January
2018
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2018ApJ...853L...8B
Authors
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Boyajian, Tabetha. S.
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Alonso, Roi
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Ammerman, Alex
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Armstrong, David
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Asensio Ramos, A.
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Barkaoui, K.
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Beatty, Thomas G.
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Benkhaldoun, Z.
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Benni, Paul
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Bentley, Rory O.
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Berdyugin, Andrei
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Berdyugina, Svetlana
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Bergeron, Serge
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Bieryla, Allyson
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Blain, Michaela G.
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Capetillo Blanco, Alicia
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Bodman, Eva H. L.
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Boucher, Anne
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Bradley, Mark
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Brincat, Stephen M.
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Brink, Thomas G.
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Briol, John
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Brown, David J. A.
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Budaj, J.
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Burdanov, A.
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Cale, B.
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Aznar Carbo, Miguel
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Castillo García, R.
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Clark, Wendy J.
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Clayton, Geoffrey C.
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Clem, James L.
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Coker, Phillip H.
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Cook, Evan M.
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Copperwheat, Chris M.
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Curtis, J. L.
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Cutri, R. M.
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Cseh, B.
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Cynamon, C. H.
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Daniels, Alex J.
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Davenport, James R. A.
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Deeg, Hans J.
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De Lorenzo, Roberto
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de Jaeger, Thomas
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Desrosiers, Jean-Bruno
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Dolan, John
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Dowhos, D. J.
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Dubois, Franky
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Durkee, R.
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Dvorak, Shawn
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Easley, Lynn
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Edwards, N.
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Ellis, Tyler G.
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Erdelyi, Emery
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Ertel, Steve
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Farfán, Rafael. G.
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Farihi, J.
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Filippenko, Alexei V.
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Foxell, Emma
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Gandolfi, Davide
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Garcia, Faustino
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Giddens, F.
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Gillon, M.
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González-Carballo, Juan-Luis
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González-Fernández, C.
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González Hernández, J. I.
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Graham, Keith A.
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Greene, Kenton A.
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Gregorio, J.
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Hallakoun, Na'ama
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Hanyecz, Ottó
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Harp, G. R.
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Henry, Gregory W.
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Herrero, E.
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Hildbold, Caleb F.
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Hinzel, D.
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Holgado, G.
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Ignácz, Bernadett
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Ilyin, Ilya
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Ivanov, Valentin D.
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Jehin, E.
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Jermak, Helen E.
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Johnston, Steve
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Kafka, S.
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Kalup, Csilla
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Kardasis, Emmanuel
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Kaspi, Shai
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Kennedy, Grant M.
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Kiefer, F.
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Kielty, C. L.
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Kessler, Dennis
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Kiiskinen, H.
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Killestein, T. L.
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King, Ronald A.
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Kollar, V.
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Korhonen, H.
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Kotnik, C.
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Könyves-Tóth, Réka
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Kriskovics, Levente
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Krumm, Nathan
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Krushinsky, Vadim
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Kundra, E.
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Lachapelle, Francois-Rene
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LaCourse, D.
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Lake, P.
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Lam, Kristine
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Lamb, Gavin P.
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Lane, Dave
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Lau, Marie Wingyee
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Lewin, Pablo
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Lintott, Chris
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Lisse, Carey
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Logie, Ludwig
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Longeard, Nicolas
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Lopez Villanueva, M.
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Whit Ludington, E.
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Mainzer, A.
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Malo, Lison
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Maloney, Chris
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Mann, A.
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Mantero, A.
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Marengo, Massimo
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Marchant, Jon
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Martínez González, M. J.
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Masiero, Joseph R.
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Mauerhan, Jon C.
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McCormac, James
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McNeely, Aaron
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Meng, Huan Y. A.
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Miller, Mike
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Molnar, Lawrence A.
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Morales, J. C.
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Morris, Brett M.
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Muterspaugh, Matthew W.
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Nespral, David
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Nugent, C. R.
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Nugent, Katherine M.
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Odasso, A.
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O'Keeffe, Derek
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Oksanen, A.
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O'Meara, John M.
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Ordasi, András
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Osborn, Hugh
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Ott, John J.
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Parks, J. R.
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Rodriguez Perez, Diego
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Petriew, Vance
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Pickard, R.
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Pál, András
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Plavchan, P.
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Pollacco, Don
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Pozo Nuñez, F.
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Pozuelos, F. J.
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Rau, Steve
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Redfield, Seth
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Relles, Howard
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Ribas, Ignasi
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Richards, Jon
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Saario, Joonas L. O.
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Safron, Emily J.
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Sallai, J. Martin
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Sárneczky, Krisztián
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Schaefer, Bradley E.
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Schumer, Clea F.
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Schwartzendruber, Madison
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Siegel, Michael H.
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Siemion, Andrew P. V.
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Simmons, Brooke D.
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Simon, Joshua D.
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Simón-Díaz, S.
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Sitko, Michael L.
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Socas-Navarro, Hector
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Sódor, Á.
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Starkey, Donn
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Steele, Iain A.
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Stone, Geoff
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Strassmeier, Klaus G.
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Street, R. A.
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Sullivan, Tricia
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Suomela, J.
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Swift, J. J.
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Szabó, Gyula M.
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Szabó, Róbert
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Szakáts, Róbert
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Szalai, Tamás
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Tanner, Angelle M.
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Toledo-Padrón, B.
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Tordai, Tamás
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Triaud, Amaury H. M. J.
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Turner, Jake D.
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Ulowetz, Joseph H.
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Urbanik, Marian
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Vanaverbeke, Siegfried
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Vanderburg, Andrew
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Vida, Krisztián
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Vietje, Brad P.
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Vinkó, József
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von Braun, K.
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Waagen, Elizabeth O.
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Walsh, Dan
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Watson, Christopher A.
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Weir, R. C.
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Wenzel, Klaus
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Westendorp Plaza, C.
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Williamson, Michael W.
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Wright, Jason T.
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Wyatt, M. C.
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Zheng, WeiKang
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Zsidi, Gabriella
Abstract
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We present a photometric detection of the first brightness dips of the unique variable star KIC 8462852 since the end of the Kepler space mission in 2013 May. Our regular photometric surveillance started in 2015 October, and a sequence of dipping began in 2017 May continuing on through the end of 2017, when the star was no longer visible from Earth. We distinguish four main 1%-2.5% dips, named “Elsie,” “Celeste,” “Skara Brae,” and “Angkor,” which persist on timescales from several days to weeks. Our main results so far are as follows: (i) there are no apparent changes of the stellar spectrum or polarization during the dips and (ii) the multiband photometry of the dips shows differential reddening favoring non-gray extinction. Therefore, our data are inconsistent with dip models that invoke optically thick material, but rather they are in-line with predictions for an occulter consisting primarily of ordinary dust, where much of the material must be optically thin with a size scale ≪1 μm, and may also be consistent with models invoking variations intrinsic to the stellar photosphere. Notably, our data do not place constraints on the color of the longer-term “secular” dimming, which may be caused by independent processes, or probe different regimes of a single process.
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