Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Peter Rovithis"'
Autor:
Helen Rovithis-Livaniou, Sotirios Tsantilas, Peter Rovithis, DrahomÍr Chochol, AugustÍn Skopal, Theodor Pribulla
Publikováno v:
Astrophysics and Space Science. 296:101-104
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::706d4e5f8f7eb0aeecfa5dba1866367e
https://doi.org/10.1007/s10509-005-4388-0
https://doi.org/10.1007/s10509-005-4388-0
Autor:
A. Gamarova, A. V. Kusakin, P. van Cauteren, Young Woon Kang, E. Rodriguez, E. C. Olson, E. Rovithis-Livaniou, Patricia Lampens, R. R. Shobbrook, David Mkrtichian, Seung-Lee Kim, Peter Rovithis
Publikováno v:
Astrophysics and Space Science. 304:169-171
We present a status report on the search for pulsations in primary componants of Algols systems (oEA stars). Analysis of 21 systems with A0-F2 spectral type primaries revealed pulsations in two systems suggesting that of the order of ten persent of A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a098a84bdf43279f012a88d8125291e2
https://doi.org/10.1007/s10509-006-9101-4
https://doi.org/10.1007/s10509-006-9101-4
Publikováno v:
Astrophysics and Space Science. 189:237-262
The evolutionary status of a sample of 31 W UMa-type systems (20 of W, 9 of A, and 2 of A/W sub-class) is examined and discussed on the basis of their positions in the H-R, mass-radius and mass-luminosity diagrams. The absolute elements of these syst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49ef376143c7b30b23f4642e6039a0da
https://doi.org/10.1007/bf00643128
https://doi.org/10.1007/bf00643128
Autor:
Peter Rovithis, Theodor Pribulla, Augustin Skopal, H. Rovithis-Livaniou, S. Tsantilas, Drahomir Chochol
Publikováno v:
Zdeněk Kopal’s Binary Star Legacy ISBN: 1402031319
The orbital period variations of the eclipsing binary BX And are examined analysing its (O-C) diagram 1) with the standard method, in which the minima times are fitted by the quadratic ephemeris combined with an assumed light-time effect, and 2) with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46186459a080f2e840b2304465066701
https://doi.org/10.1007/1-4020-3875-5_9
https://doi.org/10.1007/1-4020-3875-5_9
Autor:
Peter Rovithis, H. Rovithis-Livaniou
Publikováno v:
Astrophysics and Space Science. 82:229-240
In this paper the twoB andV light curves of the close eclipsing binaryBV Draconis, obtained with the 48-in reflector of the National Observatory of Athens, are represented and discussed. Also, new period of the system is given.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35bca2f91224c1e0eba07f9392b25734
https://doi.org/10.1007/bf00651479
https://doi.org/10.1007/bf00651479
Autor:
H. Rovithis-Livaniou, Peter Rovithis
Publikováno v:
Astrophysics and Space Science. 76:351-362
In this paper theU, B, V, R light curves of the eclipsing variable 44i Boo, obtained during 1978, are represented and discussed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4aa95d49b29fba99efe3b843cbdd8580
https://doi.org/10.1007/bf00687499
https://doi.org/10.1007/bf00687499
Autor:
H. Rovithis-Livaniou, Peter Rovithis
Publikováno v:
Astrophysics and Space Science. 97:337-351
In this paper theB- andV-light curves of the eclipsing binary BW Draconis made at Kryonerion Station of the National Observatory of Athens during 1980 and 1981 are presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd07133707869f1d65c57ccc7c3954a3
https://doi.org/10.1007/bf00653490
https://doi.org/10.1007/bf00653490
Autor:
Peter Rovithis
Publikováno v:
Astrophysics and Space Science. 88:5-13
The sidereal daily rotation of the Sun, ζ(φ), depends on the data used. From an appropriate selection of the data — sunspots with regular motion — it is found that ζ(φ)=14.31–2.70 sin2 φ, where φ denotes the heliographic latitude. Moreove
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59eedfe51dd3d1ac970d1bb588ce9532
https://doi.org/10.1007/bf00648985
https://doi.org/10.1007/bf00648985
Autor:
Peter Rovithis, John Meaburn
Publikováno v:
Astrophysics and Space Science. 46:L7-L10
A faint filamentary structure on a Southern Schmidt plate is thought to be a supernova remnant.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd73331dc45c98ac4dbc19efee06da68
https://doi.org/10.1007/bf00644394
https://doi.org/10.1007/bf00644394
Autor:
Peter Rovithis
Publikováno v:
Icarus. 20:507-510
New measurements of the Venus diameter in four wavelengths are presented. These measurements refer to phase angles between 92° and 145° completing those by other observers. No dependence on the wavelength of the diameter of the planet is found. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8a7bb52c7cace296abd6b21825ed1d5
https://doi.org/10.1016/0019-1035(73)90024-9
https://doi.org/10.1016/0019-1035(73)90024-9