A Search for QPOs in the Blazar OJ287: Preliminary Results from the 2015/2016 Observing Campaign

Autor: S. Zola, M. Valtonen, G. Bhatta, A. Goyal, B. Debski, A. Baran, J. Krzesinski, M. Siwak, S. Ciprini, A. Gopakumar, H. Jermak, K. Nilsson, D. Reichart, K. Matsumoto, K. Sadakane, K. Gazeas, M. Kidger, V. Piirola, F. Alicavus, K. S. Baliyan, A. Berdyugin, D. Boyd, M. Campas Torrent, F. Campos, J. Carrillo Gómez, D. B. Caton, V. Chavushyan, J. Dalessio, D. Dimitrov, M. Drozdz, H. Er, A. Erdem, A. Escartin Pérez, V. Fallah Ramazani, A. V. Filippenko, F. Garcia, F. Gómez Pinilla, M. Gopinathan, J. B. Haislip, J. Harmanen, R. Hudec, G. Hurst, K. M. Ivarsen, M. Jelinek, A. Joshi, M. Kagitani, N. Kaur, W. C. Keel, A. P. LaCluyze, B. C. Lee, E. Lindfors, J. Lozano de Haro, J. P. Moore, M. Mugrauer, R. Naves Nogues, A. W. Neely, R. H. Nelson, W. Ogloza, S. Okano, J. C. Pandey, M. Perri, P. Pihajoki, G. Poyner, J. Provencal, T. Pursimo, A. Raj, R. Reinthal, S. Sadegi, T. Sakanoi, Sameer, J.-L. Salto González, T. Schweyer, F. C. Soldán Alfaro, N. Karaman, E. Sonbas, I. Steele, J. T. Stocke, J. Strobl, L. O. Takalo, T. Tomov, L. Tremosa Espasa, J. R. Valdes, J. Valero Pérez, F. Verrecchia, J. R. Webb, M. Yoneda, M. Zejmo, W. Zheng, J. Telting, J. Saario, T. Reynolds, A. Kvammen, E. Gafton, R. Karjalainen, P. Blay

Publikováno v: Galaxies, Vol 4, Iss 4, p 41 (2016)

We analyse the light curve in the R band of the blazar OJ287, gathered during the 2015/2016 observing season. We did a search for quasi-periodic oscillations (QPOs) using several methods over a wide range of timescales. No statistically significant p

Externí odkaz: https://doaj.org/article/aa4f4b4b35674be9ac64b06137047ad2

A comprehensive investigation of the variable overcontact system EH Cancri

Autor: K. Stȩpień, R. H. Nelson, Kevin B. Alton

Precise multi-color CCD-derived photometric data were obtained from EH Cnc at two sites during 2010, 2014 and 2018 wherein each epoch used a different instrument. This has provided a unique opportunity to investigate parameter uncertainty following R

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a03b315f5275846f1246715bcd45d24
https://doi.org/10.1007/s12036-020-09641-y

CCD photometry, Roche modelling and period analysis of the W UMa eclipsing binary star system AR CrB

Autor: R. H. Nelson, Kevin B. Alton

Publikováno v: Monthly Notices of the Royal Astronomical Society. 479:3197-3205

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9e43bcfca8eb50bc664b0235f34266ab
https://doi.org/10.1093/mnras/sty1693

The Detached Binary TW Coronae Borealis

Autor: R. H. Nelson

Publikováno v: New Astronomy. 85:101497

New radial velocity and photometric data for TW CrB have been obtained, and Roche-based simultaneous analysis of RV and light curve data for the system has been accomplished for the first time, using the 2003 version of the Wilson-Devinney code. Valu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::63741bef40e8f53f174c29e5d1f7317a
https://doi.org/10.1016/j.newast.2020.101497

The late-type detached binary DU Leonis

Autor: R. H. Nelson

Publikováno v: New Astronomy. 83:101463

New radial velocity and photometric data for DU Leonis have been obtained, and Roche-based simultaneous analysis of RV and light curve data for DU Leo has been accomplished for the first time, using the 2003 and 2015 versions of the Wilson-Devinney c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b876059599e3502d898ba640d2ab7b39
https://doi.org/10.1016/j.newast.2020.101463