Zobrazeno 1 - 10
of 19
pro vyhledávání: '"F. Rufener"'
Autor:
F Rufener, R. Polfliet, C. Waelkens, J. Cuypers, D. Heynderickx, K. Degryse, K. Van Den Abeele, Patricia Lampens, Stefaan Poedts, Paul Smeyers, J. Denoyelle
Publikováno v:
Astrophysics and Space Science. 169:109-111
Precise photometric observations of stars in the double cluster h and Ξ Persei reveal a large spread in the colours and magnitudes of the upper Main-Sequence; half of the stars are variables that are Be stars or related stars. The reported age diffe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55f689ec1ddd50cd47d776b7de9f347a
https://doi.org/10.1007/bf00640694
https://doi.org/10.1007/bf00640694
Autor:
F. Rufener
Publikováno v:
Symposium - International Astronomical Union. 111:253-269
In this review an examination will be made of the experimental conditions which must be satisfied by multicolor photometric systems if the observational parameters are to be correlated unequivocally with physical quantities of the star. An inventory
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9edc8cefdb5f63d35ec95cf2f07eb12f
https://doi.org/10.1017/s0074180900078888
https://doi.org/10.1017/s0074180900078888
Autor:
F. Rufener
Publikováno v:
Highlights of Astronomy. 7:813-817
Synthetic photometry must be used to accurately define the passbands which characterize a photometric system. On the one hand, the colour indices of the stars must be coherent with their absolute spectrophotometry; on the other hand, direct compariso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b9387caca1010d924577fffd5e37cb9
https://doi.org/10.1017/s1539299600007334
https://doi.org/10.1017/s1539299600007334
Autor:
F. Rufener
Publikováno v:
Highlights of Astronomy. 8:616-621
An object of this meeting is to define and emphasize the best practices that allow stellar photometry done with array detectors to be as accurate as possible. We dream of applying simple and clearly justified principles; in reality, we find the equip
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21aefacae96fa95f5662886e2ae26ea0
https://doi.org/10.1017/s1539299600008558
https://doi.org/10.1017/s1539299600008558
Autor:
G. V. Coyne, A. R. Hyland, A. Feinstein, K. Osawa, M. Golay, V. Straizys, M. F. McCarthy, A. Behr, W. Schoneich, T. Markkanen, F. Rufener, P. W. Hill, J. Tinbergen, J. A. Graham
Publikováno v:
Transactions of the International Astronomical Union. 16:95-107
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95d500e22409e455f24a13a25a2a352d
https://doi.org/10.1017/s0251107x00000079
https://doi.org/10.1017/s0251107x00000079
Publikováno v:
Transactions of the International Astronomical Union. 20:223-231
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b004f7bb8b295973ec1eefef0e94aa41
https://doi.org/10.1017/s0251107x00027449
https://doi.org/10.1017/s0251107x00027449
Publikováno v:
International Astronomical Union Colloquium. 92:505-508
The double cluster h and χ Persei has since long been known to be rich in Be stars (Trumpler, 1926). It belongs to an age group in which various types of variable stars occur (Mermilliod, 1981). Other clusters of this age group are NGC 3293, the clu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fde209998a9df9434a473b94f559876e
https://doi.org/10.1017/s0252921100116690
https://doi.org/10.1017/s0252921100116690
Autor:
F. Rufener, A. Maeder
Publikováno v:
Symposium - International Astronomical Union. 54:156-162
A comparison of the theoretical and observed indices has been made for the UBV, u v b y and the Geneva's UBVB1B2V1G systems. In the actual state of the photometric calibrations, coincidence between theoretical and observed indices better than are pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f15a4ee235a191b25a49a4cc7b7ed72
https://doi.org/10.1017/s0074180900055236
https://doi.org/10.1017/s0074180900055236
Autor:
F. Rufener, A. Maeder
Publikováno v:
Symposium - International Astronomical Union. 54:298-301
V photoelectric magnitudes are determined on an independent basis. Correlation with V sequence of the UBV system confirms the coincidence of the two definitions. Comparisons with the Catalogue of Bright Stars revealed that more than 40% of BS stars h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87ba38458af6be54b5bfdb521f72b272
https://doi.org/10.1017/s0074180900055315
https://doi.org/10.1017/s0074180900055315
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