Search Results - "Mérand, A."

First Resolution of Microlensed Images by Dong, Subo, Mérand, A., Delplancke-Ströbele, F., Gould, Andrew, Chen, Ping, Post, R., Kochanek, C. S., Stanek, K. Z., Christie, G. W., Mutel, Robert, Natusch, T., Holoien, T. W.-S., Prieto, J. L., Shappee, B. J., Thompson, Todd A.

“…Abstract We employ Very Large Telescope Interferometer GRAVITY to resolve, for the first time, the two images generated by a gravitational microlens. The…”
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Colder and Hotter: Interferometric Imaging of β Cassiopeiae and α Leonis by Che, X, Monnier, J. D, Zhao, M, Pedretti, E, Thureau, N, Mérand, A, ten Brummelaar, T, McAlister, H, Ridgway, S. T, Turner, N, Sturmann, J, Sturmann, L

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Tracing a decade of activity towards a yellow hypergiant. The spectral and spatial morphology of IRC+10420 at au scales by Koumpia, Evgenia, Oudmaijer, R D, de Wit, W-J, Mérand, A, Black, J H, Ababakr, K M

“…ABSTRACT The fate of a massive star during the latest stages of its evolution is highly dependent on its mass-loss history and geometry, with the yellow…”
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Imaging and Modeling Rapidly Rotating Stars: α Cephei and α Ophiuchi by Zhao, M, Monnier, J. D, Pedretti, E, Thureau, N, Mérand, A, Ten Brummelaar, T, McAlister, H, Ridgway, S. T, Turner, N, Sturmann, J, Sturmann, L, Goldfinger, P. J, Farrington, C

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A Geometrical 1% Distance to the Short-period Binary Cepheid V1334 Cygni by Gallenne, A., Kervella, P., Evans, N. R., Proffitt, C. R, Monnier, J. D., Mérand, A., Nelan, E., Winston, E., Pietrzy ski, G., Schaefer, G., Gieren, W., Anderson, R. I., Borgniet, S., Kraus, S., Roettenbacher, R. M., Baron, F., Pilecki, B., Taormina, M., Graczyk, D., Mowlavi, N., Eyer, L.

“…Cepheid stars play a considerable role as extragalactic distances indicators, thanks to the simple empirical relation between their pulsation period and their…”
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A magnetic massive star has experienced a stellar merger by Frost, A J, Sana, H, Mahy, L, Wade, G, Barron, J, Le Bouquin, J-B, Mérand, A, Schneider, F R N, Shenar, T, Barbá, R H, Bowman, D M, Fabry, M, Farhang, A, Marchant, P, Morrell, N I, Smoker, J V

“…Massive stars (those ≥8 solar masses at formation) have radiative envelopes that cannot sustain a dynamo, the mechanism that produces magnetic fields in…”
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Spitzer + VLTI-GRAVITY Measure the Lens Mass of a Nearby Microlensing Event by Zang, Weicheng, Dong, Subo, Gould, Andrew, Calchi Novati, Sebastiano, Chen, Ping, Yang, Hongjing, Li, Shun-Sheng, Mao, Shude, Alton, K. B., Brimacombe, J., Carey, Sean, Christie, G. W., Delplancke-Ströbele, F., Feliz, Dax L., Gaudi, B. Scott, Green, J., Hu, Shaoming, Jayasinghe, T., Koff, R. A., Kurtenkov, A., Mérand, A., Minev, Milen, Mutel, Robert, Natusch, T., Roth, Tyler, Shvartzvald, Yossi, Sun, Fengwu, Vanmunster, T., Zhu, Wei

“…We report the lens mass and distance measurements of the nearby microlensing event TCP J05074264+2447555 (Kojima-1). We measure the microlens parallax vector…”
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First Results from the CHARA Array. IV. The Interferometric Radii of Low-Mass Stars by Berger, D. H, Gies, D. R, McAlister, H. A, Brummelaar, T. A. ten, Henry, T. J, Sturmann, J, Sturmann, L, Turner, N. H, Ridgway, S. T, Aufdenberg, J. P, Mérand, A

“…We have measured the angular diameters of six M dwarfs with the CHARA Array, a long-baseline optical interferometer located at Mount Wilson Observatory…”
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First Results from the CHARA Array. VII. Long-Baseline Interferometric Measurements of Vega Consistent with a Pole-On, Rapidly Rotating Star by Aufdenberg, J. P, Mérand, A, Foresto, V. Coudé du, Absil, O, Di Folco, E, Kervella, P, Ridgway, S. T, Berger, D. H, Brummelaar, T. A. ten, McAlister, H. A, Sturmann, J, Sturmann, L, Turner, N. H

“…We have obtained high-precision interferometric measurements of Vega with the CHARA Array and FLUOR beam combiner in the K' band at projected baselines between…”
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The Path Towards High-Contrast Imaging with the VLTI: The Hi-5 Project by Defrere, D., Absil, O., Berger, J.-P., Boulet, T., Danchi, W. C., Ertel, S., Gallenne, A., Henault, F., Hinz, P., Huby, E., Ireland, M., Kraus, S., Labadie, L., Le Bouquin, J.-B., Martin, G., Matter, A., Merand, A., Mennesson, B., Minardi, S., Monnier, J. D., Norris, B., Orban de Xivry, G., Pedretti, E., Pott, J.-U., Reggiani, M., Serabyn, E., Surdej, J., Tristram, K. R. W., Woillez, J.

