47. An Investigation of six contact binary systems and a semi-detached one
Martignoni, Massimiliano ; Popov, Velimir ; Barani, Carlo ; Acerbi, Francesco
2024NewA..11002228M
2024/08
46. Photometric study and absolute parameters of four short period W UMa binary stars of late spectral classes
Acerbi, Francesco; Barani, Carlo; Popov, Velimir
2022NewA...9701873A
2022/11
45. Absolute parameters of four W UMa stars with extreme low mass ratios
Popov, Velimir A.; Petrov, Nikola I.
2022NewA...9701862P
2022/11
44. Photometric Analysis of Two K Spectral Type Contact Binary Systems
Barani, C. ; Martignoni, M. ; Michel, R. ; Acerbi, F. ; Aceves, H. ; Popov, V.
2022RMxAA..58..237B
2022/10
43. First Light Curve Analysis of the Moderate Fill-Out Contact Binary Systems TYC 2402-643-1, TYC 2703-1235-1 and TYC 2913-2145-1
Barani, C. ; Acerbi, F. ; Popov, V.
2022RMxAA..58...73B
2022/04
42. Absolute parameters of the three totally-eclipsing WUMa stars NSVS 2443858, NSVS 780649 and V1098 Her
Popov, Velimir ; Acerbi, Francesco ; Barani, Carlo
22021RAA....21..225P
2021/11
41. Absolute parameters of the W UMa binaries CSS J223614+311343, V523 Aur and V783 And
Kjurkchieva, Diana; Michel, Raul; Zhao, Shijie; Ayala-Loera, Carmen; Bermudez-Bustamante, Luis C.; Popov, Velimir A.
2021NewA...8401401K
2021/04
40. New observations and transit solutions of the inflated exoplanets HAT-P-40b and HAT-P-51b
Kjurkchieva, Diana P. ; Petrov, Nikola I. ; Popov, Velimir A.
2021RAA....21...44K
2021/03
39. Global parameters of the W UMa stars FI Lyn, UV Lyn, and NSVS 781878
Kjurkchieva, Diana P.; Popov, Velimir A.; Marchev, Dragomir V.; Stateva, Ivanka K.
2020AN....341..453K
2020/05
38. Global parameters of the totally-eclipsing W UMa stars NSVS 6673994, NSVS 4316778, PP Lac and NSVS 1926064
Kjurkchieva, Diana P.; Popov, Velimir A.; Petrov, Nikola I.
2020NewA...7701352K
2020/05
37. The 40 cm remote-controlled telescope Meade LX200ACF of the Shumen Astronomical Observatory
Kjurkchieva, D.; Marchev, D.; Borisov, B.; Ibryamov, S.; Dimitrov, D.; Popov, V.; Milev, Al.; Petrov, N.
2020BlgAJ..32..113K
2020/02
36. White-light solar corona and atmospheric conditions registered during total solar eclipses
Tsvetkov, Tsvetan; Miteva, Rositsa; Ivanov, Emil; Popov, Velimir; Nakeva, Yoana; Bojevski, Ljube; Damm, Tobias; Petrov, Nikola
2019spes.conf...52T
2019/12
35. Global Parameters of 12 Totally Eclipsing W UMa Stars
Kjurkchieva, Diana P.; Popov, Velimir A.; Petrov, Nikola I.
2019AJ....158..186K
2019/11
34. Research on Active Solar Processes During 2019 July 2 Total Solar Eclipse
Tsvetkov, Ts.; Petrov, N.; Miteva, R.; Ivanov, E.; Popov, V.
2019simi.conf...56T
2019/09
33. First observations with the 25 cm telescope of the Shumen Astronomical Observatory
Kjurkchieva, Diana; Ibryamov, Sunay; Borisov, Borislav; Marchev, Dragomir; Popov, Velimir; Dimitrov, Dinko
2019BlgAJ..31...30K
2019/07
32. Eclipse timing variation of candidate long-period triple systems
Kurtenkov, A.; Popov, V. A.
