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Browsing by Author "Choi, J. -Y"

Browsing by Author "Choi, J. -Y"

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  • Mass Measurements of Isolated Objects from Space-based Microlensing 
    Zhu, Wei; Calchi Novati, S.; Gould, A.; Udalski, A.; Han, C.; Shvartzvald, Y.; Ranc, C.; Jørgensen, U. G.; Poleski, R.; Bozza, V.; Beichman, C.; Bryden, G.; Carey, S.; Gaudi, B. S.; Henderson, C. B.; Pogge, R. W.; Porritt, I.; Wibking, B.; Yee, Jennifer C.; SPITZER Team; Pawlak, M.; Szymanski, M. K.; Skowron, J.; Mróz, P.; Kozlowski, S.; Wyrzykowski, L.; Pietrukowicz, P.; Pietrzynski, G.; Soszynski, I.; Ulaczyk, K.; OGLE Group; Choi, J. -Y; Park, H.; Jung, Y. K.; Shin, I. -G; Albrow, M. D.; Park, B. -G; Kim, S. -L; Lee, C. -U; Cha, S. -M; Kim, D. -J; Lee, Y.; KMTNET Group; Friedmann, M.; Kaspi, S.; Maoz, D.; WISE Group; Hundertmark, M.; Street, R. A.; Tsapras, Y.; Bramich, D. M.; Cassan, A.; Dominik, M.; Bachelet, E.; Dong, Subo; Figuera Jaimes, R.; Horne, K.; Mao, S.; Menzies, J.; Schmidt, R.; Snodgrass, C.; Steele, I. A.; Wambsganss, J.; RoboNeT Team; Skottfelt, J.; Andersen, M. I.; Burgdorf, M. J.; Ciceri, S.; D'Ago, G.; Evans, D. F.; Gu, S. -H; Hinse, T. C.; Kerins, E.; Korhonen, H.; Kuffmeier, M.; Mancini, L.; Peixinho, N.; Popovas, A.; Rabus, M.; Rahvar, S.; Tronsgaard, R.; Scarpetta, G.; Southworth, J.; Surdej, J.; von Essen, C.; Wang, Y. -B; Wertz, O.; MiNDSTEP Group (2016)
    We report on the mass and distance measurements of two single-lens events from the 2015 Spitzer microlensing campaign. With both finite-source effect and microlens parallax measurements, we find that the lens of ...
  • Reanalyses of Anomalous Gravitational Microlensing Events in the OGLE-III Early Warning System Database with Combined Data 
    Jeong, J.; Park, H.; Han, C.; Gould, A.; Udalski, A.; Szymanski, M. K.; Pietrzynski, G.; Soszynski, I.; Poleski, R.; Ulaczyk, K.; Wyrzykowski, L.; OGLE Collaboration; Abe, F.; Bennett, D. P.; Bond, I. A.; Botzler, C. S.; Freeman, M.; Fukui, A.; Fukunaga, D.; Itow, Y.; Koshimoto, N.; Masuda, K.; Matsubara, Y.; Muraki, Y.; Namba, S.; Ohnishi, K.; Rattenbury, N. J.; Saito, To; Sullivan, D. J.; Sweatman, W. L.; Sumi, T.; Suzuki, D.; Tristram, P. J.; Tsurumi, N.; Wada, K.; Yamai, N.; Yock, P. C. M.; Yonehara, A.; MOA Collaboration; Albrow, M. D.; Batista, V.; Beaulieu, J. -P; Caldwell, J. A. R.; Cassan, A.; Cole, A.; Coutures, C.; Dieters, S.; Dominik, M.; Dominis Prester, D.; Donatowicz, J.; Fouqué, P.; Greenhill, J.; Hoffman, M.; Huber, M.; Jørgensen, U. G.; Kane, S. R.; Kubas, D.; Martin, R.; Marquette, J. -B; Menzies, J.; Pitrou, C.; Pollard, K.; Sahu, K. C.; Vinter, C.; Wambsganss, J.; Williams, A.; PLANET Collaboration; Allen, W.; Bolt, G.; Choi, J. -Y; Christie, G. W.; DePoy, D. L.; Drummond, J.; Gaudi, B. S.; Hwang, K. -H; Jung, Y. K.; Lee, C. -U; Mallia, F.; Maoz, D.; Maury, A.; McCormick, J.; Monard, L. A. G.; Moorhouse, D.; Natusch, T.; Ofek, E. O.; Park, B. -G; Pogge, R. W.; Santallo, R.; Shin, I. -G; Thornley, G.; Yee, Jennifer C.; The µFUN Collaboration; Bramich, D. M.; Burgdorf, M.; Horne, K.; Hundertmark, M.; Kains, N.; Snodgrass, C.; Steele, I.; Street, R.; Tsapras, Y.; RoboNet Collaboration (2015)
    We reanalyze microlensing events in the published list of anomalous events that were observed from the Optical Gravitational Lensing Experiment (OGLE) lensing survey conducted during the 2004–2008 period. In order to check ...
