MOA-2010-BLG-311: A PLANETARY CANDIDATE BELOW THE THRESHOLD OF RELIABLE DETECTION Academic Article uri icon

abstract

  • 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 two-body lens model and find that the two-body lens model is a better fit but with only 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. 2013. The American Astronomical Society. All rights reserved.

published proceedings

  • ASTROPHYSICAL JOURNAL

altmetric score

  • 1.5

author list (cited authors)

  • Yee, J. C., Hung, L., Bond, I. A., Allen, W., Monard, L., Albrow, M. D., ... Wambsganss, J.

citation count

  • 17

complete list of authors

  • Yee, JC||Hung, L-W||Bond, IA||Allen, W||Monard, LAG||Albrow, MD||Fouque, P||Dominik, M||Tsapras, Y||Udalski, A||Gould, A||Zellem, R||Bos, M||Christie, GW||DePoy, DL||Dong, Subo||Drummond, J||Gaudi, BS||Gorbikov, E||Han, C||Kaspi, S||Klein, N||Lee, C-U||Maoz, D||McCormick, J||Moorhouse, D||Natusch, T||Nola, M||Park, B-G||Pogge, RW||Polishook, D||Shporer, A||Shvartzvald, Y||Skowron, J||Thornley, G||Abe, F||Bennett, DP||Botzler, CS||Chote, P||Freeman, M||Fukui, A||Furusawa, K||Harris, P||Itow, Y||Ling, CH||Masuda, K||Matsubara, Y||Miyake, N||Ohnishi, K||Rattenbury, NJ||Saito, To||Sullivan, DJ||Sumi, T||Suzuki, D||Sweatman, WL||Tristram, PJ||Wada, K||Yock, PCM||Szymanski, MK||Soszynski, I||Kubiak, M||Poleski, R||Ulaczyk, K||Pietrzynski, G||Wyrzykowski, L||Bachelet, E||Batista, V||Beatty, TG||Beaulieu, J-P||Bennett, CS||Bowens-Rubin, R||Brillant, S||Caldwell, JAR||Cassan, A||Cole, AA||Corrales, E||Coutures, C||Dieters, S||Prester, D Dominis||Donatowicz, J||Greenhill, J||Henderson, CB||Kubas, D||Marquette, J-B||Martin, R||Menzies, JW||Shappee, B||Williams, A||Wouters, D||van Saders, J||Zub, M||Street, RA||Horne, K||Bramich, DM||Steele, IA||Alsubai, KA||Bozza, V||Browne, P||Burgdorf, MJ||Novati, S Calchi||Dodds, P||Finet, F||Gerner, T||Hardis, S||Harpsoe, K||Hessman, FV||Hinse, TC||Hundertmark, M||Jorgensen, UG||Kains, N||Kerins, E||Liebig, C||Mancini, L||Mathiasen, M||Penny, MT||Proft, S||Rahvar, S||Ricci, D||Sahu, KC||Scarpetta, G||Schaefer, S||Schoenebeck, F||Snodgrass, C||Southworth, J||Surdej, J||Wambsganss, J

publication date

  • May 2013