Faint source star planetary microlensing: the discovery of the cold gas giant planet OGLE-2014-BLG-0676Lb

Autor: Rattenbury, N. J., Bennett, D. P., Sumi, T., Koshimoto, N., Bond, I. A., Udalski, A., Shvartzvald, Y., Maoz, D., Jorgensen, U. G., Dominik, M., Street, R. A., Tsapras, Y., Abe, F., Asakura, Y., Barry, R., Bhattacharya, A., Donachie, M., Evans, P., Freeman, M., 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., Saito, To., Sharan, A., Sullivan, D. J., Suzuki, D., Tristram, P. J., Yonehara, A., Poleski, R., Skowron, J., Mroz, P., Szymanski, M. K., Soszynski, I., Pietrukowicz, P., Kozlowski, S., Ulaczyk, K., Wyrzykowski, L., Friedmann, M., Kaspi, S., Alsubai, K., Browne, P., Andersen, J. M., Bozza, V., Novati, S. Calchi, Damerdji, Y., Diehl, C., Dreizler, S., Elyiv, A., Giannini, E., Hardis, S., Harpsoe, K., Hinse, T. C., Liebig, C., Hundertmark, M., Juncher, D., Kains, N., Kerins, E., Korhonen, H., Mancini, L., Martin, R., Mathiasen, M., Rabus, M., Rahvar, S., Scarpetta, G., Skottfelt, J., Snodgrass, C., Surdej, J., Taylor, J., Tregloan-Reed, J., Vilela, C., Wambsganss, J., Williams, A., D'Ago, G., Bachelet, E., Bramich, D. M., Jaimes, R. Figuera, Horne, K., Menzies, J., Schmidt, R., Steele, I. A.

We report the discovery of a planet --- OGLE-2014-BLG-0676Lb --- via gravitational microlensing. Observations for the lensing event were made by the MOA, OGLE, Wise, RoboNET/LCOGT, MiNDSTEp and $\mu$FUN groups. All analyses of the light curve data fa

Externí odkaz: http://arxiv.org/abs/1612.03511

High-precision photometry by telescope defocussing. VIII. WASP-22, WASP-41, WASP-42 and WASP-55

Autor: Southworth, John, Tregloan-Reed, J., Andersen, M. I., Novati, S. Calchi, Ciceri, S., Colque, J. P., D'Ago, G., Dominik, M., Evans, D., Gu, S. -H., Herrera-Cruces, A., Hinse, T. C., Jorgensen, U. G., Juncher, D., Kuffmeier, M., Mancini, L., Peixinho, N., Popovas, A., Rabus, M., Skottfelt, J., Tronsgaard, R., Unda-Sanzana, E., Wang, X. -B., Wertz, O., Alsubai, K. A., Andersen, J. M., Bozza, V., Bramich, D. M., Burgdorf, M., Damerdji, Y., Diehl, C., Elyiv, A., Jaimes, R. Figuera, Haugbolle, T., Hundertmark, M., Kains, N., Kerins, E., Korhonen, H., Liebig, C., Mathiasen, M., Penny, M. T., Rahvar, S., Scarpetta, G., Schmidt, R. W., Snodgrass, C., Starkey, D., Surdej, J., Vilela, C., von Essen, C., Wang, Y.

Publikováno v: Monthly Notices of the Royal Astronomical Society 457 (2016), 4205-4217

We present 13 high-precision and four additional light curves of four bright southern-hemisphere transiting planetary systems: WASP-22, WASP-41, WASP-42 and WASP-55. In the cases of WASP-42 and WASP-55, these are the first follow-up observations sinc

Externí odkaz: http://arxiv.org/abs/1512.05549

Stellar activity as noise in exoplanet detection I. Methods and application to solar-like stars and activity cycles

Autor: Korhonen, H., Andersen, J. M., Piskunov, N., Hackman, T., Juncher, D., Jarvinen, S. P., Joergensen, U. G.