2019CoSka..49..390K
2019/05
31. The PDS 110 observing campaign - photometric and spectroscopic observations reveal eclipses are aperiodic
Osborn, H. P.; Kenworthy, M.; Rodriguez, J. E... Popov, V. and 70 more
2019MNRAS.485.1614O
2019/05
30. PY Boo and NSVS 7328383: Two totally-eclipsing W UMa stars with small mass ratios and close parameters
Kjurkchieva, Diana P.; Popov, Velimir A.; Petrov, Nikola I.
2019NewA...68...20K
2019/04
29. The Rise and Fall of the King: The Correlation between FO Aquarii's Low States and the White Dwarf's Spindown
Littlefield, Colin; Garnavich, Peter; Kennedy, Mark R. ... Popov, Velimir and 44 more
2019arXiv190411505L
2019/04
28. Photometric and Spectral Observations of the W UMa Stars NSVS 4161544 and 1SWASP J034501.24+493659.9. GAIA Challenges
Kjurkchieva, Diana; Stateva, Ivanka; Popov, Velimir A.; Marchev, D.
2019AJ....157...73K
2019/02
27. The W UMa binaries USNO-A2.0 1350-17365531, V471 Cas, V479 Lac and V560 Lac: light curve solutions and global parameters based on Gaia distances
Kjurkchieva, Diana P.; Popov, Velimir A.; Eneva, Yordanka; Petrov, Nikola I.
2019RAA....19...14K
2019/01
26. NSVS 2569022: a peculiar binary among W UMa stars with extremely small mass ratios
Kjurkchieva, Diana P.; Popov, Velimir A.; Petrov, Nikola I.
2018RAA....18..129K
2018/10
25. Observations and light curve solutions of three W UMa stars with periods of a quarter of a day
Kjurkchieva, Diana P.; Michel, Raul; Popov, Velimir A.
2018NewA...64...40K
2018/10
24. USNO-B1.0 1452-0049820 and ASAS J102556+2049.3: Two W UMa Binaries Close to the Lower Mass-ratio Limit
Kjurkchieva, Diana P.; Popov, Velimir A.; Petrov, Nikola I.
2018AJ....156...77K
2018/08
23. A Study of the Hα Variability of Be Stars
Dimitrov, Dinko P.; Kjurkchieva, Diana P.; Ivanov, Emil I.
2018AJ....156...61D
2018/08
22. Observations and light curve solutions of a selection of shallow-contact W UMa binaries
Kjurkchieva, Diana P.; Popov, Velimir A.; Vasileva, Doroteya L.; Petrov, Nikola I.
2018NewA...62...46K
2018/07
21. Observations and light curve solutions of three ultrashort-period W UMa binaries
Kjurkchieva, Diana P.; Michel, Raul; Popov, Velimir A.; Deras, Dan
2018NewA...62...41K
2018/07
20. Photometric and spectral observations of two W UMa stars with periods of one third of a day
Kjurkchieva, D. P.; Marchev, D. V.; Popov, V. A.
2018AN....339..472K
2018/07
19. Observations and Light Curve Solutions of the Eclipsing Binaries KR Lyn, CSS J110212+244412, NSVS 4917488 and NSVS 7336024
Kjurkchieva, D.; Popov, V. A.; Eneva, J.; Petrov, N.
2018SerAJ.196...21K
2018/06
18. New observations and transit solutions of the exoplanets HAT-P-53b and XO-5b
Kjurkchieva, Diana; Petrov, Nikola; Ibryamov, Sunay; Nikolov, Grigor; Popov, Velimir
2018SerAJ.196...15K
2018/06
17. Observations and light curve solutions of a selection of middle-contact W UMa binaries
Kjurkchieva, Diana Petrova; Popov, Velimir Angelov; Lyubenova Vasileva, Doroteya; Petrov, Nikola Ivanov
2018RAA....18...46K
2018/04
16. Observations and Modeling of the Transiting Exoplanets XO-2b, HAT-P-18b, and WASP-80b
Kjurkchieva, Diana P.; Popov, Velimir A.; Petrov, Nikola I.
2017SerAJ.195...41K
2017/12
15. Observations and light curve solutions of six deep-contact W UMa binaries
Kjurkchieva, D. P.; Popov, V. A.; Vasileva, D. L.; Petrov, N. I.
