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


Tsapras, Y and Choi, J-H and Street, RA and Han, C and Bozza, V and Gould, A and Dominik, M and Beaulieu, J-P and Udalski, A and Jorgensen, UG and Sumi, T and Bramich, DM and Browne, P and Horne, K and Hundertmark, M and Ipatov, S and Kains, N and Snodgrass, C and Steele, IA and Alsubai, KA and Andersen, JM and Novati, SC and Damerdji, Y and Diehl, C and Elyiv, A and Giannini, E and Hardis, S and Harpsoe, K and Hinse, TC and Juncher, D and Kerins, E and Korhonen, H and Liebig, C and Mancini, L and Mathiasen, M and Penny, MT and Rabus, M and Rahvar, S and Scarpetta, G and Skottfelt, J and Southworth, J and Surdej, J and Tregloan-Reed, J and Vilela, C and Wambsganss, J and Skowron, J and Poleski, R and Kozlowski, S and Wyrzykowski, E and Szymanski, MK and Kubiak, M and Pietrukowicz, P and Pietrzynski, G and Soszynski, I and Ulaczyk, K and Albrow, MD and Bachelet, E and Barry, R and Batista, V and Bhattacharya, A and Brillant, S and Caldwell, JAR and Cassan, A and Cole, A and Corrales, E and Coutures, C and Dieters, S and Dominis Prester, D and Donatowicz, J and Fouque, P and Greenhill, J and Kane, SR and Kubas, D and Marquette, J-B and Menzies, J and Pere, C and Pollard, KR and Zub, M and Christie, G and DePoy, DL and Dong, S and Drummond, J and Gaudi, BS and Henderson, CB and Hwang, KH and Jung, YK and Kavka, A and Koo, J-R and Lee, C-U and Maoz, D and Monard, LAG and Natusch, T and Ngan, H and Park, H and Pogge, RW and Porritt, I and Shin, I-G and Shvartzvald, Y and Tan, TG and Yee, JC and Abe, F and Bennett, DP and Bond, IA and Botzler, CS and Freeman, M and Fukui, A and Fukunaga, D and Itow, Y and Koshimoto, N and Ling, CH and Masuda, K and Matsubara, Y and Muraki, Y and Namba, S and Ohnishi, K and Rattenbury, NJ and Saito, T and Sullivan, DJ and Sweatman, WL and Suzuki, D and Tristram, PJ and Tsurumi, N and Wada, K and Yamai, N and Yock, PCM and Yonehara, A, A super-Jupiter orbiting a late-type star: a refined analysis of microlensing event OGLE-2012-BLG-0406, The Astrophysical Journal, 782, (1) Article 48. ISSN 0004-637X (2014) [Refereed Article]


Copyright Statement

COpyright 2014 The American Astronomical Society

DOI: doi:10.1088/0004-637X/782/1/48


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 2.730.43 MJ planet orbiting a 0.440.07 M early M-type star. The distance to the lens is 4.970.29 kpc and the projected separation between the host star and its planet at the time of the event is 3.450.26 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.

Item Details

Item Type:Refereed Article
Keywords:binary stars, gravitational microlensing, planetary systems
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Stellar astronomy and planetary systems
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Cole, A (Professor Andrew Cole)
ID Code:97403
Year Published:2014
Web of Science® Times Cited:18
Deposited By:Mathematics and Physics
Deposited On:2014-12-16
Last Modified:2017-11-06
Downloads:334 View Download Statistics

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