  • Spitzer Microlens Measurement of a Massive Remnant in a Well-separated Binary 
    Shvartzvald, Y.; Udalski, A.; Gould, A.; Han, C.; Bozza, V.; Friedmann, M.; Hundertmark, M.; Beichman, C.; Bryden, G.; Calchi Novati, S.; Carey, S.; Fausnaugh, M.; Gaudi, B. S.; Henderson, C. B.; Kerr, T.; Pogge, R. W.; Varricatt, W.; Wibking, B.; Yee, Jennifer C.; Zhu, W.; Spitzer team; Poleski, R.; Pawlak, M.; Szymanski, M. K.; Skowron, J.; Mróz, P.; Kozlowski, S.; Wyrzykowski, L.; Pietrukowicz, P.; Pietrzynski, G.; Soszynski, I.; Ulaczyk, K.; OGLE group; Choi, J. -Y; Park, H.; Jung, Y. K.; Shin, I. -G; Albrow, M. D.; Park, B. -G; Kim, S. -L; Lee, C. -U; Cha, S. -M; Kim, D. -J; Lee, Y.; KMTNet group; Maoz, D.; Kaspi, S.; Wise group; Street, R. A.; Tsapras, Y.; Bachelet, E.; Dominik, M.; Bramich, D. M.; Horne, Keith; Snodgrass, C.; Steele, I. A.; Menzies, J.; Figuera Jaimes, R.; Wambsganss, J.; Schmidt, R.; Cassan, A.; Ranc, C.; Mao, S.; Dong, Subo; RoboNet; D'Ago, G.; Scarpetta, G.; Verma, P.; Jørgensen, U. G.; Kerins, E.; Skottfelt, J.; MiNDSTEp (2015)
    We report the detection and mass measurement of a binary lens OGLE-2015-BLG-1285La,b, with the more massive component having M<SUB>1</SUB> &gt; 1.35 M<SUB>?</SUB> (80% probability). A main-sequence star in this mass range ...
  • Spitzer Observations of OGLE-2015-BLG-1212 Reveal a New Path toward Breaking Strong Microlens Degeneracies 
    Bozza, V.; Shvartzvald, Y.; Udalski, A.; Calchi Novati, S.; Bond, I. A.; Han, C.; Hundertmark, M.; Poleski, R.; Pawlak, M.; Szymanski, M. K.; Skowron, J.; Mróz, P.; Kozlowski, S.; Wyrzykowski, L.; Pietrukowicz, P.; Soszynski, I.; Ulaczyk, K.; OGLE Group; Beichman, C.; Bryden, G.; Carey, S.; Fausnaugh, M.; Gaudi, B. S.; Gould, A.; Henderson, C. B.; Pogge, R. W.; Wibking, B.; Yee, Jennifer C.; Zhu, W.; Spitzer Team; Abe, F.; Asakura, Y.; Barry, R. K.; Bennett, D. P.; Bhattacharya, A.; Donachie, M.; Freeman, M.; Fukui, A.; Hirao, Y.; Inayama, K.; Itow, Y.; Koshimoto, N.; Li, M. C. A.; Ling, C. H.; Masuda, K.; Matsubara, Y.; Muraki, Y.; Nagakane, M.; Nishioka, T.; Ohnishi, K.; Oyokawa, H.; Rattenbury, N.; Saito, To; Sharan, A.; Sullivan, D. J.; Sumi, T.; Suzuki, D.; Tristram, P. J.; Wakiyama, Y.; Yonehara, A.; MOA Group; Choi, J. -Y; Park, H.; Jung, Y. K.; Shin, I. -G; Albrow, M. D.; Park, B. -G; Kim, S. -L; Lee, C. -U; Cha, S. -M; Kim, D. -J; Lee, Y.; KMTNet Group; Dominik, M.; Jørgensen, U. G.; Andersen, M. I.; Bramich, D. M.; Burgdorf, M. J.; Ciceri, S.; D'Ago, G.; Evans, D. F.; Figuera Jaimes, R.; Gu, S. -H; Hinse, T. C.; Kains, N.; Kerins, E.; Korhonen, H.; Kuffmeier, M.; Mancini, L.; Popovas, A.; Rabus, M.; Rahvar, S.; Rasmussen, R. T.; Scarpetta, G.; Skottfelt, J.; Snodgrass, C.; Southworth, J.; Surdej, J.; Unda-Sanzana, E.; von Essen, C.; Wang, Y. -B; Wertz, O.; MiNDSTEp; Maoz, D.; Friedmann, M.; Kaspi, S.; Wise Group (2016)
    Spitzer microlensing parallax observations of OGLE-2015-BLG-1212 decisively break a degeneracy between planetary and binary solutions that is somewhat ambiguous when only ground-based data are considered. Only eight viable ...