The detection of exoplanets using any method is prone to confusion due to the intrinsic variability of the host star. We investigate the effect of cool starspots on the detectability of the exoplanets around solar-like stars using the radial velocity

Externí odkaz: http://arxiv.org/abs/1501.00981

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

Autor: Tsapras, Y., Choi, J. -Y., Street, R. A., Han, C., Bozza, V., Gould, A., Dominik, M., Beaulieu, J. -P., Udalski, A., Jørgensen, U. G., Sumi, T., Bramich, D. M., Browne, P., Horne, K., Hundertmark, M., Ipatov, S., Kains, N., Snodgrass, C., Steele, I. A., Alsubai, K. A., Andersen, J. M., Novati, S. Calchi, Damerdji, Y., Diehl, C., Elyiv, A., Giannini, E., Hardis, S., Harpsøe, K., Hinse, T. C., Juncher, D., Kerins, E., Korhonen, H., Liebig, C., Mancini, L., Mathiasen, M., Penny, M. T., Rabus, M., Rahvar, S., Scarpetta, G., Skottfelt, J., Southworth, J., Surdej, J., Tregloan-Reed, J., Vilela, C., Wambsganss, J., Skowron, J., Poleski, R., Kozłowski, S., Wyrzykowski, Łukasz, Szymański, M. K., Kubiak, M., Pietrukowicz, P., Pietrzyński, G., Soszyński, I., Ulaczyk, K., Albrow, M. D., Bachelet, E., Barry, R., Batista, V., Bhattacharya, A., Brillant, S., Caldwell, J. A. R., Cassan, A., Cole, A., Corrales, E., Coutures, Ch., Dieters, S., Prester, D. Dominis, Donatowicz, J., Fouqué, P., Greenhill, J., Kane, S. R., Kubas, D., Marquette, J. -B., Menzies, J., P`ere, C., Pollard, K. R., Wouters, D., Christie, G., DePoy, D. L., Dong, S., Drummond, J., Gaudi, B. S., Henderson, C. B., Hwang, K. H., Jung, Y. K., Kavka, A., Koo, J. -R., Lee, C. -U., Maoz, D., Monard, L. A. G., Natusch, T., Ngan, H., Park, H., Pogge, R. W., Porritt, I., Shin, I. -G., Shvartzvald, Y., Tan, T. G., Yee, J. C., Abe, F., Bennett, D. P., Bond, I. A., Botzler, C. S., Freeman, M., Fukui, A., Fukunaga, D., Itow, Y., Koshimoto, N., Ling, C. H., Masuda, K., Matsubara, Y., Muraki, Y., Namba, S., Ohnishi, K., Rattenbury, N. J., Saito, To., Sullivan, D. J., Sweatman, W. L., Suzuki, D., Tristram, P. J., Tsurumi, N., Wada, K., Yamai, N., Yonehara, P. C. M. Yock 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 lightcurve, especially the perturbation part, allowed us to

Externí odkaz: http://arxiv.org/abs/1310.2428

Estimating the parameters of globular cluster M 30 (NGC 7099) from time-series photometry

Autor: Kains, N., Bramich, D. M., Ferro, A. Arellano, Jaimes, R. Figuera, Jørgensen, U. G., Giridhar, S., Alsubai, K. A., Andersen, J. M., Bozza, V., Browne, P., Burgdorf, M., Novati, S. Calchi, Damerdji, Y., Diehl, C., Dodds, P., Dominik, M., Elyiv, A., Fang, X. -S., Giannini, E., Gu, S. -H., Hardis, S., Harpsøe, K., Hinse, T. C., Hornstrup, A., Hundertmark, M., Jessen-Hansen, J., Juncher, D., Kerins, E., Kjeldsen, H., Korhonen, H., Liebig, C., Lund, M. N., Lundkvist, M., Mancini, L., Martin, R., Mathiasen, M., Penny, M. T., Rabus, M., Rahvar, S., Ricci, D., Sahu, K., Scarpetta, G., Skottfelt, J., Snodgrass, C., Southworth, J., Surdej, J., Tregloan-Reed, J., Vilela, C., Wertz, O., Williams, A.

Publikováno v: A&A 588, C2 (2016)

We present the analysis of 26 nights of V and I time-series observations from 2011 and 2012 of the globular cluster M 30 (NGC 7099). We used our data to search for variable stars in this cluster and refine the periods of known variables; we then used

Externí odkaz: http://arxiv.org/abs/1305.3606