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A super-Jupiter orbiting a late-type star: a refined analysis of microlensing event OGLE-2012-BLG-0406

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posted on 2023-05-18, 05:55 authored by Tsapras, Y, Choi, J-H, Street, RA, Han, C, Bozza, V, Gould, A, Dominik, M, Beaulieu, J-P, Udalski, A, Jorgensen, UG, Sumi, T, Bramich, DM, Browne, P, Horne, K, Hundertmark, M, Ipatov, S, Kains, N, Snodgrass, C, Steele, IA, Alsubai, KA, Andersen, JM, Novati, SC, Damerdji, Y, Diehl, C, Elyiv, A, Giannini, E, Hardis, S, Harpsoe, K, Hinse, TC, Juncher, D, Kerins, E, Korhonen, H, Liebig, C, Mancini, L, Mathiasen, M, Penny, MT, Rabus, M, Rahvar, S, Scarpetta, G, Skottfelt, J, Southworth, J, Surdej, J, Tregloan-Reed, J, Vilela, C, Wambsganss, J, Skowron, J, Poleski, R, Kozlowski, S, Wyrzykowski, E, Szymanski, MK, Kubiak, M, Pietrukowicz, P, Pietrzynski, G, Soszynski, I, Ulaczyk, K, Albrow, MD, Bachelet, E, Barry, R, Batista, V, Bhattacharya, A, Brillant, S, Caldwell, JAR, Cassan, A, Andrew ColeAndrew Cole, Corrales, E, Coutures, C, Dieters, S, Dominis Prester, D, Donatowicz, J, Fouque, P, Greenhill, J, Kane, SR, Kubas, D, Marquette, J-B, Menzies, J, Pere, C, Pollard, KR, Zub, M, Christie, G, DePoy, DL, Dong, S, Drummond, J, Gaudi, BS, Henderson, CB, Hwang, KH, Jung, YK, Kavka, A, Koo, J-R, Lee, C-U, Maoz, D, Monard, LAG, Natusch, T, Ngan, H, Park, H, Pogge, RW, Porritt, I, Shin, I-G, Shvartzvald, Y, Tan, TG, Yee, JC, Abe, F, Bennett, DP, Bond, IA, Botzler, CS, Freeman, M, Fukui, A, Fukunaga, D, Itow, Y, Koshimoto, N, Ling, CH, Masuda, K, Matsubara, Y, Muraki, Y, Namba, S, Ohnishi, K, Rattenbury, NJ, Saito, T, Sullivan, DJ, Sweatman, WL, Suzuki, D, Tristram, PJ, Tsurumi, N, Wada, K, Yamai, N, Yock, PCM, Yonehara, A
We present a detailed analysis of survey and follow-up observations of microlensing event OGLE-2012-BLG-0406 based on data obtained from 10 different observatories. Intensive coverage of the light curve, especially the perturbation part, allowed us to accurately measure the parallax effect and lens orbital motion. Combining our measurement of the lens parallax with the angular Einstein radius determined from finite-source effects, we estimate the physical parameters of the lens system. We find that the event was caused by a 2.73 ± 0.43 MJ planet orbiting a 0.44 ± 0.07 M early M-type star. The distance to the lens is 4.97 ± 0.29 kpc and the projected separation between the host star and its planet at the time of the event is 3.45 ± 0.26 AU. We find that the additional coverage provided by follow-up observations, especially during the planetary perturbation, leads to a more accurate determination of the physical parameters of the lens.

History

Publication title

The Astrophysical Journal

Volume

782

Article number

48

Number

48

Pagination

1-9

ISSN

0004-637X

Department/School

School of Natural Sciences

Publisher

Univ Chicago Press

Place of publication

1427 E 60Th St, Chicago, USA, Il, 60637-2954

Rights statement

COpyright 2014 The American Astronomical Society

Repository Status

  • Open

Socio-economic Objectives

Expanding knowledge in the physical sciences

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