Zobrazeno 1 - 10
of 88
pro vyhledávání: '"RADEVA, V."'
Autor:
Zamanov, R. K., Kostov, A., Moyseev, M., Petrov, N., Nikolov, Y. M., Latev, G. Y., Marchev, D., Boeva, S., Stoyanov, K. A., Minev, M. S., Marti, J., Radeva, V., Sanchez-Ayaso, E., Bode, M. F., Ilkiewicz, K., Nikolov, G., Luque-Escamilla, P. L., Spassov, B., Borisov, B., Marchev, V. D., Kurtenkov, A.
We report photometric observations of the hidden symbiotic star SU Lyn in the optical bands. In five nights we detect a weak flickering in U band with amplitude of about 0.05 magnitudes. No intranight variations are found in B, V, g' and r' bands. Th
Externí odkaz:
http://arxiv.org/abs/2206.10151
Autor:
Raetz, St., Schmidt, T. O. B., Czesla, S., Klocová, T., Holmes, L., Errmann, R., Kitze, M., Fernández, M., Sota, A., Briceño, C., Hernández, J., Downes, J. J., Dimitrov, D. P., Kjurkchieva, D., Radeva, V., Wu, Z. -Y., Zhou, X., Takahashi, H., Henych, T., Seeliger, M., Mugrauer, M., Adam, Ch., Marka, C., Schmidt, J. G., Hohle, M. M., Ginski, Ch., Pribulla, T., Trepl, L., Moualla, M., Pawellek, N., Gelszinnis, J., Buder, S., Masda, S., Maciejewski, G., Neuhäuser, R.
CVSO 30 is a unique young low-mass system, because, for the first time, a close-in transiting and a wide directly imaged planet candidates are found around a common host star. The inner companion, CVSO 30 b, is the first possible young transiting pla
Externí odkaz:
http://arxiv.org/abs/1605.05091
Autor:
Semkov, E., Ibryamov, S., Peneva, S., Milanov, T., Stoyanov, K., Stateva, I., Kjurkchieva, D., Dimitrov, D., Radeva, V.
Results from UBVRI photometric observations of the pre-main sequence star GM Cep obtained in the period April 2011 - August 2014 are reported in the paper. Presented data are a continuation of our photometric monitoring of the star started in 2008. G
Externí odkaz:
http://arxiv.org/abs/1502.07579
Autor:
Errmann, R., Torres, G., Schmidt, T. O. B., Seeliger, M., Howard, A. W., Maciejewski, G., Neuhäuser, R., Meibom, S., Kellerer, A., Dimitrov, D. P., Dincel, B., Marka, C., Mugrauer, M., Ginski, Ch., Adam, Ch., Raetz, St., Schmidt, J. G., Hohle, M. M., Berndt, A., Kitze, M., Trepl, L., Moualla, M., Eisenbeiß, T., Fiedler, S., Dathe, A., Graefe, Ch., Pawellek, N., Schreyer, K., Kjurkchieva, D. P., Radeva, V. S., Yotov, V., Chen, W. P., Hu, S. C. -L., Wu, Z. -Y., Zhou, X., Pribulla, T., Budaj, J., Vaňko, M., Kundra, E., Hambálek, Ľ., Krushevska, V., Bukowiecki, Ł., Nowak, G., Marschall, L., Terada, H., Tomono, D., Fernandez, M., Sota, A., Takahashi, H., Oasa, Y., Briceño, C., Chini, R., Broeg, C. H.
We report our investigation of the first transiting planet candidate from the YETI project in the young (~4 Myr old) open cluster Trumpler 37. The transit-like signal detected in the lightcurve of the F8V star 2M21385603+5711345 repeats every 1.36489
Externí odkaz:
http://arxiv.org/abs/1403.6020
Autor:
Semkov, E. H., Peneva, S. P., Munari, U., Tsvetkov, M. K., Jurdana-Sepic, R., de Miguel, E., Schwartz, R. D., Dimitrov, D. P., Kjurkchieva, D. P., Radeva, V. S.
We present new results from optical photometric and spectroscopic observations of the eruptive pre-main sequence star V2493 Cyg (HBC 722). The object has continued to undergo significant brightness variations over the past few months and is an ideal
Externí odkaz:
http://arxiv.org/abs/1205.2532
Autor:
Neuhäuser, R., Errmann, R., Berndt, A., Maciejewski, G., Takahashi, H., Chen, W. P., Dimitrov, D. P., Pribulla, T., Nikogossian, E. H., Jensen, E. L. N., Marschall, L., Wu, Z. -Y., Kellerer, A., Walter, F. M., Briceño, C., Chini, R., Fernandez, M., Raetz, St., Torres, G., Latham, D. W., Quinn, S. N., Niedzielski, A., Bukowiecki, Ł., Nowak, G., Tomov, T., Tachihara, K., Hu, S. C. -L., Hung, L. W., Kjurkchieva, D. P., Radeva, V. S., Mihov, B. M., Slavcheva-Mihova, L., Bozhinova, I. N., Budaj, J., Vaňko, M., Kundra, E., Hambálek, Ľ., Krushevska, V., Movsessian, T., Harutyunyan, H., Downes, J. J., Hernandez, J., Hoffmeister, V. H., Cohen, D. H., Abel, I., Ahmad, R., Chapman, S., Eckert, S., Goodman, J., Guerard, A., Kim, H. M., Koontharana, A., Sokol, J., Trinh, J., Wang, Y., Zhou, X., Redmer, R., Kramm, U., Nettelmann, N., Mugrauer, M., Schmidt, J., Moualla, M., Ginski, C., Marka, C., Adam, C., Seeliger, M., Baar, S., Roell, T., Schmidt, T. O. B., Trepl, L., Eisenbeiß, T., Fiedler, S., Tetzlaff, N., Schmidt, E., Hohle, M. M., Kitze, M., Chakrova, N., Gräfe, C., Schreyer, K., Hambaryan, V. V., Broeg, C. H., Koppenhoefer, J., Pandey, A. K.
We present the Young Exoplanet Transit Initiative (YETI), in which we use several 0.2 to 2.6m telescopes around the world to monitor continuously young (< 100 Myr), nearby (< 1 kpc) stellar clusters mainly to detect young transiting planets (and to s
Externí odkaz:
http://arxiv.org/abs/1106.4244
Autor:
Radeva, V.
Publikováno v:
Химия. Природните науки в образованието / Chemistry. Bulgarian Journal of Science Education. 27(3):393-400
Externí odkaz:
https://www.ceeol.com/search/article-detail?id=674943
Autor:
Radeva, V.
Publikováno v:
Химия. Природните науки в образованието / Chemistry. Bulgarian Journal of Science Education. 27(3):334-339
Externí odkaz:
https://www.ceeol.com/search/article-detail?id=674882
Autor:
Radeva, V., Kjurkchieva, Diana
Publikováno v:
Химия. Природните науки в образованието / Chemistry. Bulgarian Journal of Science Education. 26(6):831-844
Externí odkaz:
https://www.ceeol.com/search/article-detail?id=600083
Autor:
Radeva, V.
In the paper are presented the astrometric observations of asteroids made with the Schmidt telescope at NAO-Rozhen. The observations were made in the period 2017 to 2022 by a team of teachers and students from the Vaptsarov Naval Academy. The team's
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c005e3e4a942cb3cf27f1eb7bd9fa020