DOI: https://doi.org/10.18524/1810-4215.2013.26.81776

COMPILATION OF MOMENTS OF SPIN MAXIMA OF THE INTERMEDIATE POLAR EX HYA

V. V. Breus, I. L. Andronov

Анотація


We present a compilation of the spin maxima of the intermediate polar EX Hya determined using the same methods for our own observations from the Tzec Maun observatory, published observations from the SuperWASP, ASAS and AAVSO databases. For completeness, published data published by other authors are used. We obtained the ephemeris of the spin maxima Tmax=2437699.89079(59) +0.0465464808(69)E-6.3(2)10-13 E2, which corresponds to the characteristic time of acceleration of rotation (spin-up) of 4.67(14) 106 years.

 

 


Ключові слова


Stars: binaries; close; stars: novae; cataclysmic variables; individual (EX Hya)

Повний текст:

PDF

Посилання


Andronov I. L.:1987, Ap&SS, 131, 557

Andronov I.L., Baklanov A.V.: 2004, Astronomy School Reports, 5, 264, http://uavso.pochta.ru/mcv

Andronov I.L. et al.: 2010., Odessa Astron. Publ., 23, 8

Bond I.A., Bond I.A., Freeth R.V., 1988, MNRAS, 232, 753

Breus V.V. et. al.: 2012, Częstochowski Kalendarz Astronomiczny 2013, 153, 2012arXiv1212.6712B

Gilliland R. L.: 1982, Astrophysical Journal, 258, 576

Hellier C.: 2001, Cataclysmic Variable Stars. How and why they vary? Springer. 210 pp.

Hellier C.; Sproats L.N.: 1992, IBVS, 3724, 1

Hill K.M., Watson R.D.: 1984, Astronomical Society of Australia, Proceedings, 5, 4, 532

Jablonski F., Busko I.C.: 1985, MNRAS, 214, 219

Mauche, C. W.; Brickhouse, N. S.; Hoogerwerf, R.; Luna, G. J. M.; Mukai, K.; Sterken, C.: 2009, IBVS, 5876, 1

Norton A.J., Wynn G.A., Somerscales R.V.: 2004, Astrophys.J., 614, 349.

Sterken C., Vogt N., Freeth R., Kennedy H.D., Page A.A.,

Marino B.F., Walker W.S.G., 1983, Astronomy and Astrophysics, 118, 325

Vavilova I.B. et al.: 2012, Kinem.Phys.Cel.Bodies, 28, 8

Vogt N., Krzeminski W., Sterken C.: 1980, Astronomy and Astrophysics, 85, 106

Warner B.: 1995, Cataclysmic Variables Stars, Cambridge

University Press, 562pp.

Andronov I.L, Breus V.V.: 2013, Astrophysics, 56, 518.




Copyright (c) 2016 Odessa Astronomical Publications

Creative Commons License
Ця робота ліцензована Creative Commons Attribution-NonCommercial 4.0 International License.