2017RMxAA..53..235K
2017/10
14. Intra-night variability of the blazar CTA 102 during its 2012 and 2016 giant outbursts
Bachev, R.; Popov, V.; Strigachev, A.; Semkov, E.; Ibryamov, S.; Spassov, B.; Latev, G.; Muñoz Dimitrova, R. V.; Boeva, S.
2017MNRAS.471.2216B
2017/10
13. V2551 Cyg: a pulsating star with enigmatic peculiarities
Kjurkchieva, Diana P.; Popov, Velimir A.; Marchev, Dragomir V.; Menzies, Kenneth T.; Petrov, Nikola I.
2017RAA....17...69K
2017/07
12. Observations and light curve solutions of the eclipsing stars CSS J075205.6+381909 and NSVS 691550
Kjurkchieva, D.; Popov, V.; Vasileva, D.; Eneva, Y.; Ibryamov, S.
2017BlgAJ..27...83K
2017/07
11. Discovery of optical flickering from the symbiotic star EF Aquilae
Zamanov, R. K.; Boeva, S.; Nikolov, Y. M.; Petrov, B.; Bachev, R.; Latev, G. Y.; Popov, V. A.; Stoyanov, K. A.; Bode, M. F.; Martí, J.; Tomov, T.; Antonova, A.
2017AN....338..680Z
2017/07
10. Observations and light curve solutions of the eclipsing W UMa binaries CSS J071813.2+505000, NSVS 2459652, NSVS 7178717 and NSVS 7377875
Kjurkchieva, D. P.; Popov, V. A.; Vasileva, D. L.; Petrov, N. I.
2017RMxAA..53..133K
2017/04
9. Observations and light curve solutions of the W UMa binaries V796 Cep, V797 Cep, CSS J015341.9+381641 and NSVS 3853195
Kjurkchieva, Diana Petrova; Popov, Velimir Angelov; Ibryamov, Sunay Ibryamov; Vasileva, Doroteya Lyubenova; Petrov, Nikola Ivanov
2017RAA....17...42K
2017/04
8. The newly discovered eclipsing cataclysmic star 2MASS J16211735 + 4412541 and its peculiarity
Kjurkchieva, Diana P.; Popov, Velimir A.; Vasileva, Doroteya L.; Petrov, Nikola I.
2017NewA...52....8K
2017/04
7. Observations and Light Curve Solutions of the Eclipsing Binaries USNO-B1.0 1395-0370184 and USNO-B1.0 1395-0370731
Kjurkchieva, D.; Popov, V. A.; Vasileva, D.; Petrov, N.
2016SerAJ.193...27K
2016/12
6. Return of the King: Time-series Photometry of FO Aquarii’s Initial Recovery from its Unprecedented 2016 Low State
Littlefield, Colin; Garnavich, Peter; Kennedy, Mark R.; ... Popov, Velimir and 27 more
2016ApJ...833...93L
2016/12
5. Intra-night optical activity of the blazar CTA 102 during its maximum state
Popov, Velimir; Bachev, Rumen
2016ATel.9776....1P
2016/11
4. Photometric observations and light curve solutions of the W UMa stars NSVS 2244206, NSVS 908513, CSS J004004.7+385531 and VSX J062624.4+570907
Kjurkchieva, Diana Petrova; Popov, Velimir Angelov; Vasileva, Doroteya Lyubenova; Petrov, Nikola Ivanov
2016RAA....16..135K
2016/09
3. Observations and Light Curve Solutions of Four Ultrashort-Period Binaries
Kjurkchieva, D.; Popov, V.; Vasileva, D.; Petrov, N.
2016SerAJ.192...21K
2016/06
2. Light curve solutions of six short-period binaries and peculiarities of two of them, NSVS 3640326 and V1007 Cas
Kjurkchieva, D.; Popov, V.; Petrov, N.; Ivanov, E.
2015CoSka..45...28K
2015/04
1. Observations of transits of the southern exoplanets WASP 4b and WASP 46b by using a 40 cm telescope
Kjurkchieva, Diana; Petrov, Nikola; Popov, Velimir; Ivanov, Emil
2015BlgAJ..22...21K
2015/01
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