Zobrazeno 1 - 10
of 37
pro vyhledávání: '"L. S. Kudashkina"'
Autor:
L. S. Kudashkina
Publikováno v:
Odessa Astronomical Publications, Vol 33, Iss 0, Pp 34-39 (2020)
For the group of pulsating variable stars with multi-component variability – which are currently classified as the RV Tau-type stars – the classification based on complexity of the periodograms is discussed. Per- iodograms were computed using the
Externí odkaz:
https://doaj.org/article/14cc97e4be8f434d85332b494a5937cf
Autor:
L. S. Kudashkina, I. L. Andronov
Publikováno v:
Odessa Astronomical Publications, Vol 30, Iss 0, Pp 93-97 (2017)
Using the phase plane diagrams, the phase light curves of a group of the Mira-type stars and semi-regular variables are analyzed. As generalized coordinates х and ẋ, we have used m – the brightness of the star and its phase derivative. We have u
Externí odkaz:
https://doaj.org/article/f1d5c9bbc9354d8b83c9cfb59f5e6d4e
Autor:
L. S. Kudashkina, I. L. Andronov
Publikováno v:
Odessa Astronomical Publications, Vol 9, Iss 0, Pp 108-111 (2017)
For 62 Mira-type stars the values of periods have been redetermined; the mean curves have been fitted by a trigonometric polynomial with an optimal number of harmonics; a number of the parameters of the light curve have been calculated (amplitude of
Externí odkaz:
https://doaj.org/article/1bb109d5ab2b4b6d8b27958055ae766e
Autor:
L. S. Kudashkina, G. M. Rudnitskij
Publikováno v:
Odessa Astronomical Publications, Vol 7, Iss 1, Pp 66-69 (2017)
The shapes of light curves of Mira-type variable stars is analyzed. It is shown that some features of the light curves may be explained by passage of shock waves in the stars' atmospheres. In particular, it is noted that "steps" of the ascending bran
Externí odkaz:
https://doaj.org/article/8ae0a855b2304649bf3ef74e9493097b
Autor:
Yu. S. Efimov, L. S. Kudashkina
Publikováno v:
Odessa Astronomical Publications, Vol 14, Iss 0, Pp 134-139 (2017)
The variations of the polarization parameters of three Mira-type stars V CrB, S CrB, T Her in the UBVRI bands are presented.
Externí odkaz:
https://doaj.org/article/94787151cc27409394f9b9f08d7061d8
Autor:
L. S. Kudashkina
Publikováno v:
Odessa Astronomical Publications, Vol 29, Iss 0, Pp 78-81 (2016)
. For nine Mira-type stars (o Cet, R Leo, S Car, U Her, X Oph, R Aql, RR Aql, S Ori, S Scl,) and one semi-regular star (L2 Pup), the mean light curves have been obtained. The initial values of the brightness (observations) were fitted by a trigonomet
Externí odkaz:
https://doaj.org/article/6fa60c03bf914743b700dd164135ed9b
Autor:
I. L. Andronov, L. L. Chinarova, V. F. Gopka, E. V. Menchenkova (Luthardt), M. I. Myalkovskij, M. P. Kosmykina (Yasinskaya), L. S. Kudashkina, A. V. Yushchenko
Publikováno v:
Odessa Astronomical Publications, Vol 9, Iss 0 (2017)
The work of the Odessa Correspondence Courses is briefly described.
Externí odkaz:
https://doaj.org/article/c12e4512fb724eb6b9d03a8ac835eb3e
Publikováno v:
Odessa Astronomical Publications, Vol 14, Iss 0, Pp 116-117 (2017)
Two faint Mira-type stars were investigated on the Moscow and Odessa plates collections. The new ephemerids are Tmax = 2426875 + 274d.8 · E for AP Cyg and 2442162+568d · E for UX Cyg. For UX Cyg, the multiharmonic variability was detected. Two star
Externí odkaz:
https://doaj.org/article/4d2461f70dab495e98791a5b423c6d29
Publikováno v:
Odessa Astronomical Publications, Vol 14, Iss 0, Pp 162-163 (2017)
Periodogram analysis of the photographic observations of UV Boo based on Hipparcos data has showed two photometric periods: 596 d ± 47 d and 11.d74 ± 0.d01 and the same high peak on the value 10d.60 ± 0.d02. On Odessa plates data have showed three
Externí odkaz:
https://doaj.org/article/25030bb30c754db597cd7b7c5bbe6e89
Autor:
L. S. Kudashkina
Publikováno v:
Odessa Astronomical Publications, Vol 25, Iss 1, Pp 18-20 (2012)
The modern review of the stars which are located at the position of asymptotic giant branch at the HRdiagram is presented. The most interesting problems connected to these objects are noted, as well as attention is paid to classification and to the e
Externí odkaz:
https://doaj.org/article/4e72b69a996b4d468121808a0f27c551