Zobrazeno 1 - 10
of 14
pro vyhledávání: '"R. Gathier"'
Autor:
O. Ooms, Hans Van Der Woerd, Henny J. G. L. M. Lamers, Josip Kleczek, J. Kovalevsky, R. Gathier, T. Jarzebowski, J. P. Swings, K. A. van der Hucht, O. Namba, R. Mewe, D. Lynden-Bell, Jan Kuijpers, M. van der Klis, D. de Hoop, H. Wittenberg, W. Iwanowska, P. S. Thé, J. Schrijver, S. R. Pottasch
Publikováno v:
Space Science Reviews. 37:399-408
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00c646f77c36fff57cc049bf7c23aab9
https://doi.org/10.1007/bf00226367
https://doi.org/10.1007/bf00226367
Publikováno v:
Planetary Nebulae ISBN: 9789027715586
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a32f7ac9d0296ef7952fb268b7a5a4cb
https://doi.org/10.1007/978-94-009-7094-6_48
https://doi.org/10.1007/978-94-009-7094-6_48
Publikováno v:
Planetary Nebulae ISBN: 9780792300038
Our general method for finding planetary nebulae (PN) is to make wide field objective-prism or objective-grating low-dispersion spectra on photographic plates, PN stand up amongst other emission-line objects either as Ha + [N II] 6548–6583 A emitte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d54fdcf102d0ffd44a0d9ccb82b7eca
https://doi.org/10.1007/978-94-009-0865-9_128
https://doi.org/10.1007/978-94-009-0865-9_128
Autor:
S. R. Pottasch, R. Gathier
Publikováno v:
Planetary Nebulae ISBN: 9780792300038
Magnitudes have been measured for 44 faint central stars of planetary nebulae by imaging the star and nebula of a CCD detector. The nebula is suppressed by using a continuum filter. The remaining nebular continuum is then subtracted as background as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1519e606f77d5738da4d43ca87ef35f3
https://doi.org/10.1007/978-94-009-0865-9_107
https://doi.org/10.1007/978-94-009-0865-9_107
Publikováno v:
Astrophysical Journal, 247(1), 173-194. IOP PUBLISHING LTD
Ultraviolet line profiles are fitted with theoretical line profiles in the cases of 25 stars covering a spectral type range from O4 to B1, including all luminosity classes. Ion column densities are compared for the determination of wind ionization, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41fce32fea9611e76941b7eb4402e583
https://research.rug.nl/en/publications/b31a1d34-bc4f-4e79-a280-ff77e57363b9
https://research.rug.nl/en/publications/b31a1d34-bc4f-4e79-a280-ff77e57363b9
Publikováno v:
Planetary Nebulae ISBN: 9789027715586
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb1c6d56950dac3fc5503d8a379aa319
https://doi.org/10.1007/978-94-009-7094-6_94
https://doi.org/10.1007/978-94-009-7094-6_94
Publikováno v:
Planetary Nebulae ISBN: 9789027715586
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa58d4fbcd8f72e4157651b8cbb0f1f4
https://doi.org/10.1007/978-94-009-7094-6_7
https://doi.org/10.1007/978-94-009-7094-6_7
Autor:
R. Gathier, S. R. Pottasch
Publikováno v:
Planetary Nebulae ISBN: 9789027715586
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4dfdf624de86d0fc2fc6a0e889b62494
https://doi.org/10.1007/978-94-009-7094-6_92
https://doi.org/10.1007/978-94-009-7094-6_92
Publikováno v:
Symposium - International Astronomical Union. 103:541-542
HI observations at 21 cm have been made with the Westerbork Synthesis Radio Telescope in the direction of six planetary nebulae located in or near the galactic plane (N 7027, 2440, 6537, 6572, 7026, 7354).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c2057dc725973c12862cc67ec707012
https://doi.org/10.1017/s0074180900094420
https://doi.org/10.1017/s0074180900094420
Publikováno v:
Symposium - International Astronomical Union. 103:59-60
The central star of the planetary nebula NGC 2346 is now well confirmed as a single-lined spectroscopic binary, with P = 16d (Méndez and Niemela 1981, Ap. J., 250, 240). Unexpected photometric variations were recently reported by L. Kohoutek (1982,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fba249d7036d4f49a75c7b3c62ce30a8
https://doi.org/10.1017/s0074180900093554
https://doi.org/10.1017/s0074180900093554