The First Planetary Microlensing Event with Two Microlensed Source Stars

Autor: Bennett, D. P., Udalski, A., Han, C., Bond, I. A., Beaulieu, J. -P., Skowron, J., Gaudi, B. S., Koshimoto, N., Abe, F., Asakura, Y., Barry, R. K., Bhattacharya, A., Donachie, M., Evans, P., Fukui, A., Hirao, Y., Itow, Y., Li, M. C. A., Ling, C. H., Masuda, K., Matsubara, Y., Muraki, Y., Nagakane, M., Ohnishi, K., Oyokawa, H., Ranc, C., Rattenbury, N. J., Rosenthal, M. K., Saito, To., Sharan, A., Sullivan, D. J., Sumi, T., Suzuki, D., Tristram, P. J., Yonehara, A., Szymanski, M. K., Poleski, R., Soszynski, I., Ulaczyk, K., Wyrzykowski, L., DePoy, D., Gould, A., Pogge, R. W., Yee, J. C., Albrow, M. D., Bachelet, E., Batista, V., Bowens-Rubin, R., Brillant, S., Caldwell, J. A. R., Cole, A., Coutures, C., Dieters, S., Prester, D. Dominis, Donatowicz, J., Fouque, P., Horne, K., Hundertmark, M., Kains, N., Kane, S. R., Marquette, J. -B., Menzies, J., Pollard, K. R., Sahu, K. C., Wambsganss, J., Williams, A., Zub, M.

Publikováno v: AJ, 155, 141 (2018)

We present the analysis of microlensing event MOA-2010-BLG-117, and show that the light curve can only be explained by the gravitational lensing of a binary source star system by a star with a Jupiter mass ratio planet. It was necessary to modify sta

Externí odkaz: http://arxiv.org/abs/1707.09667

MOA-2007-BLG-197: Exploring the brown dwarf desert

Autor: Ranc, C., Cassan, A., Albrow, M. D., Kubas, D., Bond, I. A., Batista, V., Beaulieu, J. -P., Bennett, D. P., Dominik, M., Dong, Subo, Fouqué, P., Gould, A., Greenhill, J., Jørgensen, U. G., Kains, N., Menzies, J., Sumi, T., Bachelet, E., Coutures, C., Dieters, S., Prester, D. Dominis, Donatowicz, J., Gaudi, B. S., Han, C., Hundertmark, M., Horne, K., Kane, S. R., Lee, C. -U., Marquette, J. -B., Park, B. -G., Pollard, K. R., Sahu, K. C., Street, R., Tsapras, Y., Wambsganss, J., Williams, A., Zub, M., Abe, F., Fukui, A., Itow, Y., Masuda, K., Matsubara, Y., Muraki, Y., Ohnishi, K., Rattenbury, N., Saito, To., Sullivan, D. J., Sweatman, W. L., Tristram, P. J., Yock, P. C. M., Yonehara, A.

Publikováno v: A&A 580, A125 (2015)

We present the analysis of MOA-2007-BLG-197Lb, the first brown dwarf companion to a Sun-like star detected through gravitational microlensing. The event was alerted and followed-up photometrically by a network of telescopes from the PLANET, MOA, and

Externí odkaz: http://arxiv.org/abs/1505.06037

Gravitational Binary-lens Events with Prominent Effects of Lens Orbital Motion

Autor: Park, H., Udalski, A., Han, C., Gould, A., Beaulieu, J. -P., Tsapras, Y., Szymański, M. K., Kubiak, M., Soszyński, I., Pietrzyński, G., Poleski, R., Ulaczyk, K., Pietrukowicz, P., Kozłowski, S., Skowron, J., Wyrzykowski, Ł., Choi, J. -Y., Depoy, D. L., Dong, Subo, Gaudi, B. S., Hwang, K. -H., Jung, Y. K., Kavka, A., Lee, C. -U., Monard, L. A. G., Park, B. -G., Pogge, R. W., Porritt, I., Shin, I. -G., Yee, J. C., Albrow, M. D., Bennett, D. P., Caldwell, J. A. R., Cassan, A., Coutures, C., Dominis, D., Donatowicz, J., Fouqué, P., Greenhill, J., Huber, M., Jørgensen, U. G., Kane, S., Kubas, D., Marquette, J. -B., Menzies, J., Pitrou, C., Pollard, K. R., Sahu, K. C., Wambsganss, J., Williams, A., Zub, M., Allan, A., Bramich, D. M., Browne, P., Dominik, M., Horne, K., Hundertmark, M., Kains, N., Snodgrass, C., Steele, I. A., Street, R. A.

Gravitational microlensing events produced by lenses composed of binary masses are important because they provide a major channel to determine physical parameters of lenses. In this work, we analyze the light curves of two binary-lens events OGLE-200

Externí odkaz: http://arxiv.org/abs/1306.3744

Microlensing Discovery of a Population of Very Tight, Very Low-mass Binary Brown Dwarfs

