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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

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MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection

Autor: Yee, J. C., Hung, L. -W., Bond, I. A., Allen, W., Monard, L. A. G., Albrow, M. D., Fouque, P., Dominik, M., Tsapras, Y., Udalski, A., Gould, A., Zellem, R., Bos, M., Christie, G. W., DePoy, D. L., Dong, Subo, Drummond, J., Gaudi, B. S., 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, R. W., Polishook, D., Shporer, A., Shvartzvald, Y., Skowron, J., Thornley, G., Abe, F., Bennett, D. P., Botzler, C. S., Chote, P., Freeman, M., Fukui, A., Furusawa, K., Harris, P., Itow, Y., Ling, C. H., Masuda, K., Matsubara, Y., Miyake, N., Ohnishi, K., Rattenbury, N. J., Saito, To., Sullivan, D. J., Sumi, T., Suzuki, D., Sweatman, W. L., Tristram, P. J., Wada, K., Yock, P. C. M., Szymanski, M. K., Soszynski, I., Kubiak, M., Poleski, R., Ulaczyk, K., Pietrzynski, G., Wyrzykowski, L., Bachelet, E., Batista, V., Beatty, T. G., Beaulieu, J. -P., Bennett, C. S., Bowens-Rubin, R., Brillant, S., Caldwell, J. A. R., Cassan, A., Cole, A. A., Corrales, E., Coutures, C., Dieters, S., Prester, D. Dominis, Donatowicz, J., Greenhill, J., Henderson, C. B., Kubas, D., Marquette, J. -B., Martin, R., Menzies, J. W., Shappee, B., Williams, A., Wouters, D., van Saders, J., Zub, M., Street, R. A., Horne, K., Bramich, D. M., Steele, I. A., Alsubai, K. A., Bozza, V., Browne, P., Burgdorf, M. J., Novati, S. Calchi, Dodds, P., Finet, F., Gerner, T., Hardis, S., Harpsoe, K., Hessman, F. V., Hinse, T. C., Hundertmark, M., Jorgensen, U. G., Kains, N., Kerins, E., Liebig, C., Mancini, L., Mathiasen, M., Penny, M. T., Proft, S., Rahvar, S., Ricci, D., Sahu, K. C., Scarpetta, G., Schafer, S., Schonebeck, F., Snodgrass, C., Southworth, J., Surdej, J., Wambsgans, J.

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 2-body lens model and find that

Externí odkaz: http://arxiv.org/abs/1210.6041

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MOA-2010-BLG-523: 'Failed Planet' = RS CVn Star

Autor: Gould, A., Yee, J. C., Bond, I. A., Udalski, A., Han, C., Jorgensen, U. G., Greenhill, J., Tsapras, Y., Pinsonneault, M. H., Bensby, T., Allen, W., Almeida, L. A., Bos, M., Christie, G. W., DePoy, D. L., Dong, Subo, Gaudi, B. S., Hung, L. -W., Jablonski, F., Lee, C. -U., McCormick, J., Moorhouse, D., Munoz, J. A., Natusch, T., Nola, M., Pogge, R. W., Skowron, J., Thornley, G., Abe, F., Bennett, D. P., Botzler, C. S., Chote, P., Freeman, M., Fukui, A., Furusawa, K., Harris, P., Itow, Y., Ling, C. H., Masuda, K., Matsubara, Y., Miyake, N., Ohnishi, K., Rattenbury, N. J., Saito, To., Sullivan, D. J., Sumi, T., Suzuki, D., Sweatman, W. L., Tristram, P. J., Wada, K., Yock, P. C. M., Szymanski, M. K., Soszynski, I., Kubiak, M., Poleski, R., Ulaczyk, K., Pietrzynski, G., Wyrzykowski, L., Alsubai, K. A., Bozza, V., Browne, P., Burgdorf, M. J., Novati, S. Calchi, Dodds, P., Dominik, M., Finet, F., Gerner, T., Hardis, S., Harpsoe, K., Hessman, F. V., Hinse, T. C., Hundertmark, M., Kains, N., Kerins, E., Liebig, C., Mancini, L., Mathiasen, M., Penny, M. T., Proft, S., Rahvar, S., Ricci, D., Sahu, K. C., Scarpetta, G., Schafer, S., Schonebeck, F., Snodgrass, C., Southworth, J., Surdej, J., Wambsganss, J., Street, R. A., Horne, K., Bramich, D. M., Steele, I. A., Albrow, M. D., Bachelet, E., Batista, V., Beatty, T. G., Beaulieu, J. -P., Bennett, C. S., Bowens-Rubin, R., Brillant, S., Caldwell, J. A. R., Cassan, A., Cole, A. A., Corrales, E., Coutures, C., Dieters, S., Prester, D. Dominis, Donatowicz, J., Fouque, P., Henderson, C. B., Kubas, D., Marquette, J. -B, Martin, R., Menzies, J. W., Shappee, B., Williams, A., van Saders, J., Zub, M.

The Galactic bulge source MOA-2010-BLG-523S exhibited short-term deviations from a standard microlensing lightcurve near the peak of an Amax ~ 265 high-magnification microlensing event. The deviations originally seemed consistent with expectations fo

Externí odkaz: http://arxiv.org/abs/1210.6045

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A much lower density for the transiting extrasolar planet WASP-7

We present the first high-precision photometry of the transiting extrasolar planetary system WASP-7, obtained using telescope defocussing techniques and reaching a scatter of 0.68 mmag per point. We find that the transit depth is greater and that the

Externí odkaz: http://arxiv.org/abs/1012.5181

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Magnetic Anisotropy of Co2+ as Signature of Intrinsic Ferromagnetism in ZnO:Co

Autor: Sati, P., Hayn, R., Kuzian, R., Regnier, S., Schafer, S., Stepanov, A., Morhain, C., Deparis, C., Laugt, M., Goiran, M., Golacki, Z.

Publikováno v: Phys. Rev. Lett. 96, 017203 (2006)

We report on the magnetic properties of thoroughly characterized Zn1-xCoxO epitaxial thin films, with low Co concentration, x=0.003-0.005. Magnetic and EPR measurements, combined with crystal field theory, reveal that isolated Co2+ ions in ZnO posses

Externí odkaz: http://arxiv.org/abs/cond-mat/0702410

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Antiferromagnetic interactions in single crystalline Zn1-xCoxO thin films

Autor: Sati, P., Deparis, C., Morhain, C., Schafer, S., Stepanov, A.

In a rather contradictory situation regarding magnetic data on Co-doped ZnO, we have succeeded in fabricating high-quality single crystalline Zn1-xCoxO (x=0.003-0.07) thin films. This gives us the possibility, for the first time, to examine the it in

Externí odkaz: http://arxiv.org/abs/cond-mat/0702402

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