“…The development of high-contrast capabilities has long been recognized as one of the top priorities for the VLTI (Very Large Telescope Interferometer). As of…”
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CHARA Array K'-Band Measurements of the Angular Dimensions of Be Star Disks by Gies, D. R, Bagnuolo, Jr., W. G, Baines, E. K, ten Brummelaar, T. A, Farrington, C. D, Goldfinger, P. J, Grundstrom, E. D, Huang, W, McAlister, H. A, Mérand, A, Sturmann, J, Sturmann, L, Touhami, Y, Turner, N. H, Wingert, D. W, Berger, D. H, McSwain, M. V, Aufdenberg, J. P, Ridgway, S. T, Cochran, A. L, Lester, D. F, Sterling, N. C, Bjorkman, J. E, Bjorkman, K. S, Koubský, P

“…We present the first K'-band, long-baseline interferometric observations of the northern Be stars g Cas, h Per, Tau, and Dra. The measurements were made with…”
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Multiplicity of Galactic Cepheids from long-baseline interferometry – III. Sub-percent limits on the relative brightness of a close companion of δ Cephei by Gallenne, A., Mérand, A., Kervella, P., Monnier, J. D., Schaefer, G. H., Roettenbacher, R. M., Gieren, W., Pietrzyński, G., McAlister, H., ten Brummelaar, T., Sturmann, J., Sturmann, L., Turner, N., Anderson, R. I.

“…We report new CHARA/Michigan InfraRed Combiner interferometric observations of the Cepheid archetype δ Cep, which aimed at detecting the newly discovered…”
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Toward Direct Detection of Hot Jupiters with Precision Closure Phase: Calibration Studies and First Results from the CHARA Array by Zhao, M., Monnier, J. D., Che, X., Pedretti, E., Thureau, N., Schaefer, G., ten Brummelaar, T., Mérand, A., Ridgway, S. T., McAlister, H., Turner, N., Sturmann, J., Sturmann, L., Goldfinger, P. J., Farrington, C.

“…Direct detection of thermal emission from nearby hot Jupiters has greatly advanced our knowledge of extrasolar planets in recent years. Since hot Jupiter…”
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Pre-main-sequence binaries with tidally disrupted discs: the Brγ in HD 104237 by Garcia, P. J. V., Benisty, M., Dougados, C., Bacciotti, F., Clausse, J.-M., Massi, F., Mérand, A., Petrov, R., Weigelt, G.

“…Active pre-main-sequence binaries with separations of around 10 stellar radii present a wealth of phenomena unobserved in common systems. The study of these…”
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Multiplicity of Galactic Cepheids from long-baseline interferometry - III. Sub-percent limits on the relative brightness of a close companion of d Cephei by Gallenne, A, Merand, A, Kervella, P, Monnier, J D, Schaefer, G H, Roettenbacher, R M, Gieren, W, Pietrzynski, G, McAlister, H, ten Brummelaar, T, Sturmann, J, Sturmann, L, Turner, N, Anderson, R I

“…We report new CHARA/Michigan InfraRed Combiner interferometric observations of the Cepheid archetype ... Cep, which aimed at detecting the newly discovered…”
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Four years’ interferometric observations of Galactic binary Cepheids by Gallenne, A., Mérand, A., Kervella, P., Evans, N.R., Proffitt, C., Pietrzński, G., Gieren, W.

“…We give an update on our long-term program of Galactic Cepheids started in 2012, whose goal is to measure the visual orbits of Cepheid companions. Using the…”
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The cool brown dwarf Gliese 229 B is a close binary by Xuan, Jerry W., Mérand, A., Thompson, W., Zhang, Y., Lacour, S., Blakely, D., Mawet, D., Oppenheimer, R., Kammerer, J., Batygin, K., Sanghi, A., Wang, J., Ruffio, J.-B., Liu, M. C., Knutson, H., Brandner, W., Burgasser, A., Rickman, E., Bowens-Rubin, R., Salama, M., Balmer, W., Blunt, S., Bourdarot, G., Caselli, P., Chauvin, G., Davies, R., Drescher, A., Eckart, A., Eisenhauer, F., Fabricius, M., Feuchtgruber, H., Finger, G., Förster Schreiber, N. M., Garcia, P., Genzel, R., Gillessen, S., Grant, S., Hartl, M., Haußmann, F., Henning, T., Hinkley, S., Hönig, S. F., Horrobin, M., Houllé, M., Janson, M., Kervella, P., Kral, Q., Kreidberg, L., Le Bouquin, J.-B., Lutz, D., Mang, F., Marleau, G.-D., Millour, F., More, N., Nowak, M., Ott, T., Otten, G., Paumard, T., Rabien, S., Rau, C., Ribeiro, D. C., Sadun Bordoni, M., Sauter, J., Shangguan, J., Shimizu, T. T., Sykes, C., Soulain, A., Spezzano, S., Straubmeier, C., Stolker, T., Sturm, E., Subroweit, M., Tacconi, L. J., van Dishoeck, E. F., Vigan, A., Widmann, F., Wieprecht, E., Winterhalder, T. O., Woillez, J.

