| Autor: |
D. Dominis Prester, P. Harris, M. Bos, G. W. Christie, J. A. R. Caldwell, Martin Burgdorf, Jack D. Drummond, David P. Bennett, Andrew A. Cole, David Polishook, M. Freeman, Luigi Mancini, Andrew Gould, Robert T. Zellem, Darren L. DePoy, D. Moorhouse, Yoshitaka Itow, M. Kubiak, K. Wada, C. Liebig, Daisuke Suzuki, Rachel Street, Arnaud Cassan, Eamonn Kerins, J. B. Marquette, Sohrab Rahvar, Davide Ricci, J. W. Menzies, Akihiko Fukui, Jean Surdej, P. Browne, Denis J. Sullivan, G. Thornley, Andrzej Udalski, Michał K. Szymański, C. S. Bennett, Thomas G. Beatty, R. Martin, Michael D. Albrow, C. S. Botzler, Philip Yock, Paul J. Tristram, Andrew Williams, T. Gerner, Iain A. Steele, Benjamin J. Shappee, Ian A. Bond, S. Dieters, R. Bowens-Rubin, D. M. Bramich, M. Zub, L. A. G. Monard, J. Wambsganß, Avi Shporer, Fumio Abe, D. Kubas, K. B. W. Harpsøe, Keith Horne, William H. Allen, Peter N. Dodds, Radosław Poleski, Tim Natusch, S. Hardis, P. Chote, F. V. Hessman, C. H. Ling, C.-U. Lee, N. Kains, Subo Dong, Sebastian Schafer, U. G. Jørgensen, J. van Saders, M. Hundertmark, Yiannis Tsapras, Grzegorz Pietrzyński, J. P. Beaulieu, Winston L. Sweatman, Igor Soszyński, Yossi Shvartzvald, P. Fouque, D. Wouters, François Finet, Evgeny Gorbikov, J. G. Greenhill, J. Donatowicz, Matthew T. Penny, Takahiro Sumi, C. Han, Kimiaki Masuda, M. Nola, Martin Dominik, E. Corrales, F. Schönebeck, N. Klein, Kouji Ohnishi, B. S. Gaudi, Calen B. Henderson, N. Miyake, Jennie McCormick, Colin Snodgrass, Gaetano Scarpetta, C. Coutures, Nicholas J. Rattenbury, Jan Skowron, Stephane Brillant, R. W. Pogge, Valerio Bozza, Shai Kaspi, K. Furusawa, D. Maoz, Yutaka Matsubara, Tobias C. Hinse, M. Mathiasen, Krzysztof Ulaczyk, V. Batista, Kailash C. Sahu, S. Proft, Byeong-Gon Park, L. Wyrzykowski, Li-Wei Hung, S. Calchi Novati, To. Saito, Jennifer C. Yee, Etienne Bachelet, Khalid Al-Subai, John Southworth |
| Přispěvatelé: |
Science & Technology Facilities Council, University of St Andrews. School of Physics and Astronomy |
| Jazyk: |
angličtina |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
The Astrophysical Journal
Artículos CONICYT
CONICYT Chile
instacron:CONICYT |
| Popis: |
We analyze MOA-2010-BLG-311, a high magnification (A_max>600) microlensing event with complete data coverage over the peak, making it very sensitive to planetary signals. We fit this event with both a point lens and a 2-body lens model and find that the 2-body lens model is a better fit but with only Delta chi^2~80. The preferred mass ratio between the lens star and its companion is $q=10^(-3.7+/-0.1), placing the candidate companion in the planetary regime. Despite the formal significance of the planet, we show that because of systematics in the data the evidence for a planetary companion to the lens is too tenuous to claim a secure detection. When combined with analyses of other high-magnification events, this event helps empirically define the threshold for reliable planet detection in high-magnification events, which remains an open question.
29 pages, 6 Figures, 3 Tables. For a brief video presentation on this paper, please see http://www.youtube.com/user/OSUAstronomy 10/25/2012 - Updated author list. Replaced 10/10/13 to reflect the version published in ApJ |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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