  • Spitzer Parallax of OGLE-2015-BLG-0966: A Cold Neptune in the Galactic Disk 
    Street, R. A.; Udalski, A.; Calchi Novati, S.; Hundertmark, M. P. G.; Zhu, W.; Gould, A.; Yee, J.; Tsapras, Y.; Bennett, D. P.; RoboNet Project, The; Consortium, MiNDSTEp; Jørgensen, U. G.; Dominik, M.; Andersen, M. I.; Bachelet, E.; Bozza, V.; Bramich, D. M.; Burgdorf, M. J.; Cassan, A.; Ciceri, S.; D'Ago, G.; Dong, Subo; Evans, D. F.; Gu, Sheng-hong; Harkonnen, H.; Hinse, T. C.; Horne, Keith; Figuera Jaimes, R.; Kains, N.; Kerins, E.; Korhonen, H.; Kuffmeier, M.; Mancini, L.; Menzies, J.; Mao, S.; Peixinho, N.; Popovas, A.; Rabus, M.; Rahvar, S.; Ranc, C.; Tronsgaard Rasmussen, R.; Scarpetta, G.; Schmidt, R.; Skottfelt, J.; Snodgrass, C.; Southworth, J.; Steele, I. A.; Surdej, J.; Unda-Sanzana, E.; Verma, P.; von Essen, C.; Wambsganss, J.; Wang, Yi-Bo; Wertz, O.; OGLE Project, The; Poleski, R.; Pawlak, M.; Szymanski, M. K.; Skowron, J.; Mróz, P.; Kozlowski, S.; Wyrzykowski, L.; Pietrukowicz, P.; Pietrzynski, G.; Soszynski, I.; Ulaczyk, K.; Spitzer Team; Beichman, C.; Bryden, G.; Carey, S.; Gaudi, B. S.; Henderson, C. B.; Pogge, R. W.; Shvartzvald, Y.; The MOA Collaboration; Abe, F.; Asakura, Y.; Bhattacharya, A.; Bond, I. A.; Donachie, M.; Freeman, M.; Fukui, A.; Hirao, Y.; Inayama, K.; Itow, Y.; Koshimoto, N.; Li, M. C. A.; Ling, C. H.; Masuda, K.; Matsubara, Y.; Muraki, Y.; Nagakane, M.; Nishioka, T.; Ohnishi, K.; Oyokawa, H.; Rattenbury, N.; Saito, To; Sharan, A.; Sullivan, D. J.; Sumi, T.; Suzuki, D.; Tristram, J.; Wakiyama, Y.; Yonehara, A.; KMTNet Modeling Team; Han, C.; Choi, J. -Y; Park, H.; Jung, Y. K.; Shin, I. -G (2016)
    We report the detection of a cold Neptune m<SUB>planet</SUB> = 21 ± 2 M<SUB>?</SUB> orbiting a 0.38 M<SUB>?</SUB> M dwarf lying 2.5-3.3 kpc toward the Galactic center as part of a campaign combining ground-based and Spitzer ...
  • A Super-Jupiter Microlens Planet Characterized by High-Cadence KMTNeT Micorlensing Survey Observations of OGLE-2015-BLG-0954 
    Shin, I. -G; Ryu, Y. -H; Udalski, A.; Albrow, M.; Cha, S. -M; Choi, J. -Y; Chung, S. -J; Han, C.; Hwang, K. -H; Jung, Y. K.; Kim, D. -J; Kim, S. -L; Lee, C. -U; Lee, Y.; Park, B. -G; Park, H.; Pogge, R. W.; Yee, J. C.; Pietrukowicz, P.; Mroz, P.; Kozlowski, S.; Poleski, R.; Skowron, J.; Soszynski, I.; Szymanski, M. K.; Ulaczyk, K.; Wyrzykowski, L.; Pawlak, M.; Gould, A. (2016)
    We report the characterization of a massive (m_p=3.9 +- 1.4 M_jup) microlensing planet (OGLE-2015-BLG-0954Lb) orbiting an M dwarf host (M=0.33 +- 0.12 M_sun) at a distance toward the Galactic bulge of 0.6 (+0.4,-0.2) kpc, ...

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