for pulsations in compact stellar objects with the Kepler spacecraft. The survey sample…”
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Kepler observations of the beaming binary KPD 1946+4340 by Bloemen, S., Marsh, T. R., Østensen, R. H., Charpinet, S., Fontaine, G., Degroote, P., Heber, U., Kawaler, S. D., Aerts, C., Green, E. M., Telting, J., Brassard, P., Gänsicke, B. T., Handler, G., Kurtz, D. W., Silvotti, R., Van Grootel, V., Lindberg, J. E., Pursimo, T., Wilson, P. A., Gilliland, R. L., Kjeldsen, H., Christensen-Dalsgaard, J., Borucki, W. J., Koch, D., Jenkins, J. M., Klaus, T. C.

“…The Kepler Mission has acquired 33.5 d of continuous 1-min photometry of KPD 1946+4340, a short-period binary system that consists of a subdwarf B star (sdB)…”
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A pulsation zoo in the hot subdwarf B star KIC 10139564 observed by Kepler by Baran, A. S., Reed, M. D., Stello, D., Østensen, R. H., Telting, J. H., Pakštienė, E., O'Toole, S. J., Silvotti, R., Degroote, P., Bloemen, S., Hu, H., Van Grootel, V., Clarke, B. D., Van Cleve, J., Thompson, S. E., Kawaler, S. D.

“…Abstract We present our analyses of 15 months of Kepler data on KIC 10139564. We detected 57 periodicities with a variety of properties not previously observed…”
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A large oxygen-dominated core from the seismic cartography of a pulsating white dwarf by Giammichele, N., Charpinet, S., Fontaine, G., Brassard, P., Green, E. M., Van Grootel, V., Bergeron, P., Zong, W., Dupret, M.-A.

“…Asteroseismic ‘sounding’ reveals the internal chemical stratification of the white dwarf KIC08626021, which has a central homogeneous core—composed of 86 per…”
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Early 2017 observations of TRAPPIST-1 with Spitzer by Delrez, L, Gillon, M, Triaud, A H M J, Demory, B-O, de Wit, J, Ingalls, J G, Agol, E, Bolmont, E, Burdanov, A, Burgasser, A J, Carey, S J, Jehin, E, Leconte, J, Lederer, S, Queloz, D, Selsis, F, Van Grootel, V

“…Abstract The recently detected TRAPPIST-1 planetary system, with its seven planets transiting a nearby ultracool dwarf star, offers the first opportunity to…”
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Gaia white dwarfs within 40 pc – I. Spectroscopic observations of new candidates by Tremblay, P-E, Hollands, M A, Gentile Fusillo, N P, McCleery, J, Izquierdo, P, Gänsicke, B T, Cukanovaite, E, Koester, D, Brown, W R, Charpinet, S, Cunningham, T, Farihi, J, Giammichele, N, van Grootel, V, Hermes, J J, Hoskin, M J, Jordan, S, Kepler, S O, Kleinman, S J, Manser, C J, Marsh, T R, de Martino, D, Nitta, A, Parsons, S G, Pelisoli, I, Raddi, R, Rebassa-Mansergas, A, Ren, J-J, Schreiber, M R, Silvotti, R, Toloza, O, Toonen, S, Torres, S

“…ABSTRACT We present a spectroscopic survey of 230 white dwarf candidates within 40 pc of the Sun from the William Herschel Telescope and Gran Telescopio…”
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HD 97658 and its super-Earth by Van Grootel, V., Gillon, M., Valencia, D., Madhusudhan, N., Dragomir, D., Howe, A.R., Burrows, A.S.

“…Super-Earths transiting nearby bright stars are key objects that simultaneously allow for accurate measurements of both their mass and radius, providing…”
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Asteroseismology of hot B subdwarf stars by Charpinet, S., Van Grootel, V., Brassard, P., Fontaine, G., Green, E.M., Randall, S.K.

“…Non-radial pulsations in Extreme Horizontal Branch stars (also known as hot B subdwarfs or sdB stars) offer strong opportunities to study, through…”
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THE NEWLY DISCOVERED PULSATING LOW-MASS WHITE DWARFS: AN EXTENSION OF THE ZZ CETI INSTABILITY STRIP by VAN GROOTEL, V, Fontaine, G, Brassard, P, Dupret, M-A

“…In light of the exciting discovery of g-mode pulsations in extremely low-mass, He-core DA white dwarfs, we report on the results of a detailed stability survey…”
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TRANSIT CONFIRMATION AND IMPROVED STELLAR AND PLANET PARAMETERS FOR THE SUPER-EARTH HD 97658 b AND ITS HOST STAR by VAN GROOTEL, V, Gillon, M, Valencia, D, Madhusudhan, N, Dragomir, D, Howe, A R, Burrows, A S, Demory, B-O, Deming, D, Ehrenreich, D

“…Super-Earths transiting nearby bright stars are key objects that simultaneously allow for accurate measurements of both their mass and radius, providing…”
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An overview of white dwarf stars by Fontaine, G., Brassard, P., Charpinet, S., Randall, S.K., Van Grootel, V.

“…We present a brief summary of what is currently known about white dwarf stars, with an emphasis on their evolutionary and internal properties. As is well…”
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Testing Seismic Models of Hot B Subdwarfs with Gaia Data by Fontaine, G., Bergeron, P., Brassard, P., Charpinet, S., Randall, S., Van Grootel, V., Latour, M., Green, E. M.

“…We report the results of a study designed to test further the basic validity of the seismic models of hot pulsating B subdwarfs that have been developed over…”
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The empirical mass distribution of hot B subdwarfs: Implications for stellar evolution theory by Van Grootel, V., Fontaine, G., Charpinet, S., Brassard, P., Green, E.M.

“…Subdwarf B (sdB) stars are hot, compact, and evolved objects that form the very hot end of the horizontal branch, the so-called Extreme Horizontal Branch…”
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A pulsation zoo in the hot subdwarf B star KIC10139564 observed by Kepler by Baran, A. S, Reed, M. D, Stello, D, Østensen, R. H, Telting, J. H, Pakstien, E, O'Toole, S. J, Silvotti, R, Degroote, P, Bloemen, S, Hu, H, Van Grootel, V, Clarke, B. D, Van Cleve, J, Thompson, S. E, Kawaler, S. D

“…We present our analyses of 15months of Kepler data on KIC10139564. We detected 57 periodicities with a variety of properties not previously observed all…”
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Spectral analysis and abundances of the post-HB star HD 76431 by Khalack, V., Yameogo, B., LeBlanc, F., Fontaine, G., Green, E., Van Grootel, V., Petit, P.

“…HD 76431 is a slow rotating post-HB star that shows an underabundance of helium by 0.5 dex relative to the solar value. These observational facts suggest that…”
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Discovery of a New AM CVn System with the Kepler Satellite by Fontaine, G, Brassard, P, Green, E. M, Charpinet, S, Dufour, P, Hubeny, I, Steeghs, D, Aerts, C, Randall, S. K, Bergeron, P, Guvenen, B, O'Malley, C. J, Van Grootel, V, Østensen, R. H, Bloemen, S, Silvotti, R, Howell, S. B, Baran, A, Kepler, S. O, Marsh, T. R, Montgomery, M. H, Oreiro, R, Provencal, J, Telting, J, Winget, D. E, Zima, W, Christensen-Dalsgaard, J, Kjeldsen, H

“…We report the discovery of a new AM CVn system on the basis of broadband photometry obtained with the Kepler satellite supplemented by ground-based optical…”
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