Autor: Choi, J. -Y., Han, C., Udalski, A., Sumi, T., Gaudi, B. S., Gould, A., Bennett, D. P., Dominik, M., Beaulieu, J. -P., Tsapras, Y., Bozza, V., Abe, F., Bond, I. A., Botzler, C. S., Chote, P., Freeman, M., Fukui, A., Furusawa, K., Itow, Y., Ling, C. H., Masuda, K., Matsubara, Y., Miyake, N., Muraki, Y., Ohnishi, K., Rattenbury, N. J., Saito, To., Sullivan, D. J., Suzuki, K., Sweatman, W. L., Suzuki, D., Takino, S., Tristram, P. J., Wada, K., Yock, P. C. M., Szymański, M. K., Kubiak, M., Pietrzyński, G., Soszyński, I., Skowron, J., Kozłowski, S., Poleski, R., Ulaczyk, K., Wyrzykowski, Ł., Pietrukowicz, P., Almeida, L. A., DePoy, D. L., Dong, Subo, Gorbikov, E., Jablonski, F., Henderson, C. B., Hwang, K. -H., Janczak, J., Jung, Y. -K., Kaspi, S., Lee, C. -U., Malamud, U., Maoz, D., McGregor, D., Munoz, J. A., Park, B. -G., Park, H., Pogge, R. W., Shvartzvald, Y., Shin, I. -G., Yee, J. C., Alsubai, K. A., Browne, P., Burgdorf, M. J., Novati, S. Calchi, Dodds, P., Fang, X. -S., Finet, F., Glitrup, M., Grundahl, F., Gu, S. -H., Hardis, S., Harpsøe, K., Hinse, T. C., Hornstrup, A., Hundertmark, M., Jessen-Hansen, J., Jørgensen, U. G., Kains, N., Kerins, E., Liebig, C., Lund, M. N., Lundkvist, M., Maier, G., Mancini, L., Mathiasen, M., Penny, M. T., Rahvar, S., Ricci, D., Scarpetta, G., Skottfelt, J., Snodgrass, C., Southworth, J., Surdej, J., Tregloan-Reed, J., Wambsganss, J., Wertz, O., Zimmer, F., Albrow, M. D., Bachelet, E., Batista, V., Brillant, S., Cassan, A., Cole, A. A., Coutures, C., Dieters, S., Prester, D. Dominis, Donatowicz, J., Fouqué, P., Greenhill, J., Kubas, D., Marquette, J. -B., Menzies, J. W., Sahu, K. C., Zub, M., Bramich, D. M., Horne, K., Steele, I. A., Street, R. A.

Although many models have been proposed, the physical mechanisms responsible for the formation of low-mass brown dwarfs are poorly understood. The multiplicity properties and minimum mass of the brown-dwarf mass function provide critical empirical di

Externí odkaz: http://arxiv.org/abs/1302.4169

MOA-2010-BLG-073L: An M-Dwarf with a Substellar Companion at the Planet/Brown Dwarf Boundary

Autor: Street, R. A., Choi, J. -Y., Tsapras, Y., Han, C., Furusawa, K., Hundertmark, M., Gould, A., Sumi, T., Bond, I. A., Wouters, D., Zellem, R., Udalski, A., Snodgrass, C., Horne, K., Dominik, M., Browne, P., Kains, N., Bramich, D. M., Bajek, D., Steele, I. A., Ipatov, S., Abe, F., Bennett, D. P., Botzler, C. S., Chote, P., Freeman, M., Fukui, A., Harris, P., Itow, Y., Ling, C. H., Masuda, K., Matsubara, Y., Miyake, N., Muraki, Y., Nagayama, T., Nishimaya, S., Ohnishi, K., Rattenbury, N., Saito, To., Sullivan, D. J., Suzuki, D., Sweatman, W. L., Tristram, P. J., Wada, K., Yock, P. C. M., Szymanski, M. K., Kubiak, M., Pietrzynski, G., Soszynski, I., Poleski, R., Ulaczyk, K., Wyrzykowski, L., Yee, J., Dong, S., Shin, I. -G., Lee, C. -U., Skowron, J., De Almeida, L. Andrade, DePoy, D. L., Gaudi, B. S., Hung, L. -W., Jablonski, F., Kaspi, S., Klein, N., Hwang, K. -H., Koo, J. -R., Maoz, D., Munoz, J. A., Pogge, R. W., Polishhook, D., Shporer, A., McCormick, J., Christie, G., Natusch, T., Allen, B., Drummond, J., Moorhouse, D., Thornley, G., Knowler, M., Bos, M., Bolt, G., Beaulieu, J. -P., Albrow, M. D., Batista, V., Brillant, S., Caldwell, J. A. R., Cassan, A., Cole, A., Corrales, E., Coutures, Ch., Dieters, S., Prester, D. Dominis, Donatowicz, J., Fouque, P., Bachelet, E., Greenhill, J., Kane, S. R., Kubas, D., Marquette, J. -B., Martin, R., Menzies, J., Pollard, K. R., Sahu, K. C., Wambsganss, J., Williams, A., Zub, M., Alsubai, K. A., Bozza, V., Burgdorf, M. J., Novati, S. Calchi, Dodds, P., Dreizler, S., Finet, F., Gerner, T., Hardis, S., Harpsoe, K., Hessman, F., Hinse, T. C., Jorgensen, U. G., Kerins, E., Liebig, C., Mancini, L., Mathiasen, M., Penny, M. T., Proft, S., Rahvar, S., Ricci, D., Scarpetta, G., Schafer, S., Schonebeck, F., Southworth, J., Surdej, J.

We present an analysis of the anomalous microlensing event, MOA-2010-BLG-073, announced by the Microlensing Observations in Astrophysics survey on 2010-03-18. This event was remarkable because the source was previously known to be photometrically var

Externí odkaz: http://arxiv.org/abs/1211.3782