“…Owing to their similarities with giant exoplanets, brown dwarf companions of stars provide insights into the fundamental processes of planet formation and…”
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Gaia22dkvLb: A Microlensing Planet Potentially Accessible to Radial-velocity Characterization by Wu, Zexuan, Dong, Subo, Yi, Tuan, Liu, Zhuokai, El-Badry, Kareem, Gould, Andrew, Wyrzykowski, L., Rybicki, K. A., Bachelet, Etienne, Christie, Grant W., de Almeida, L., Monard, L. A. G., McCormick, J., Natusch, Tim, Zieliński, P., Chen, Huiling, Huang, Yang, Liu, Chang, Mérand, A., Mróz, Przemek, Shangguan, Jinyi, Udalski, Andrzej, Woillez, J., Zhang, Huawei, Hambsch, Franz-Josef, Mikołajczyk, P. J., Gromadzki, M., Ratajczak, M., Kruszyńska, Katarzyna, Ihanec, N., Pylypenko, Uliana, Sitek, M., Howil, K., Zola, Staszek, Michniewicz, Olga, Zejmo, Michal, Lewis, Fraser, Bronikowski, Mateusz, Potter, Stephen, Andrzejewski, Jan, Merc, Jaroslav, Street, Rachel, Fukui, Akihiko, Figuera Jaimes, R., Bozza, V., Rota, P., Cassan, A., Dominik, M., Tsapras, Y., Hundertmark, M., Wambsganss, J., Bąkowska, K., Słowikowska, A.

“…Abstract We report discovering an exoplanet from following up a microlensing event alerted by Gaia. The event Gaia22dkv is toward a disk source rather than the…”
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Submilliarcsecond Optical Interferometry of the High-mass X-Ray Binary BP Cru with VLTI/GRAVITY by Waisberg, I., Dexter, J., Pfuhl, O., Abuter, R., Amorim, A., Anugu, N., Berger, J. P., Blind, N., Bonnet, H., Brandner, W., Buron, A., Clénet, Y., Wit, W. de, Deen, C., Delplancke-Ströbele, F., Dembet, R., Duvert, G., Eckart, A., Eisenhauer, F., Fédou, P., Finger, G., Garcia, P., Lopez, R. Garcia, Gendron, E., Genzel, R., Gillessen, S., Haubois, X., Haug, M., Haussmann, F., Henning, Th, Hippler, S., Horrobin, M., Hubert, Z., Jochum, L., Jocou, L., Kervella, P., Kok, Y., Kulas, M., Lacour, S., Lapeyrère, V., Bouquin, J.-B. Le, Léna, P., Lippa, M., Mérand, A., Müller, E., Ott, T., Pallanca, L., Panduro, J., Paumard, T., Perraut, K., Perrin, G., Rabien, S., Ramírez, A., Ramos, J., Rau, C., Rohloff, R.-R., Rousset, G., Sanchez-Bermudez, J., Scheithauer, S., Schöller, M., Straubmeier, C., Sturm, E., Vincent, F., Wank, I., Wieprecht, E., Wiest, M., Wiezorrek, E., Wittkowski, M., Woillez, J., Yazici, S.

“…We observe the high-mass X-ray binary (HMXB) BP Cru using interferometry in the near-infrared K band with VLTI/GRAVITY. Continuum visibilities are at most…”
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HD 181068: A Red Giant in a Triply Eclipsing Compact Hierarchical Triple System by Derekas, A., Kiss, L. L., Borkovits, T., Huber, D., Lehmann, H., Southworth, J., Bedding, T. R., Balam, D., Hartmann, M., Hrudkova, M., Ireland, M. J., Kovács, J., Mező, Gy, Moór, A., Niemczura, E., Sarty, G. E., Szabó, Gy. M., Szabó, R., Telting, J. H., Tkachenko, A., Uytterhoeven, K., Benkő, J. M., Bryson, S. T., Maestro, V., Simon, A. E., Stello, D., Schaefer, G., Aerts, C., Brummelaar, T. A. ten, De Cat, P., McAlister, H. A., Maceroni, C., Mérand, A., Still, M., Sturmann, J., Sturmann, L., Turner, N., Tuthill, P. G., Christensen-Dalsgaard, J., Gilliland, R. L., Kjeldsen, H., Quintana, E. V., Tenenbaum, P., Twicken, J. D.

“…Hierarchical triple systems comprise a close binary and a more distant component. They are important for testing theories of star formation and of stellar…”
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