Zobrazeno 1 - 10
of 17
pro vyhledávání: '"I. V. Petrovskaya"'
Publikováno v:
International Astronomical Union Colloquium. 174:399-402
In some external edge-on spiral galaxies, such as NGC 891, 4244, 4565 and 5907, the observed light distribution exhibits a sharp truncation in the outer parts (e.g., Casertano 1983, hereafter C83). As a rule, such galaxies are known to be warped in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7cd13d941f352b513b164620bd884ce2
https://doi.org/10.1017/s0252921100055366
https://doi.org/10.1017/s0252921100055366
Autor:
I. V. Petrovskaya
Publikováno v:
Earth, Moon and Planets. 72:31-34
The probability of variation of the integrals of the orbit as a result of an encounter was found for a two dimensional system. A method of solution of the Kolmogorov-Feller's equation is obtained using this probability function as a kernel, and it al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c729cb476b268998b87b55c6b901c78
https://doi.org/10.1007/bf00117499
https://doi.org/10.1007/bf00117499
Autor:
I. V. Petrovskaya
Publikováno v:
Ergodic Concepts in Stellar Dynamics ISBN: 354057929X
The scheme of a purely discontinuous random process was applied to the investigation of irregular forces effects (Petrovskaya 1969a). Earlier, Henon (1960) showed that there are some features which could be described only by such a scheme. Later, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60b3f9ff6b7ad544c815b5ac3b50fcff
https://doi.org/10.1007/bfb0058113
https://doi.org/10.1007/bfb0058113
Autor:
I. I. Nikiforov, I. V. Petrovskaya
Publikováno v:
Astronomical & Astrophysical Transactions. 7:131-133
The distance to the Galactic center R 0 = 7.5 ± 1.0 kpc is derived by comparing the rotations of the neutral hydrogen and HII region/molecular cloud complex subsystems. The rotation curve of the Galaxy θ = θ(R) and the smooth approximations for θ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5cc381cc1d6de5474e844a132925d196
https://doi.org/10.1080/10556799508205404
https://doi.org/10.1080/10556799508205404
Autor:
I. V. Petrovskaya
Publikováno v:
Astronomical & Astrophysical Transactions. 7:197-199
We use an equation obtained from Kolmogorov–Feller's equation with the absorption screen, and describe the time variation of the distribution function of orbit integrals in a stellar disk under the effect of stellar encounters. As the simplest case
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c2b0a577c33320fa948ad185b08354e
https://doi.org/10.1080/10556799508205419
https://doi.org/10.1080/10556799508205419
Autor:
I. V. Petrovskaya
Publikováno v:
Symposium - International Astronomical Union. 156:261-263
The velocity distribution for the stars of different masses in the typical open cluster was calculated, the velocity variations having been considered as a purely discontinuous random process. the comparison of calculated and observed mean square vel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f85c4d785973042344235b1041fc277a
https://doi.org/10.1017/s0074180900173310
https://doi.org/10.1017/s0074180900173310
Autor:
I. V. Petrovskaya
Publikováno v:
The Chaotic Universe ISBN: 9789812793621
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3abb88a68e91bde3e65e0b54a3a083d4
https://doi.org/10.1142/9789812793621_0022
https://doi.org/10.1142/9789812793621_0022
Autor:
I. V. Petrovskaya
Publikováno v:
Worlds in Interaction: Small Bodies and Planets of the Solar System ISBN: 9789401065788
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a365faac9a7038161448c895bf960d8
https://doi.org/10.1007/978-94-009-0209-1_6
https://doi.org/10.1007/978-94-009-0209-1_6
Autor:
I. V. Petrovskaya
Publikováno v:
Developments in Astrometry and Their Impact on Astrophysics and Geodynamics ISBN: 9780792322382
The velocity distribution for the stars of different masses in the typical open cluster was calculated, the velocity variations having been considered as rarely disContinuous random process. the comparison of calculated and observed mean square veloc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd89d42e43df6da806cbd3dcad2b90f9
https://doi.org/10.1007/978-94-011-1711-1_47
https://doi.org/10.1007/978-94-011-1711-1_47
Autor:
S. Ninković, I. V. Petrovskaya
Publikováno v:
Galactic Bulges ISBN: 9780792324256
It is not always clear what the bulge of the Galaxy is: a region close to the centre, a subsystem formed by a distinct population, or a mixture of populations but characterised by its own mass distribution. We consider the bulge of the Milky Way as a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::716cb1b27581ed4d0ef7e82dec71d52c
https://doi.org/10.1007/978-94-011-0922-2_50
https://doi.org/10.1007/978-94-011-0922-2_50